Novel code combination structure for frame and signal transmission in multicarrier system

FIELD: information technology.

SUBSTANCE: transmitting device comprises: means of generating frames, which is configured to arrange signal and pilot signal data in each of at least two signal code combinations in a frame, each signal code combination having the same length, and arrange data in said at least one code combination in a frame, a conversion means which is configured to convert said signal code combinations and said data code combinations from a frequency domain into a time domain to generate a time-domain transmission signal, and a transmitting means which is configured to transmit said time-domain transmission signal. Method is intended to be implemented by the given device.

EFFECT: enabling flexible tuning to the required portion of the transmission band and reduced content of service data.

20 cl, 15 dwg

 

The present invention is directed to a new structure of the code combination for the transmission of frames and signals in systems with multiple carriers.

The present invention, therefore, focused (but not limited to system broadcast data, such as, for example, a cable system broadcast data or terrestrial digital broadcast data in which the data content, data signals, pilot signals, etc display on multiple carrier frequencies, which are then passed into a given total or full bandwidth. The receiver is typically configured for a partial channels (part of the total bandwidth of the transmission) of the total bandwidth (sometimes referred to as a segmented reception) to only accept data content that are necessary or desirable in the corresponding receiver. For example, in the ISDB-T standard (XCV-N, integrated service digital broadcasting terrestrial transmission) the total channel bandwidth, thus, divided into 13 fixed segments of equal length (equal to the number of carrier frequencies).

The purpose of the present invention is to create a device and a transfer method, and the structure of the signal for a system with many carriers which provide flexible configuration n is any desired portion of the bandwidth of the transmission and which have a low content of official data.

The above aim is achieved by means of the transmission device according to claim 1 of the claims. The transmission device in accordance with the present invention is arranged to transmit signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination, the data referred to the transmission device includes a means forming a frame, made with the possibility of placing data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, each code sequence has the same length, and data placement in the above-mentioned at least one combination data in a frame conversion tool, made with the possibility of conversion referred to code combinations of signals and said code combinations of data from the field frequency in the region of time to generate the signal transfer in the field of time, and means of transmission, made with the possibility of transfer of the aforementioned signal transmission region of time.

The above objective is additionally achieved by using a transfer method of claim 8 claims. The transfer method in accordance with the tvii with the present invention has a capability to transmit signals in a system with multiple carrier based on the structure of the frame, each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination of data, containing the steps: placing data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and place the data in the above-mentioned at least one combination data in a frame, transforming mentioned code combination signals and the above-mentioned combination of data from the field frequency in the region time to generate the signal transfer in the field of time and transmit the said signal transfer in the field of time.

The above-described additional goal is achieved through the combination of a frame for a system with many bearing according to claim 9 of the formula of the invention, containing at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination data in which the data signals and pilot signals are located in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and in which data is arranged in the above, p is at least one code combination data in the frame.

The purpose of the present invention additionally is to create a device and method, and a system and method for transmitting and receiving signals in a system with many bearing, which enables flexible adjustment to any desired part of the bandwidth of the transmission and which has a low content of official data.

The above aim is achieved by means of the pickup device of claim 10 claims. The pickup device in accordance with the present invention has a capability to receive signals in a system with multiple carrier based on the structure of the frame in the bandwidth of the transmission, each frame contains at least two code sequences that are located next to each other in the direction of frequencies, each of which contains data signals and pilot signals, and at least one code combination data, and the data in each of the above-mentioned at least two code combinations of signals are of the same length, the said reception device includes a tool receiving made with the possibility configure it on and taking them to the selected part of the mentioned bandwidth transmission, and referred to the selected part of the above mentioned bandwidth of the transmission is less than the least the length of one of the said code combinations of signals and comprises at least one code combination of data units, and a means of detecting the offset frequency, made with the possibility of detection bias frequency on the basis of the pilot signals contained in the received code combination signals.

The above objective is additionally achieved by using the method according to claim 19 claims. The method in accordance with the present invention is configured to receive signals transmitted in the system with multiple load-bearing structure-based frame, the bandwidth of the transmission, each frame contains at least two code sequences that are located next to each other in the direction of frequencies, each of which contains data signals and pilot signals, and at least one code combination data, each of the said at least two code combinations of signals has the same length containing the following steps:

accept the selected part of the mentioned bandwidth transmission, and referred to the selected part of the above mentioned bandwidth transmission has at least the length of one of the said code combinations of signals and comprises at least one code to the combination of data, intended for reception, and detects the frequency offset on the basis of the pilot signals contained in the received code combination signals.

The above objective is additionally achieved by a system for transmitting and receiving signals according to claim 20, claims containing the transmission device is designed to transmit signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination, the data referred to the transmission device includes a means forming a frame made with the possibility to place the data signals and pilot signals in each of the aforementioned at least two code combinations of signals in the frame, and each code sequence has the same length, and place the data in said at least one code combination of data in the frame conversion tool, made with the possibility of conversion referred to code combinations of signals and said code combinations of data from the field frequency in the region of time to generate the signal transfer in the field of time, and means of transmission, made with the possibility of transfer of the aforementioned signal transmission is related to time, moreover, the system further comprises a pickup device in accordance with the present invention, implemented with the opportunity to take the above-mentioned signal transmission in the time portion of the above-mentioned transmission device.

The above-described additional goal is achieved through a method of transmitting and receiving signals according to item 21 of the claims containing the transmission method, for transmitting signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination data, and the above-mentioned transfer method contains the following steps: place the data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and place the data in the above-mentioned at least one combination data in a frame, transforming mentioned code combination signals and the above-mentioned combination of data from the field frequency in the region of time to generate the signal transfer in the field of time and transmit the said signal transfer in the field of time, and the above-mentioned method further contain what it method in accordance with the present invention, made with the possibility of receiving the above-mentioned signal transmission in the field of time.

Additional preferred properties are defined by dependent claims.

In the present invention, therefore, the proposed system with many bearing, which uses the structure of the frame or code combination of the frame in the area of frequency and time. In the field of frequencies, each frame contains at least two code sequences, which, respectively, contain data signals and pilot signals and, accordingly, have the same length (or bandwidth). After conversion in the area of time in the resulting signal in the area of time each frame then contains one or more symbols of the signal and character data. Each code combination of the frame covers the entire or total bandwidth of the transmission in the direction of frequency so that the total bandwidth of the transmission so equally divided coded combinations of signals having the same respective length. Combination of data in each frame is then followed by coded combinations of signals in time. The pickup device can be freely, flexibly and quickly set to any desired part of the bandwidth of the front and, provided that this part of the bandwidth of the transmission, which can be configured with the pickup device has at least the length of one code combination signals. Thus, the reception device always has the ability to accept data signals throughout the code combination signals so that, based on and using the data signals containing information physical level necessary for reception of the subsequent code combinations of data, combination of data can be taken in the reception device. In addition, since each code combination of signals not only contains the data signals, but also the pilot signals mapped on the carrier frequency, there is no need to provide special preamble or training code combination consisting only of the pilot signals as the pilot signals contained in the code combinations of signals, provide the necessary detection of frequency offset and compensation, and the detection of the start of frame reception device, so that the total amount of overhead is small compared to systems with specialized preambles or training code combinations with pilot signals. The present invention is especially preferred in systems with relatively high relationship with the persecuted-noise, such as, but without limitation, to systems operating on the basis of the cable. Although the receiver can be flexibly adjusted to any desired part of the bandwidth of the transmission, it is always possible to receive data signals of the entire code combination signals for the new structure frame made in accordance with the present invention. In addition, the new structure of the frame enables quick setup of the pickup device on the desired bandwidth of the transmission.

Preferably, the aforementioned pilot signals mapped on the carrier frequency mentioned, at least two code combinations of signals in a frame, form a sequence of the pilot signal. In other words, all of the pilot signals of the frame form a sequence of the pilot signal.

Alternatively, the aforementioned pilot signals in each one of the said at least two coded combinations of signals, preferably, form a sequence of the pilot signal, in which the sequence of pilot signals differ from each other.

Preferably, the aforementioned pilot signals modulate, using a pseudo-random binary sequence.

Preferably, the said means of forming the frame, the said device is made with possibility p is smesheniya mentioned pilot signals, at least two code combinations of signals with different modulation scheme.

Preferably, the said means forming a frame mentioned transmission device is arranged to accommodate the mentioned pilot signals so that the pilot signal display on each m-th carrier frequency mentioned, at least two code combinations of signal conversion tool mentioned transmission device, where m is an integer >1.

Preferably, each of the at least two code combinations of signals includes at least one pilot band, and said pilot signals are arranged in the above-mentioned at least one pilot band.

Preferably, the said means of detecting the frequency offset referred to the pickup device includes a means of correlation, is configured to perform correlation on the pilot signals contained in the received code combination signals. In accordance with a first preferred aspect, the aforementioned pilot signals located in said at least two coded combinations of signals in a frame form a sequence of the pilot signal, in which the above-mentioned sequence of the pilot signal stored in the means of preserving that contains what I mentioned in the pickup device, in which the above-mentioned sequence of the pilot signal is used by the mentioned means of correlation to perform the mentioned correlation. Thus, the above mentioned means of correlation mentioned pickup device, preferably, is arranged to perform said correlation on the basis of the above sequence of the pilot signal stored in the above-mentioned means of preserving, which corresponds to the aforementioned selected parts mentioned bandwidth transmission. Alternatively, a known sequence of pilot signal may be generated in the pickup device in the transmission in the corresponding generating tool. In accordance with a second preferred aspect, the aforementioned pilot signals in each one of the said at least two coded combinations of signals form the sequence of the pilot signal, in which the said means of detecting the frequency offset referred to the pickup device includes a means of calculation performed by the calculation of the above-mentioned sequence of the pilot signal, which are referred to by means of correlation to perform the mentioned correlation.

Preferably, the pilot signal display on each m-th carrier frequency mentioned, at least on the uh code combinations of signals, where m is an integer >1, in which the said means of detecting the frequency offset is configured to detect the frequency offset based on the said pilot signals.

In addition, preferably, each of the said at least two code combinations of signals includes at least one band of the pilot signal containing the mentioned pilot signals in which the said means of detecting the frequency offset referred to the pickup device is configured to detect the frequency offset based on the said pilot signals.

Also, preferably, the said reception device includes a synchronization tool time, is configured to perform time synchronization based on a correlation of the guard interval.

Also, preferably, the above-mentioned pickup device contains an additional means of detecting the frequency offset, configured to perform detection of the fractional frequency offset based on the correlation of the guard interval.

Preferably, the pickup device includes a means of reconstructing made with the possibility to reconstruct the original code combination of signals of the above adopted a selected part of the mentioned bandwidth transmission. Thisway, the mentioned means of reverse engineering can be adapted to change the layout of received signals intended for transmission of signals in the source code combination of signals when the selected part of the above mentioned bandwidth transmission, which is configured tool receiving, does not correspond to the structure of the code combination of signals. Thus, even if the selected bandwidth transmission, tuned, not completely and not correctly corresponds to one of the code combinations of signals (in the direction of the frequency), the receiver in such cases will take the last part (in the direction of the frequency) of the preceding code combination signals and the first part (in the direction of the frequency of the subsequent code combination signals. For example, in the case where the reception device knows its offset (frequency measurement) from the structure of the code combination of signals in each frame, the said means of reverse engineering can be performed with the possibility of changing the layout of received signals intended for transmission of signals in the source code combination signals. Alternatively, each frame contains at least two additional code combination signals, following at least two code combinations of signals in the direction of time and, each of said additional code combinations of signals has a corresponding same length as the corresponding one of the at least the previous two code combinations of signals, in which the said means of reverse engineering is made with the possibility of changing the layout adopted two or more code combinations of signals following each other in the time dimension, in the source code combination signals. Thus, the preceding code combination signals and subsequent code combination of signals may be data signals, even if the length of the coded combinations of signals in the direction of the frequency shorter than in the case when all the necessary data signals contained in a single code combination signals.

Alternatively or in addition, the data signals coded combinations of signals contain the encoding detection and/or correction of errors, in which the said means of reverse engineering, the aforementioned pickup device configured to perform decoding and/or detection error correction on the said received signals intended for transmission of signals to reconstruct the original code combination signals. Thus, the transmitted code combination of signals may contain D. the additional coding errors, redundancy or the like that enables the receiver to reconstruct the original code combination signals, even though there may be adopted only part of the code combination signal. Preferably, each of the code combinations of the signals from each frame contains the location code combination of signals in a frame, which is isolated and evaluated on the receiving side. In this case, further preferably, each code combination of signals in each frame can contain identical data signals, with the exception of the location of the respective coded combinations of signals in a frame, which differ, at least some of the coded combinations of signals in the frame. Thus, the pickup device is arranged to determine its position within the total bandwidth of the transmission (in each frame), for example, during initialization, in which the pickup device set at an arbitrary position in the frame, and then configure the bandwidth that enables reception of desired data on the basis of the data signals in the received code combination signals. Alternatively, location information may be encoded in the pilot signals contained in the code combinations of signals. Preferably, the code is the first combination of signals of each frame contain data signals with multiple code combinations of data contained in the frame in which the said assessment tool mentioned pickup device configured to allocate mentioned data signals with multiple code combinations of data from the received code signals. Also, preferably, combination of the signals of each frame will contain the individual data signals, each code combination is contained in a frame, in which the said assessment tool designed to highlight individual mentioned data signals with each code combination of data from the received code signals.

Preferably, the receiver is configured to configure it to and receiving the selected portion of the mentioned bandwidth transmission in such a way that allows optimized reception code combination of signals in the selected portion of the bandwidth of the transmission. In particular, if the structure of the measurement of the frequency of code combinations of data and code combinations of signals in a frame do not match each other, and if we choose the bandwidth of the transmission, which must be accepted in the receiver, the greater (measuring frequency)than code combination (combination) of the data intended for reception may be possible to optimize the settings so that will be on stahnout the best possible code combination signals, for example, by adjusting the settings so that it will be accepted a maximum of one full code combination signals, while still will be receiving all of the desired code combination (combinations) of data.

Usually, it may be preferable to configure the receiver so that the elected part of the bandwidth of the transmission is adopted so that the at least one code combination of data that will be adopted will be in the center, relative to the elected part of the bandwidth transfer.

In addition, preferably, the receiver can be configured to accept the election of the above bandwidth transfer on the basis of information signals adopted in the code combination of signals of the previous frame.

Also, preferably, each frame contains at least one additional data structure that follows the aforementioned at least one combination of data in the time dimension, each of said additional code combinations of data has the same length as the corresponding one of the mentioned previous, at least one combination data. In other words, the structure of the code combinations (combinations) of data in each frame, preferably installed in such a way Thu the, at least one code combination of data is the measurement of the frequency so that covers the entire bandwidth. At least one additional code combination data is then placed in the same frame, but so it should, at least, after one of the code combinations of the data in the time direction, resulting in each additional or next code combination data has the same length (in measurement or in the direction of the frequency), the previous code combination data in the same position frequency. Thus, if the pickup device will be configured to a certain portion of the bandwidth of the transmission is accepted, at least one code combination of data per frame, with each of the code combinations of the data has the same length, but they follow each other in the time direction. Thus, each of the code combinations of the data in the device transfer length can be adjusted dynamically. Alternatively or in addition, the number of additional code combinations of data in the time direction can be adjusted dynamically. Also, the length of the code combinations of data in one frame in the time direction, i.e. the length of the time intervals can be changed. Thus, it is important that all code combinations of signal in the next frame n is cialis at the same point in time. Any dynamic changes, relative to the code combinations of the data will then be transmitted with signals in coded combinations of signals. System with multiple load-bearing structure of the frame, such as is assumed in the present invention thus provides a very flexible transfer of content data, in which the length of the code combinations of the data and, thus, the amount of data to a code combination of data can be dynamically changed, for example from frame to frame, or in any other appropriate way. Alternatively, the length and/or the number of combinations of data may be fixed or constant.

It should be understood that the present invention can be applied to any type of system with many bearing, in which a transmission device configured to transmit across the entire bandwidth of the transmission and the reception device is configured to selectively accept some mentioned the entire bandwidth of the transmission. Non-restrictive examples of such systems can be an existing or future unidirectional or bidirectional broadcast system data, such as cable or wireless (e.g., on the basis of cable, terrestrial, and so on) digital broadcast video. Neo is radically example with many bearing can be represented by a system of orthogonal multiplexing frequency division multiplexing (OFDM, OMCR), however, you can use any other relevant system in which data and pilot signals, etc. display on multiple carrier frequencies. The carrier frequency, thus, can be located equidistant and, accordingly, have the same length (bandwidth). However, the present invention can also be used in systems with multiple carrier in which the carrier frequency is not equidistantly and/or don't have, respectively, of the same length. However, it should be understood that the present invention is not limited to any specific frequency range or the total bandwidth of the transmission used on the receiving side or the selected portion of the bandwidth of the transmission, which configures the receive side. However, in some embodiments it may be preferred to use a strip of reception on the receiving side, i.e. bandwidth, comprising a portion of the bandwidth of the transmission, which can be configured on the receiver that corresponds to the bandwidth of the devices receiving the existing digital broadcast video or other) systems. Not a restrictive example, the bandwidth of the receiver can be to 7.61 MHz, 8 MHz, or any other appropriate value, that is, the receiving side can be configured on l is the buoy desired bandwidth size to 7.61 MHz or 8 MHz, etc. in the total bandwidth of the transmission. Thus, the total bandwidth may be a multiple number to 7.61 MHz, for example, to 7.61 MHz, 15,22 MHz To 22.83 MHz, 30,44 MHz, 60,88 MHz, 243,52 MHz and so on, so that the segmentation of the total bandwidth of the transmission, i.e. the length of each code combination of signals may be to 7.61 MHz. However, other numbers, ways of segmentation and multiple values are possible, for example (but without limitation), the length of each code combination of signals corresponding to 4 MHz, 6 MHz, 8 MHz, or any other appropriate value.

Usually in the case of not limiting example 8 MHz bandwidth receiver, the length of each code combination of signals used in the structure of a frame in accordance with the present invention, may be 8 MHz, 6 MHz, 4 MHz (or less).

The present invention is illustrated in more detail in the following description of the preferred variants of the embodiment with reference to the attached drawings, in which

figure 1 presents the scheme of the overall bandwidth of the transmission from which the selected part can be selectively and flexibly received by the receiver,

figure 2 presents an example of segmenting the total bandwidth transmission,

figure 3 presents a schematic view in the time structure of a frame in accordance with the present image is taneem,

figure 4 shows a schematic example of the structure of frame, or code combination in accordance with the present invention,

figure 5 shows part of the structure of the frame 4 with an explanation of reverse engineering code combination signals,

figure 6 shows a schematic example of the characteristics of the receiver filter,

7 shows an additional example of the structure of frame code combination in accordance with the present invention,

on Fig shows a portion of an additional example of the structure of frame, or code combination in accordance with the present invention,

figure 9 shows the first example of the placement of the pilot signals by the code combinations of signals,

figure 10 shows the second example of the placement of the pilot signals by the code combinations of signals,

figure 11 shows an additional example of reverse engineering code combination signals,

on Fig shows an example of the adaptation of different bandwidths, channel,

on Fig schematically shows an example structure of a frame in accordance with the present invention in the time dimension,

on Fig schematically shows the block diagram of the example of the transmission device in accordance with the present invention, and

on Fig schematically shows a block diagram of an example of a pickup device in accordance with the present invention.

1 schematically on Asano view of the entire strip 1 transmission transmission in which the transmission device in accordance with the present invention, such as, for example, the device 54 transmission schematically shown in Fig, transmits signals in a system with multiple frequencies in accordance with the present invention. In the medium of cable television, the entire band 1 bandwidth transmission may, for example, called bandwidth, which transmit digital television signals for one or more of the recipient, and may, for example, to have a bandwidth of 64 MHz or any other relevant bandwidth. Band 1 bandwidth transmission, thus, may be part of a larger bandwidth environment in which transmit different types of signals through the corresponding wireless or cable transmission medium. In the example cable television bandwidth environment can go from 0 MHz to 862 MHz (or even higher), and band 1 bandwidth transmission can be a part of it. Figure 1 additionally shows schematically a block diagram of the device 3 to receive in accordance with the present invention, which is performed with the possibility of its settings and selective reception of the selected portion 2 of the strip 1 bandwidth transmission. Thus, the device 3 admission includes a tuner 4, which is made with the possibility of its settings and polling reception desirable part 2 band 1 bandwidth transmission, and additional means 5 processing, which performs additional processing of received signals in accordance with respective data transmission system, such as demodulation, channel decoding, etc. More elaborate example of a pickup device in accordance with the present invention schematically shown in the block diagram on Fig, which presents the device 63 receiving, containing the interface 64 of the technique, which can, for example, be an antenna, a directivity pattern, or cable based on the cable receiving interface or any other suitable interface, configured to receive signals corresponding to the transmission system or in the communication system. The receiving interface device 64 63 receiving connected with the tool 65 of acceptance, which contains the configuration tool, such as tool 4 settings, shown in figure 1, and the additional required items processing, depending on the respective transmission system or communications system, such as a conversion tool with decreasing frequency, made with the possibility of conversion by lowering the frequency of the received signals to an intermediate frequency or baseband bandwidth.

As indicated above, the present invention provides a flexible and changing receiving chelation is at school part 2 bandwidth 1 transmission in the receiver, by providing specific and new structure frame for a system with multiple carriers. Figure 2 shows a schematic view of the entire strip 1 transmission transmission (e.g., 32 MHz, 64 MHz, or any other appropriate number), within which the device 54 of the transmission in accordance with the present invention is configured to transmit content data such as video data, audio data or any other data type in different segments or parts 6, 7, 8, 9 and 10. For example, parts 6, 7, 8, 9 and 10 can be used by the device 54 transmission for transmitting various types of data, data from different sources, data intended for different recipients, etc. of the Parts 6 and 9, for example have a maximum bandwidth, the maximum bandwidth that can be adopted by the relevant device 63 are received (for example, 8 MHz, or to 7.61 MHz or any other appropriate value). Parts 7, 8 and 10 have a smaller bandwidth. In the present invention, it is now proposed to apply the structure or code combination of a frame for the whole band 1 bandwidth transmission, with the result that each frame contains at least two code sequences that are located next to each other in the direction of the frequency and variety of code combinations of data. Each code combination is of ignatow has the same length and contains the data signals, and the pilot signal displayed in her carrier frequencies (frequency subcarriers in a system OMCR). In other words, the total bandwidth 1 bandwidth transmission is divided into equal parts for code combinations of signals, resulting in a maximum bandwidth that can be configured receiver, for example, the bandwidth is shown for parts 6 and 9 in figure 2, must be equal to or greater than the length of each code combination signals. The new frame structure proposed in the present invention, therefore, contains only code combination signals and combination of data, but does not contain any separate training combination or other code combinations that contain pilot signals. In other words, in the present invention proposed a new structure frame with a preamble, which consists of two or more code combinations of signals, and code combinations of data that follow the preamble in the time direction.

It should be noted that the length of different parts of the data in the bandwidth transfer may not exceed the length (the number of carrier frequencies), the maximum bandwidth that can be configured receiver, as explained in more detail below.

Figure 3 shows a schematic representation of the structures of the frames 11, 12 in the area of the tee time in accordance with the present invention. Each frame 11, 12 contains one or more characters 13, 13' signaling and multiple characters 14, 14' of the data. Thus, in the field of time symbols of the transmission signal preceding the data symbols. Each frame 11, 12 can have a lot of data characters, with the possible systems in which the number of data symbols in each frame 11, 12 is changed. The pilot signals contained in the symbols of the transmission of signals used in device 63 admission to perform channel estimation and/or calculation of the integer frequency offset, as well as detecting the start of a frame (can be used to detect the start of frame in the field of time and frequency). The time alignment may, for example, be performed by performing a correlation of the guard interval (or using any other appropriate technology) for protective intervals of the received symbols, signals and/or data symbols in the field of time. Characters 13, 13' signals additionally contain information transmitting signals, such as all the information of the physical layer, which is necessary for the device 63 for decoding received signals, such as, but without limitation, data signals L1. The data signals may, for example, to contain the placement of the content data on the various code combinations of data, that is, for example, what services, data streams,the modulation, installation error correction, etc. posted by what bearing frequencies, so that the device 63 can get information on what part of the entire bandwidth of the transmission it must be configured. It is possible that all code combination of signals in a frame contain identical data signals. Alternatively, each of the code combinations of signals may include data signals representing the displacement or distance of the corresponding code combination of signals from the beginning of the frame so that the device 63 can optimize the setting to the desired part of the transmission frequency so that the reception of the coded combinations of signals and code combinations of data will be optimized. On the other hand, the offset or distance of the corresponding code combinations of signals from the start of the frame can also be encoded with pilot signals in the sequences of pilot signals or protective bands allocated to or contained in the code combinations of signals, so that each code combination of signals in one frame can have identical data signals. The use of the structure of a frame in accordance with the present invention has the additional advantage consists in the fact that as a result of dividing a data stream into logical blocks, you can peredav the b signals of changing the structure of the frame from frame to frame, in the result of the previous frame indicates a modified structure of the frame following the frame or one of the following frames. For example, the frame structure provides a possibility to change without joints modulation parameters, without errors.

Figure 4 schematically shows an example of a view in the field frequency of the structure, frame, or code combinations 29 in accordance with the present invention. Structure 29 of the frame covers the entire band 24 bandwidth transmission in the direction of frequency and contains at least two (or at least one, or at least three) code combination 31 of signals adjacent to each other in the direction of frequencies, each of which carries identical or nearly identical data signals mapped to the appropriate carrier frequency and has the same length. In the example shown in figure 4, the first time interval of the entire bandwidth of 24 transmission is additionally divided into four code combination 31 of the signal, but any other, more or less number of combinations of signals may be appropriate. The device 54 of the transmission in accordance with the present invention, as shown in Fig tool 59 forming a frame configured to accommodate the data signals received from the means 55 modulation), and MPI is the shaft of the signals in the corresponding code combination signals. Data signals in advance modulate using the 55 modulation, using an appropriate modulation scheme such as QAM modulation (QAM, quadrature amplitude modulation), or any other. Preferably, pseudotumour sequence, the sequence CAZAC (CLAN oscillations with constant amplitude and zero autocorrelation), PRBS (PSDP, pseudo-random binary sequence) or the like is used for the pilot signals, but any other sequence with good pseudocumene properties and/or properties of correlation may be appropriate. Each code combination signals, a frame may contain different sequences of pilot signals, but alternatively, the pilot signal code combination of signals of one frame can form a single sequence of the pilot signal. It should be understood that the tool 59 forming a frame can be embodied as a single module, block or the like, or may be embodied in several modules, units, devices, etc. in Addition, it should be understood that the tool 59 forming the frame may not form a complete structure of the frame or code combination 29, as shown in figure 4 (or structure, or code combination 29' of the frame, as shown in Fig.7) at one point of time, but can be made available is the capacity of forming one part of the structure 29 (or 29') of the frame, after the other in the time direction, that is, the time interval after the time interval. For example, the tool 59 forming a frame can be made possible in the beginning to compose code combinations 31 signals, as shown in figure 4, next to each other, and add the pilot signals as described above and below across the width of the strip 24 bandwidth transmission, that is, in the example shown in figure 4: four code combinations 31 signals. Then, this part of the frame 24 (first time interval) can be further processed, for example, by converting it from the field frequency in the region of time in the tool 60 frequency conversion at a time by building the resulting character in the field of time (for example, character OMCR), etc. and Then, in the next step, the tool 59 forming a frame can be made with the possibility of processing a line or sequence of code combinations 32, 33, 34, 35, 36, 37 data, i.e. the next time interval, thus, as will be described below, across the strip 24 of bandwidth transfer, then these code combinations data further treated, for example, by converting them from the field frequency in the region of time, by forming the symbol related to time (e.g., symbol OMCR), etc. Thus, in the view shown in f is, 4, structure 29 of the frame can be formed by using the 59 forming a frame line by line or by time intervals. Each part of the structure 29 of the frame, which continues throughout the strip 24 bandwidth transmission in the direction of frequency, will be formed and will be treated as one unit, but the parts that follow one another in the direction of time (time intervals)will be formed and processed one after another.

The tool 59 forming a frame can be made with the possibility of accommodation mentioned pilot signals so that the pilot signal is mapped onto every m-th carrier 17 frequency (m is a natural number greater than 1) in each code combination signal so that the carrier frequency 16 between the pilot signals carry data signals, as further explained below with reference to Fig.9. In addition, or alternatively, the tool 59 forming a frame can be made with the possibility of composition mentioned pilot signals such that pilot signals display on carrier frequencies 20, 21, at least one of the strips 18, 19 of the pilot signals contained in the code combinations of signals, as further explained below with reference to figure 10. Pilot band 18, 19 consists of many located directly adjacent carrier frequencies on which display pilot signals. As a result, each code combination of signals can have one pilot band 18, or may have two pilot band 18, 19, one at the beginning and one at the end of the code combination of signals in the direction of frequency. The length of the pilot strips (the number of carrier frequencies allocated to the pilot bars), preferably the same for each code combination signals. The length of the strip 39 of the transmission of each code combination 30 of signals may be the same as the strip 38 of bandwidth, which can be configured tuner device 63 admission. However, the bandwidth of the transmission, which can be configured tuner device 63 intake can be greater than the length of the code combination 30 signals. The display data signals and pilot signals on different carrier frequencies are performed using 60 frequency conversion in the conversion from frequency region to time. All of the statements above (and below) in respect of the pilot signals contained in the code combinations of signals can also be applied to the pilot signals contained in the code combinations of the data, as explained, for example, with reference to Fig.

Received pilot signals mapped to each m-th carrier frequency and/or contained in the pilot strips received code combinations of signals, after conversion in region h is the frequency of tool 68 converts the time frequency) are used for channel estimation of the carrier frequencies in the frame means 69 channel estimation, which provides the means 70 Troubleshooting display necessary information of channel estimation, providing the opportunity to correct demodulation of the data in the received code combinations of data. Also, the received pilot signals used in device 63 for detecting the integer frequency offset in the corresponding tool 67 detecting integer offset frequency, which enables the detection and then compensate for the integer frequency offset of received signals. The integer frequency offset is the deviation from the original (transmitted) frequency in multiples of the spacing between the carrier frequencies. Received pilot signals are additionally used to detect the start of frame 29, 29' (the beginning of the frame, in the field of time and frequency).

Each code combination 31 signal contains, for example, the location code combination 31 signals in the frame. For example, each code combination 31 of the signals in each of the frames 29, 29' has and carries identical data signals, except for the location of the corresponding code combination of signals in a frame, which is different in each code combination 31 signals in the frame. The data signals represent, for example, data signals L1, which contain all of the information is the situation of the physical layer, which is necessary for a device 63 for decoding received signals. However, any other appropriate data signals may be contained in the code combinations 31 signals. Code 31 signals may include, for example, the location of the corresponding segments 32, 33, 34, 35, 36 data so that the device 63 reception has information where required data segments so that the tuner device 63 can be adjusted to an appropriate location to receive the required data segments. Alternatively, as noted above, each code combination of signals in a frame can contain identical data signals, and the location of the corresponding code combination of signals in a frame transfer using signals other way, for example, using the sequence of the pilot signal code combinations of signals or using the information encoded in the protective strips or the like. As noted above, each of the code combinations 31 signals may contain information about each of the code combinations of the data contained in the frame. However, in order to reduce the number of service data, each code combination 31 signals may contain information only about the part or some of the code combinations of data, such as, but b the h constraints, those that are within (or placed within and adjacent bands, which is code combination 31 signals. In the example shown in figure 4, the first code combination 31 of signals in a frame may contain information about the code combinations 32 and 33 of the data (in the direction of time following code combination data 32', 32"... 33', 33" and so on). The second code combination of signals in a frame may contain information about the code combinations of data 33, 34 and 35 (and in the direction of the following combination of data 33', 33"... 34', 34"... 35', 35" etc).

As shown in Fig, the device 63 after funds 65 receiving tuner, includes a tool 66 sync time made with the possibility to synchronize the time and the means 67 for detecting the fractional shift in frequency which has a capability to perform detection of the fractional shift in frequency and the compensation received symbols in the field of time. The received symbols in the area of time then passed to the tool 68 converts the time frequency for conversion of received signals in the time portion in the frequency range where the data signals (after optional reverse engineering tool 71 reverse engineering) demodulator tool 72 Troubleshooting display and then carry out their assessment tool 73 evaluation. The tool 73 OC the NCI made with the possibility of allocation of the necessary and required information signals from the received data signals. If necessary, additional structure of signals may be provided in the direction of time, immediately after structures 31 signals.

Structure or code combination 29 frame further comprises at least one code combination or data segment, continuing across the strip 24 of the transmission frequency in the direction of the frequency, and the following code combination 31 of signals in the time direction. In the time interval that follows immediately after time interval in which the posted code combinations 31 signals, structure 29 of the frame shown in figure 4, contains several segments 32, 33, 34, 35, 36 and 37 data with different length, i.e. with different respective carrier frequencies to which the display data. Structure 29 of the frame further comprises additional data segments in successive time intervals, resulting in additional code data, respectively, have the same length and the number of carrier frequencies, as applicable, preceding code combination data. For example, combination 32', 32", 32'" and 32"" data have the same length as the first structure 32 of the data. Patterns 33', 33", 33'and 33"" data have the same length as the segment 33 of the data. In other words, the additional code data and EUT the same structure in the measurement of frequencies, that and several code combinations 32, 33, 34, 35, 36 and 37 of the data in the first time interval after code combinations 31 signals. Thus, if the device 63 receiving, for example, is configured on the part 38 of the bandwidth for transmission of the reception code combination 35 data, all subsequent in the direction of the time code combination 35', 35" and 35'" of data that have the same length, and code combination, 35 data can be properly taken.

As noted above, the tool 59 forming the frame may form the corresponding lines of code combinations of data, continuing across the strip 24 bandwidth transmission, one after the other, i.e. the time interval for the time interval. For example, combination 32, 33, 34, 35, 36, 37 data will be generated by the tool 59 forming a frame, and then converted from frequency region to time. After this code combinations 32', 33', 34', 35', 36', 37' data will be generated by the tool 59 forming a frame and then converted from frequency region to time. After this code combinations 32", 33", 34", 35", 36", 37" data will be generated by the tool 59 forming a frame and then converted from frequency region to time and so the Transformation of the field frequency in the region of time will be performed by the tool 60 conversion from frequency region in which the time, in which the data display on the carrier frequency during the conversion from frequency region to time.

Flexible and variable structure code combination data structure or code combinations 29 of the frame, as suggested in the present invention, may, for example, be embodied in the device 54 in accordance with the present invention, as shown in Fig, by displaying different data streams, for example, data of different types and/or data from different sources, as visually represented data 1, data 2 and data 3 branches on Fig. The data content of each branch modulate in accordance with embodied modulation scheme, for example, QAM, or any other appropriate modulation in the respective means 58, 58', 58" of the modulation. The corresponding data content is then placed in the form of code combinations of data means 59 of the forming frame, for example, by using the form code combinations of data contained in the tool 59 forming a frame, or using any other respectively embodied module, tools, block or the like. As noted above, the tool 59 forming the frame also forms a code combination of signals with the data signals and pilot signals, which are passed to the tool 59 forming a frame using COO the relevant module generating a pilot signal (not shown), for example, by using the forming frame, or using any other suitable unit, module or element contained in the tool 59 of the forming frame. The means 59 of the forming frame and then generates frames with patterns 29, 29' of the frame with the coded combinations of signals and code combinations of the data, as described. As noted above, a means forming a frame 59 may be embodied in one or more modules, or may also be a part of other processing modules or modules processing units. In addition, the tool 59 forming a frame can be made with the possibility of forming a frame 29 a piece at a time in successive periods of time, for example, by forming a first sequence of code combinations 31 signals in the first time interval and by extension to the entire band 24 of the transmission gear, then by generating a sequence of code combinations 32, 33, 34, 35, 36, 37 data in the second time interval and by extension to the entire band 24 bandwidth transfer etc. Data signals, pilot signals and data content, and then, separately, one after another convert from frequency region to time and reflect on the carrier frequency, using the tool 60 frequency conversion at the time (which, for example, is a means for brachnogo fast Fourier transform or the like). Thus, it should be noted that the structure 29, 29' of the frame forms the basis for frequency conversion at the time. The data signal includes pilot signals and data content each of the time intervals (in the field of time structures 29, 29' of the frame) of the entire strip 24 of the transmission display at the carrier frequency. In other words, all structures of the entire strip 24 bandwidth transmission in each time interval can be shown on the required number of carrier frequencies. For example, the first time interval (i.e., all code combinations 31 signals) of the frame structure 29 figure 4 then yields a symbol signals, the second time interval (i.e., all code combinations 32, 33, 34, 35, 36, 37 the data structure of the frame results in the formation of character data, etc. are correctly formed characters in the field of time (for example, characters OMCR) then transfer of funds 60 frequency conversion at the time, in block 57 adding a guard interval, which adds a protective intervals to symbols in the field of time. Thus the generated transmission symbols are then passed through means 61 pass through the interface 62 of the transmission, which represents, for example, the corresponding antenna, the antenna pattern or the like.

As noted above, at least n which are of different code combinations of data may have different lengths, that is, a different number of carrier frequencies, when the carrier frequencies are equidistant and have the same bandwidth, respectively. Alternatively, the number of combinations of data in the direction of the frequency can be the same as the number of combinations of signals, the length (or bandwidth) of each of the code combinations of data may be identical to the length of each code combination signals, and they can be aligned with each other (may have the same structure in the direction of frequency). Alternatively, each code combination of data can have the same length, and the number of combinations of data may be an integer multiple of the number of combinations of signals, so they still have the same structure and frequency alignment. Thus, for example, 2, 3, 4 or more code combinations of data can be aligned with the coded combinations of signals. Usually, the length of the code combinations of data must be less than or, at most, equal to the effective bandwidth of the receiver so that the code combinations of data can be taken in the device 63 admission. In addition, the device 54 may be configured to dynamically change the structure of the code combinations of data, such as the EP length and/or number of code combinations of data. Alternatively, the structure of the code combinations of data may be fixed or constant.

Usually (for all variants of the embodiment described here), the device 54 may be configured to only generate and transmit a code combination signals, if you want to pass the appropriate combination of data (in time direction). In other words, generate only the code combination of signals in the locations where data is transferred. Thus, combination of signals extending over the code combinations of the data (in the direction of frequency)can be cut (not passed), if possible re-sorting in the receiver, and one full code combination of signals may be received as a result of re-sorting the received parts. Alternatively, combination of signals can be transmitted even if you do not want to assign any combination of data that follow them in the direction of time. In practice can be implemented in combination of any type of these two.

In addition, it should be noted that the combination of data, preferably, may contain pilot signals mapped on some of the carrier frequencies, for example, every n-th carrier frequency, where n is an integer num is > 1, in order to provide the ability to fine channel estimation on the receiving side. Thus, the pilot signal can be scattered among the carrier frequencies with the data in the form of regular or irregular patterns all code combinations of data in one time interval of the frame 29, 29', i.e. in the entire bandwidth of the transmission. In addition, each of the first and the last of the carrier frequencies of the entire bandwidth of the transmission can always carry a pilot signal so that a continuous pilot signals present in the carrier frequencies in the time direction. Also, additional pilot signals may be present in the selected carrier frequencies. The pilot signals in the code combinations of data can be formed, for example, the sequence of the pilot signal, which may be any type of appropriate sequences with good correlation properties, for example pseudotumour sequence PSDP (pseudorandom binary sequence), or the like. The sequence of pilot signals may be, for example, is the same in each frame (in frequency), or one pilot signal can be used for the whole band 1 bandwidth transmission or even the entire bandwidth of the medium (or, at least, for her part). Generator PSDP device used in the e 54 transmission, this pilot signal may be generated for each carrier frequency, but will only be used those which are intended for pilot signals. In the case of the pilot sequence for the entire bandwidth of the transmission medium generator PSDP can be initialized only once on the (virtual) frequency 0 MHz so that the sequence of the pilot signal will be unique. Alternatively, the sequence of the pilot signal may be repeated several times in frequency, but must be unambiguous in the corresponding bandwidth of the transmission (for example, the sequence of the pilot signal may be repeated every 200 MHz or any other appropriate way).

The device 54 transfer data from various means 58, 58', 58" modulation then combined with a pilot signal, receiving a code combination or structure 29 of the frame in accordance with the present invention the means 59 of the forming frame.

Usually, the structure of a frame in accordance with the present invention can be fixed or permanent, that is, the total bandwidth and the length of each frame in the time direction can be fixed and always the same. Alternatively, the frame structure may also be flexible, that is, the total bandwidth carrying capacity, the project and/or the length of each frame in the time direction can be flexible and change from time to time depending on the desired application.

For example, the number of time intervals with the code combinations of data can be flexibly changed. As a result, changes can be transmitted using a signal pickup device in the data signals coded combinations of signals.

During the start-up phase or phases of initiation device 63 of the receiving device 63 is configured to receive a random part of the total frequency bandwidth of frequencies. Unlimited example of a cable system broadcast code combination 30 signal may have a bandwidth to 7.61 MHz or 8 MHz (it should be understood, however, that the code combination of signals may also have any other bandwidth, such as 4 MHz, 6 MHz, and so on). Thus, during the start-up phase, the device 63 receiving is configured to receive all code combinations 30 signals in the source or reordered sequence and synchronize the time in the tool 66 time synchronization, for example, by performing the correlation of the guard interval for protective intervals of the received symbol signals (or data symbols), or using any other appropriate technology to ensure time synchronization. The device 63 receiving further comprises mentioned means 67 detection fractional shift in frequency, which is performed with the option to perform the detection and the calculation of the fractional shift in frequency of the signals received by fractions between carrier frequencies, to ensure the possibility of compensation of fractional frequency. The resulting information about the fractional shift in frequency can then be transferred to the tuner contained in the tool 65 technique, which compensates the fractional frequency. Compensation fractional frequency can also be performed using any other appropriate technology. After converting the received signals in the field of time in the range of frequencies means 68 converts the time to the frequency of the pilot signals in the received structures of signals used to perform channel estimation (usually coarse channel estimation) tool 69 channel estimation and/or calculation of the integer frequency offset. The calculation of the integer frequency offset is performed in the tool 74 detection of the integer frequency offset, which is performed with the opportunity to detect and calculate the frequency offset of received signals from the original patterns of frequencies in which the offset frequency count as integer multiples of the values between carrier frequencies (thus receive the integer frequency offset). Thus obtained information about the integer frequency offset can then be transferred to the tuner, which is contained in the tool 65 reception, which then compensates the integer frequency. Compensation a whole is islenos frequency can also be performed using other appropriate technology. Since the displacement of the fractional frequency has already been calculated and compensated by using the 67 detection fractional shift in frequency, therefore, can be achieved by full compensation of the frequency offset. In the tool 73 evaluation device 63 receiving the received data signal estimate, for example, the location of the received code combinations of signals in the receive frame so that the receiver can freely and flexibly adjusted to the respective desired position of the frequency, such as the portion 38, shown in figure 4. However, to enable a proper assessment of the data signal code combinations 31 signals when the position adjusting device 63 receive does not match the structure of the code combinations of signals, the order of the received signals must be re-modified, that is in the tool 71 reverse engineering, as described above. Figure 5 shows such a re-changing the order in the form of a schematic example. The last part 31' of the previous code combination signals take before the first part 31 of the subsequent code combination signals, after which the tool 71 reconstructing places part 31' after part 31 for reconstructing the original sequence of data signals, then the code combination of signals from the reordered evaluate the tool 73 illustrates the key, after the corresponding address of the display data signals on carrier frequencies in the tool 72 correct display. It should be remembered that the content of each code combination 31 of signals will be the same (or almost the same), so the change is possible.

Often, the reception device does not provide a flat frequency response across the bandwidth of the reception, which is configured receiver. In addition, the transmission system is usually faced with increased attenuation at the border of the window bandwidth reception. Figure 6 shows a schematic representation of example a typical form of the filter. You can see that the filter is not rectangular, so, for example, instead of the bandwidth is 8 MHz, the reception device is able to effectively take only the bandwidth to 7.61 MHz. As a result, the device 63 may not be able to re-change the order of the data signals, as described with reference to figure 5, when the structure 31 of the signals has the same length and bandwidth, as the bandwidth of the receiving device 63 reception, so some signals will be lost and will not be accepted at the border of the bandwidth of the reception. To avoid this problem and other problems and to provide for a device 63 receive the opportunity to take one is full of coded combinations of signals in the source sequence, without having to do a change order or layout of received signals, the present invention alternatively or in addition it is proposed to use the code combination signals 31A, which have a reduced length, such as, for example, to 7.61 MHz (or any other suitable length), compared with the bandwidth of the receiver.

In accordance with the example shown in Fig.7, it is assumed to use a code combination signals 31A, which are half the length of the bandwidth of the receiver, but still the same structure frequencies. In other words, the corresponding two (or pair) code combination signals 31A half-length display and level in the receiver bandwidth. As a result, each pair of code combinations 31A signals can have identical data signals or nearly identical data signals, comprising (changing) location code combinations 31A signals in the corresponding frame. However, with respect to other pairs of coded combinations of signals in these other pairs, because they have a more appropriate location in the frame, the data signal should be identical, except for the information location. In the example described above, the device 63 receiving, with a bandwidth or a length of 8 MHz, each code combination 3A signals may then have the bandwidth or the bandwidth of 4 MHz. Thus, to enable transfer of the same number of data signals, as before, it may be necessary to add additional code combinations 31b signals half the duration of the time interval preceding the coded combinations of signals 31A and before code combinations 32, 34, 35, 36 and 37 of the data. Additional code combinations 31b signals have the same layout/alignment in the field frequency, and code combination signals 31A, but contain more and different information signals such as information signals contained in the code combinations 31A signals. Thus, the device 63 of acceptance will be performed with the opportunity to take full code combination 31A and 31b signals, and means 71 reconstructing the pickup device will be made with the possibility to combine data signals coded combinations 31A and 31b of the signals in the source sequence. In this case, the tool 71 reconstructing device 63 can be excluded.

Also, preferably, it is possible to provide only one time interval with code combinations 31A of the signal half-length, if all the necessary data signals can be transmitted at half the length, and additional code combinations 31b signals are not required. In this case, each code of combines the I signals 31A contains identical (or almost identical) data signals, and each received code combination signals 31A provides the ability for the device 63 reception is always to tune in and take any desired portion of the bandwidth of the transmission and, thus, the desired code combination (combination) of data. In the alternative, the code combination of signals that is greater than half the length, can be used in subsequent time interval after code combinations 31b signals.

In General (for all variants of the embodiment of the present invention), it should be noted that the length (or bandwidth) of the code combinations of data and/or code combinations of signals can be adapted, for example, it may be less than or, at most, can be equal to the effective bandwidth of the device 63 receiving, for example, the output bandwidth of the band pass filter receiving as described above.

In addition, all variants of the embodiment of the present invention may be preferable if, after one or more code combinations 31; 31A, 31b of the signals in the time direction should one or more additional code combinations of signals of the same length and with the same location in the frame. For example, the first code combination of signals in a frame can have one or more additional code combinations of signal in the subsequent time in which illalah. Additional code combination signals, therefore, may have identical or nearly identical information signals from the first code combination signals. Alternatively, the corresponding two successive code combinations of signals in the time direction together can provide complete data signals. Other code combination of signals in a frame may not necessarily have additional code combination signals. Usually, the number of combinations of signals in each location according to the frequency in the frame may vary. For example, it may be preferable that each location on the frequency in the frame was provided by the multiple code combinations of signals that are required with regard to rejectee frequency or other irregularities. Alternatively or additionally, the number of combinations of signals at each location according to the frequency in the frame may vary depending on the number of data signals. Thus, for example, if a greater number of code combinations of data must be transferred as signals, additional code combination of signals may be required in the time direction. The length of these code combinations of signals in the time direction, thus, can be part of the data signals, the content is working in the code combinations of signals.

In non-restrictive example of transmitting and receiving data signals, such as data signals L1 (Level 1), and additional pilot signals that are used for integer frequency synchronization and alignment of the channel and code combinations of data based on OMCR. These signals are passed in the form of blocks or code combinations, for example, at 4 MHz, but you can use any other suitable size. The only necessary condition is to get one complete code combination of signals within the settings window, but this condition can be accomplished by using two or more code combinations of signals having a smaller size, following each other in the time direction, as described with reference to Fig.7. Therefore, the maximum bandwidth of the code combination of signals may be, for example, the window settings of the tuner of the prior art, for example, to 7.61 MHz. Some numerical examples below. In the first example, each code combination, 31; 31a, 31b signals covers exactly 4 MHz, this corresponds 1792 bearing frequencies OMCR and has a duration of TUuseful part of the symbol OMCR 448 μs. In the second example, each code combination signals covers to 7.61 MHz (exactly 3409/448 ISS), while it corresponds 3409 bearing the CDM and has a duration of T Uuseful part of the symbol OMCR 448 μs.

In accordance with the first aspect of the present invention, a pilot signal display on each m-th carrier frequency 17 code combination signals 31A, as schematically shown in Fig.9 (m is an integer >1). Also, however, it should be clear that this applies equally to the code combinations 31 signals, shown in figure 4, or, in General, to the code combinations of signals of any appropriate length (i.e. 4 MHz, 6 MHz, To 7.61 MHz, 8 MHz, and so on). Carrier frequencies between 16 carrier frequencies, which carry a pilot signal, transfer the data signals. The display data signals on carrier frequencies 16 and display pilot signal 17 on each m-th carrier frequency is performed with the tool 60 frequency conversion at the time, which is contained in the device 54 of the transmission, as shown in Fig. Typically, as noted above, the pilot signals form the sequence of pilot signals. As a result, the pilot signals, for example, modulate relative to each other by using a modulation scheme, which may be differential, such as, but without limitation, D-BPSK (D-Dfmn, differential binary phase shift keying). The pilot sequence, for example, is obtained by using PSDP (register pseudorandom binary serial is a major, for example, 2^23-1). The frequency of m repetitions should provide unambiguous decoding of Dr. Dfmn on the receiving side, such as the device 63 to receive in accordance with the present invention, as shown in Fig, even for channels multipath transmission. The repetition rate m is, for example, 7, 14, 28 -- for code combinations of signals of 4 MHz, as 7, 14, 28... are the factors of a number 1792 (= number of carrier frequencies in a code combination of signals of 4 MHz). In this example, the preferred value of repetition is a m=7. In other words, each m-th carrier frequency carries a pilot signal, even between adjacent coded combinations of signals, that is, the repetition rate applies to all code combinations of signals even from code to code combinations, and not only inside the code combinations. In this example, you get 256 of the pilot signals on the code combination signals, the length of 4 MHz. However, other values of the recurrence, in addition to the above examples may be preferred, depending on the respective length code combination signals and/or other factors. For example, if the length or combination of signals to 7.61 MHz (having, for example, 3408 bearing OMCR) preferred value of repetition may be 6 or 12 (m=6 or 12), but you can use the ü other relevant values. When the code combination (combination) data transfers pilot signals mapped on some of the carrier frequency between the carrier frequencies from the data, it may be preferable that the pilot signals are mapped on the carrier frequencies code combinations (combinations) data in field locations, which correspond to the bearing frequencies in code combinations (combinations) signals, which displayed the pilot signals. Thus, the density of the pilot signals in code combinations (combinations) data does not need to be as high as the density of the pilot signals in code combinations (combinations) signals. For example, if the pilot signal display on each m-th carrier frequency in the code combinations (combinations) signals (m is an integer >1), the pilot signal can be displayed on every n-th carrier frequency code combinations (combinations) of data, where n is an integer >1 and an integer multiple of m. As a preferable example, if m=7, then n=28 (or any other appropriate number). A pilot signal code combinations (combinations) of data can form the sequence of the pilot signal, as explained for code combinations (combinations) signals.

What about the formation of posledovatel the particular pilot signal code combinations (combinations) signals or code combinations (combinations) data which represents, for example, PN (PN, pseudotumour) - sequence, there are two options:

- Option 1: Each code combination of signals in each frame takes a different sequence of pilot signals. In the example above, the initialization of the register PSDP combined with the transmission frequency. 256 pilot signals are placed in each block of frequency 4 MHz. The sequence of the pilot signal in each block of 4 MHz is calculated separately. This helps to ensure efficient memory implemented on the receiver side.

- Option 2: the Sequence of the pilot signal used once for all code combinations of signals contained in the whole bandwidth of the transmission or even the bandwidth of the transmission medium. The receiver, for example the receiving device 63, and stores this known sequence, for example, in the means of preserving or generates an appropriate means of generating a pilot sequence, which can be a part of or may be external to the tool 74 detection of the integer frequency offset, and allocates a block of frequencies that corresponds to its current location settings.

As shown in Fig, pilot signals to coded combinations of signals passed to the tool 59 forming a frame that com is inruet data signals, pilot signals to coded combinations of signals in accordance with the present invention. Pilot signals to data signals, thus, for example, generate within the device 54 transmission using, for example, an appropriate means of generating pilot signals, such as, but without limitation, PSDP. The generated sequence then, for example, modulate using modulation schemes, such as the modulation scheme with binary phase shift keying or modulation scheme with differential binary phase shift keying, or using any other scheme, while the modulated sequence of the pilot signal transmit means 59 of the forming frame. As noted above, the tool 59 forming frame combines pilot signals and data signals in a code combination of signals. As a result, the data signals are treated properly, for example, using coding errors (as noted above), as well as modulate, using, for example, but without limitation, the modulation scheme is 16 QAM. As additional features, combination of signals containing data signals and pilot signals, after means 59 of the forming frame, can be subjected to scrambling in the appropriate means of scrambling, which is performed with the opportunity to scramble the pilot signals in coded combinations of signals using additional PSDP, Shiner rowanne using the appropriate register pseudo-random binary sequence. This possibility can be applied to the above option 1 and option 2, or any other relevant variants of the embodiment. The scrambling code combinations of signals may, for example, be made from frame to frame, or may be performed over the entire bandwidth of the transmission or, even, across the bandwidth of the transmission medium, as noted above. When using a sequence of the pilot signal over the entire bandwidth of the transmission medium, as noted above in option 2, or in the case of scrambling code combinations of signal, this sequence of pilot signals may be, for example, generated using the appropriate register pseudorandom binary sequence that initiates the sequence on the (virtual) frequency 0 MHz up to the top of the order of the bandwidth of the transmission medium, which may be, for example, 862 MHz, or even higher, depending on the embodiment. Scrambling code sequence is then passed to the tool 60 frequency conversion during and additionally processed.

All other bearing 16 within the code combination signals are used to transmit data signals L1. The start of the data signals in each code sequence is always aligned with the structure of 4 MHz or to 7.61 MHz or 8 MHz, and so on), that is, always starts from a position that is a multiple of 4 MHz (or to 7.61 MHz or 8 MHz, and so on) in the above example. Each code combination signal of 4 MHz (or to 7.61 MHz or 8 MHz, and so on) can carry exactly the same information as the sequence of the pilot signal or the sequence of the pilot signal transmitting device 63 receiving information about the location of the corresponding code combination signals in each frame. Alternatively, each code combination of signals may further comprise a location code combination signals in the frame. In addition, to reduce the relationship of peak power to average power of the output signal in the time portion of the data signals in each code combination of signals may be scrambled at the transmitter, using a unique scrambling sequence, which can be obtained by using the number code combination signals.

The device 63 receiving pilot signals contained in the code combinations 31; 31a, 31b signals used (after the conversion time in the frequency of the received symbols in the field of time means 68 converts the time-to-frequency) detection means integer offset 74 frequency for detection of the integer frequency offset, the result of which then ICP shall lsout device 63 for receiving compensation integer frequency offset in frequency. More specifically, the pilot signal (which, for example, modulated for DR. DFMN)contained in the code combinations of the signals in the accepted frequency range (eventually, after diskriminirovaniya) demodulator tool 75 demodulation (which, for example, performs demodulation DR. DFMN)contained in the tool 74 is detected, the integer frequency offset. In the case of a differential modulation of the pilot signals, for example D-DFMN, there is no need to perform a channel estimation for pilot signals, since a relatively short echo channel lead to very slow changes in the direction of frequency. Then, the tool 76 correlation contained in the tool 74 detection of the integer frequency offset, performs correlation demodulating pilot signal sequence of the pilot signal stored or generated the expected sequence of the pilot signal, for example a sequence PSDP, to align with the exact frequency offset. The correlation is performed with the sequence PSDP, which is expected at the beginning of the code combination of signals can be represented as lists in the tables on the receiving side). If this sequence is found in the accepted symbol, get the peak synchronization device 63 reception has accurate information about the frequency offset and the comp is sirwec it. More specifically, the resulting integer frequency offset can be transferred and can be used in the tool 71 reverse engineering, and tool 72 Troubleshooting display for correct demodulation of data signals, and may also be referred to and can be used in the tool 69 channel estimation to perform channel estimation and therefore alignment. In addition, the detection of the peak synchronization provides the ability to detect the start of a frame.

The required synchronization time, and the detection of the fractional frequency offset compensation is performed, for example, in the field of time taken by the characters in the sphere of time, the tool 66 sync time and the means 67 for detecting the fractional shift in frequency, using the correlation of the guard interval, using protective intervals of received symbols, signals and/or data symbols (see Fig, which shows the view in the time frame with the symbols of the signals, the data characters and protective intervals). Synchronization time, in the alternative, may be made by absolute correlation values between received symbols in the field of time and symbols in the field of time, generated by the receiver, in which the modulated only pilot signals. The peak correlation of received symbols and symbol sgen risovannogo receiver provides precise synchronization time.

In accordance with the second aspect of the present invention, which is schematically shown in figure 10, each code combination signals 31A (or code combination 31 signals) contains at least one strip 18, 19 of the transmission of the pilot signal containing pilot signals mapped on the carrier frequencies 20, 21 of the strips 18, 19 of the pilot signals. Strips 18, 19 of the pilot signals, respectively, contain a lot directly adjacent to each other of the carrier frequencies on which display pilot signals. Each band 18, 19 of the pilot signals may have the same number of carrier frequencies or different number of carrier frequencies. Thus, each code combination signals 31A may contain pilot band 18, 19 at its beginning or at its end (in the direction of the frequency). Alternatively, each code combination of signals may contain pilot band 18, 19 at each boundary, i.e. at the beginning and at the end of the code combination. All other statements and definitions given above in relation to the first aspect of the present invention are also applicable to the second aspect, includes Option 1 and Option 2. It should be understood that the first and second aspects of the invention can be combined, that is, each code combination of signals may include at least one pilot band 18, 19 as described above, as well as pilot signals mapped to each m-th carrier frequency 12.

In both aspects of the present invention described above, the relationship between the number of carrier frequencies with pilot signals and the number of carrier frequencies with the data signals in each code combination of signals may be variable and may match the respective transmission signals and compensate for the offset.

As schematically shown at 11, the device 54 may be left blank (clip out) certain areas 22, 23 of the total bandwidth of the transmission to prevent violations of the cable network to other services, such as radio station of the aircraft. Therefore, some part of the spectrum may not be modulated. In this case, the affected carrier frequencies within the code combinations 31; 31a, 31b signals will be modulated. Because the synchronization is proposed in accordance with the present invention, a very strong, this does not affect the performance characteristics frequency synchronization using the pilot signals, modulated with DR. DFMN. The missing part of the data signal is recovered by means of repetition of data signals (each code combination 31; 31A, 31b of the signals in the frame contains identical or nearly identical data signals), for example, by a combined the Finance parts of the two located next to each other code combinations of signals, as shown at 11, and, ultimately, with the use of strong protection from bugs, added to the code combinations of signal means 56 coding errors contained in the device 54 transmission. Missing portions of the data signals on the edges of the bandwidth of the transmission should be considered as a very wide cut.

Alternative or additional possibility of working with cut-outs or other problems may include additional separation of code combinations 31; 31A, 31b signals into two or more parts and the inverting this sequence of two or more parts in each code combination signals (frame) from frame to frame. For example, if the first code combination of signals in a frame is divided into first and second (next part) part (corresponding to the first code combination signals, located in close proximity to the frame, you will have a second part at the beginning and the first part of the signals next, that is, the inverted sequence. Thus, if, for example, the second part will contain cuts, or it will affect any violations, the receiver can be forced to wait for the arrival of the next frame, in which the second part can be adopted without problems (pascalc the subsequent first part can be adopted with violations).

Adaptation code combinations 31; 31a, 31b signals of different bandwidth settings on the receiving side can be performed, for example, by changing the breach of the carrier frequencies in the code combinations of signals. Alternatively, it is possible to maintain a constant distance between the carrier frequencies and you can cut part of the code combinations of signals at the edges of the bandwidth of the transmission, for example, due to the fact that will not be modulated corresponding frequency, as schematically shown in Fig, which presents the adaptation scheme with the structures of the signals from 4 MHz to 6 MHz, and the bandwidth settings, thus, ensures the reception of the code combinations of data having a length of up to 6 MHz.

Ultimately, each code combination 31; 31A, 31b of the signals, if necessary, contains a protective strip at the beginning and at the end of each code combination. Alternatively, in some embodiments, the embodiments may be preferred that only the first code combination signals in each frame, in the example shown in figure 4, the code combination of signals at position 39, could contain a protective strip only at the beginning of the code combination, and the last code combination signals in each frame must contain a protective strip only at the end of the code combination. In ka is este alternatives in some applications, only the first code combination signals in each frame, in the example in figure 4 code combination signals in position 39 may contain a protective strip at the beginning and at the end of the code combination, and, at least, the last code combination signals in each frame may contain a protective strip at the beginning and at the end of the code combination. The length of the protective strip contained in some or all of the coded combinations of signals may be, for example, less than or at most equal to the maximum frequency offset that can work the pickup device. In the above example, the bandwidth of the receiver 8 MHz guard band may, for example, have a length of from 250 to 500 kHz, or any other appropriate length. Also, the length of each of the protective strips contained in the code combinations of signals may be at least equal to the length of the bearing, which does not take in the pickup device due to the characteristics of the filter, as described with reference to Fig.6.

For example, in the system OMCR, in which the total bandwidth of the transmission is a multiple of 8 MHz (4nk: it represents the size of the window Fourier transform of 1024 bearing/samples, n=1, 2, 3, 4...), and each code sequence has a length of 4 MHz, the length of each guard band at the beginning and at the end of each code combination of signals may be 343 chosen to replace the frequency (which is the amount not used carrier frequencies in the code combinations of the data at the beginning and end of each frame, in each mode 4nk). The resulting number is suitable for beneficial use of the carrier frequencies in each code combination of signals could be 3584/2-2×343=1106 carrier frequencies. It should be understood, however, that these numbers are used only as examples and do not imply a limitation in any sense. Therefore, the length of each of the protective strips contained in the code combinations of signals may be at least the length of the carrier frequency, which is not accepted in the pickup device due to the characteristics of the filter, as described with reference to Fig.6, so that the length of the data signals in each code combination of signals is equal to (or smaller than) the effective bandwidth of the receiver. It should be noted that if additional code combinations 31b signals will be present, they will have identical protective strip as the code combinations 31A signals. In addition or alternatively, each code combination of data may contain the protective strip from the unused carrier frequencies at the beginning and at the end of each code combination. Alternatively, in some embodiments, only the corresponding first code data in each frame in the direction of the frequency, in the example in figure 10 and 13, combination 32, 32', 32", 32'", 32"" data can sod the rust protective strip at the beginning of the code data, and the last code combinations of data in each frame in the direction of the frequency, in the example shown in figure 4 and 7, combination 37, 37', 37", 37'", 37"" data may contain a protective strip at the end of each code combination data. Thus, the length of the protective strips of the code combinations of data could, for example, be the same as the length of the protective strips of the code combinations of signals, if the code combination signals contain protective strip.

As noted above, the data signals contained in the code combinations 31, 31A and/or 31b signals (or other coded combinations of signals in accordance with the present invention), contain information of the physical layer, which provides for a device 63 for reception in accordance with the present invention the possibility of obtaining information about the structure of the frame and the ability to receive and decode the desired code combination data. As a non-limiting example, the data signals can contain parameters, such as total or full bandwidth transmission, the location of the respective coded combinations of signals in a frame, the length of the protective strip to code combinations of signals, the length of the protective strip to code combinations of data, the number of frames that make up a superframe, the number of present frame within superf is AMA, the number of combinations of data in the frequency measurement of the total bandwidth of the frame, the number of additional code combinations of data in the time dimension of the frame and/or a separate data signals for each combination of data in each frame. Thus, the location of the respective coded combinations of signals in a frame may, for example, to indicate the position code combination of signals on the segmentation of the total bandwidth. For example, in the case shown in figure 4, the data signals contain the indicator is if the code combination of signals in the first segment (for example, in the first segment size of 8 MHz) or in the second segment, and so when the code combination of signals is half the length of the segmentation bandwidth, as explained with reference to Fig.7, each pair located next to each other code combinations of signals has the same information location. In any case, the pickup device will be able to tune in the desired frequency band in the next frame, using the information about the location. Separate data signals represent a separate data block, individually determined for each combination of data present in the frame, and can contain parameters, such the AK first carrier frequency code data, the number of carrier frequencies allocated to code combinations of data modulation, is used to code data code protection against errors that are used to code the data using the interleaver time code data, the number of cut frequencies (carrier frequencies that are not used for data transmission code data in the code data, the position of the notch frequency and/or width of cut frequencies. The tool 60 conversion device 54 drives are designed with the ability to display the respective data signals on carrier frequencies of each code combination signals. The tool 73 evaluation device 63 receiving is configured to evaluate the received data signals and the use or transfer of the information contained in the data signal, for further processing in the device 63 admission. When the data signals contain the information of the individual signals for each data present in the frame structure of the code combinations of signal supports a maximum limited number of combinations of data in the direction of the frequency on the frame for limiting the size of each code combination of signals maximum size. Thus, while 38 the number of combinations of data in the direction of the frequency to which each frame can be dynamically and flexibly to change, this can be true only within a certain maximum number of code combinations of data. Additional code combinations of data in the time direction for each frame, respectively, aligned with the previous code combinations of the data, as explained above. Thus, each additional next code combination data has the same position, length, modulation, etc. as the previous code combination data so that the data signals for the previous code combination data are also valid for the following combination of data. As a result, the number of additional code combinations of data in the time direction in each frame may be fixed or flexible, and this information may also be contained in the data signals. Similarly, the structure of the code combinations of signals can only support a maximum limited number of cuts frequencies in each code combination data.

Alternatively or additionally, to overcome the problem, which is that part of the code combinations 31 signals may not be received in the device 63, device 54 of the transfer, if necessary, may contain a means 56 coding errors made with the possibility to add some coding errors, from tocnosti, such as coding with repetition coding with a cyclic redundancy, or the like, to the data signals, which are located in the code combination signals, using the 59 forming a frame. Additional coding errors can provide for a device 54 transfer the ability to use code combinations 31 signals of the same length as the training code combinations 30, as shown in figure 4, as the device 63 reception is executed with the possibility, for example, by using the 71 reverse engineering, to perform the detection and/or error correction of some sort for reconstructing the original sequence.

For the above example code combinations of signals, having a length of 4 MHz, and which are aligned with the segments 8 MHz system OMCR, the following describes specific (lax) an example of the structure of the signals.

For the duration of the symbol OMCR 448 μs, each block of 4 MHz built from 1792 subcarriers OMCR. If the pilot signal at the field frequency is used on each 7-th carrier OMCR within character signals, 1536 bearing OMCR remain for transmitting data signals L1 in each symbol OMCR signals.

These bearing OMCR can be, for example, modulated using a modulation CAM, resulting in the amount of receive 6144 bits within the signal L1. the art of bits must be used with the purpose of correcting errors, for example, for an LDPC code (IHRL, code, low density parity check) code or a reed-Solomon. The remaining "clean" bits are then used for transmission of signals, for example, as described in the table below.

Table

The length of the guard interval
The frame number
The total bandwidth
The total number of data slices
Table number of Podshivalov L1
The number of slices of the data contained in tables
The loop data slices {
The number of data slice
The initial frequency subcarrier
The number of subcarriers in the cut
The depth of the interleave time
Re-processing PSI/SI
The number of cutouts
The loop cut {
The beginning of the cut relative to the beginning of the slice
Width of neck
} End of loop cuts
} End of loop data slice
Reserved bits
CRC_32

Next, the parameters of these signals, referred to in the table above are described in more detail:

The length of guard interval:

Defines the length of the guard interval

Frame number:

A counter that is incremented every frame, i.e. each symbol signals

Total bandwidth:

Full bandwidth transmission channel you are using

The total number of data slices:

This parameter indicates the total number of data slices that is, the code combinations of the data used in the channel

Table number of Podshivalov L1:

The number of tables Podshivalov within data signal the

The number of slices of the data contained in the tables:

The number of data slices, which are presented in the form of the signals in this table signals L1

The number of data slice:

The number of the current data slice

Initial subcarrier frequency:

The initial cutoff frequency of data

The number of subcarriers per slice:

The number of subcarriers for the data slice

The depth of the interleave time:

The depth of the interleave in time within the current slice of the data Re-processing PSI/SI:

Indicates whether re-processing PSI/SI in the transmitter for the current data slice

Number of cuts:

The number of cuts within the current data slice

The beginning of the cut relative to the beginning of the slice:

The initial position of the cut within the data slice relative to the initial cutoff frequency of data

The width of neckline:

The width of the cut-out Reserved bits:

Reserved bits for future use CRC_32:

32-bit CRC encoding (CEC, cyclic redundancy code) for the block signals L1

In order to provide even better reception of the coded combinations of signals in the device 63 of the present invention is additionally proposed to optimize the position of the adjusting device 63 admission. In the examples presented in figure 4 and 7, the receiver configures to part 38 of the strip about the Askania transmission by setting the center portion 38 of the bandwidth around the bandwidth of the frequencies of combinations of data, intended for reception. Alternatively, the device 63 can be configured so that the reception code combinations 31 signals will be optimized by placing portion 38 so that the maximum part of the code combinations 31 signals was adopted, while the desired code combination, the data will still be fully accepted. Alternatively, in the present invention suggested that the length of the associated code combinations of data did not differ from the lengths of the respective code combinations 31 signals by more than a certain percentage, for example 10%. An example of this solution can be found on Fig. The boundaries between code combinations 42, 43, 44 and 45 of the data (in the direction of the frequency does not deviate from the boundaries between code combinations 31 signals by more than a certain percentage, such as (but without limitation) 10%. Such a small percentage can then be adjusted using the above coding errors in the code combinations 31 signals.

On Fig shows a view in time example of the frame 47 in accordance with the present invention. The device 54 of the transfer, after the generated code combination or structure of the frame means 59 of the forming frame, the code combination of the frame in the field frequency to be converted is in the area of time by using 60 frequency conversion at the time. An example of the resulting frame in the area of time is shown in Fig and now contains 49, symbol 50 signaling, additional guard interval 51 and the set of symbols 52 data, which are respectively separated by a protective interval 53. Although the situation in which only one character signals present in the field of time corresponds to the example shown in figure 4, where only one time interval with a code combination of signals present in the structure of the frame in the area of frequency, the example in Fig.7 with two time intervals with code combinations 31A and 31b signals, respectively, could lead to the presence of two code combinations of signals in the field of time, which, ultimately, can be separated by a protective frame. Protective intervals could, for example, be a cyclic continuation of the useful parts of the respective characters. In the example system OMCR symbols, signals and data characters, including their envisaged, in the end, the protective strip, could, respectively, be the length of the symbol OMCR. The frames in the area of time then passed to the tool 61 gear, which processes the signal in the area of time, depending on the system used with lots of carrying, for example, by transformation with increasing signal frequency to the desired often the s transmission. The transmission signals then pass through the interface 62 of the transmission, which may be a cable interface or a wireless interface such as an antenna or the like.

On Fig additionally it is shown that the appropriate number of frames can be combined in a superframe. The number of frames in the superframe, i.e. the length of each superframe in the direction of time may be fixed or may vary. Therefore, there may be a maximum length, which can be dynamically installed superframes. In addition, it may be preferable that the data signals in coded combinations of signals for each frame in the superframe were the same, and that changes in these signals arose only from superframe to superframe. In other words, modulation, coding, the number of combinations of data, etc. could be the same in each frame of the superframe, but may also be different in the next superframe. For example, the length of the superframe in systems broadcast may be greater, since the data signals may not change as often, and in interactive systems, the length of the frame can be shorter, because the optimization of the parameters of transmission and reception can be performed based on feedback from the receiver to the transmitter.

The item is and functions of the device 54 of the transmission, the block diagram of which is shown in Fig, explained above. It should be understood that actual embodiment of the device 54 transmission will contain additional elements and functions necessary for the actual operation of the transmission device in the corresponding system. On Fig shows only the elements and tools needed for clarification and understanding of the present invention. The same applies to the device 63, and the block diagram of which is shown in Fig. On Fig shows only the elements and functions necessary for understanding the present invention. Additional items will be required for the actual operation of the device 63 admission. It should also be understood that the elements and functions of the device 54 of the transfer, as well as devices 63 reception can be embodied in any type of device, system, etc. that is configured to perform the functions described and claimed in accordance with the present invention.

The present invention additionally is directed to the structure of the frame (and accordingly made the transmission device and reception method, as described above), which, as an alternative to the above-described variants of the embodiment does not have many (two or more) of the code combinations of data, in which at least one code combination of data has a length different from the length of another Kodo is the first combination (combinations) of data. This structure of the code combinations of variable length data can be combined, either with a sequence of code combinations of signals with identical length and identical or almost identical) content, as described above, or with a sequence of code combinations of signals in which at least one code sequence has a length and/or content that is different from other code combinations of signals, that is, the variable-length code combination signals. In both cases, the device 63 will need some information about changing the length of the code combinations of data that can be transmitted through a separate channel signalling data or using the signal data contained in the code combinations of signaling data contained in the frame structure, as described above. In the latter case, a possible variant embodiment, in which the first code combination signals in each frame is always the same length so that the receiver can always get information about changing the code combinations of the data by receiving the first coded combinations of signals in each or the necessary frames. Of course, other choices are possible embodiment. The rest still applies the rest of the above description in relation to udovich combinations of data and code combinations of signals, and in relation to the possible variants of embodiment of the device 54 transmission and device 63 admission.

1. The transmission device is designed to transmit signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination, the data referred to the transmission device includes
a means forming a frame, made with the possibility of placing data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, each code sequence has the same length, and placement of data in said at least one code combination in the frame,
the conversion tool is made with the possibility of conversion referred to code combinations of signals and said code combinations of data from the field frequency in the region of time to generate the signal transfer in the field of time, and
the means of transmission, made with the possibility of transfer of the aforementioned signal transmission in the area of time.

2. The transmission device according to claim 1,
in which mentioned pilot signals located in said at least two coded combinations of signals in Frey is e, form the sequence of the pilot signal.

3. The transmission device according to claim 1,
in which mentioned the pilot signals in each one of the said at least two coded combinations of signals form the sequence of the pilot signal.

4. The transmission device according to claim 1,
in which mentioned pilot signals modulate using a pseudo-random binary sequence.

5. The transmission device according to claim 1,
in which the means forming a frame configured to accommodate the mentioned pilot signal in said at least two coded combinations of signals using a differential modulation scheme.

6. The transmission device according to claim 1,
in which the means forming a frame configured to accommodate the mentioned pilot signals such that pilot signals are displayed on every m-th carrier frequency mentioned, at least two code combinations of signals, use the conversion tool, and m is an integer >1.

7. The transmission device according to claim 1,
in which each of the said at least two code sequences contains at least one pilot band, and said pilot signals are arranged in the above-mentioned at least one pilot band.

8. the manual transmission for transmitting signals in a system with multiple carrier based on the structure of the frame, each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination of data, containing the following steps:
place the data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and place the data in the above-mentioned at least one combination data in the frame,
convert the mentioned code combination signals and the above-mentioned combination of data from the field frequency in the region of time to generate the signal transfer in the field of time, and
transmit the said signal transfer in the field of time.

9. A reception device for receiving signals in a system with multiple carrier based on the structure of the frame in the bandwidth of the transmission, each frame contains at least two code sequences that are located next to each other in the direction of frequencies, each of which contains data signals and pilot signals, and at least one code combination data, each of the said at least two code combinations of signals has the same length,
the above reception device contains
tool p is Yama, completed with the settings on and taking them to the selected part of the mentioned bandwidth transmission, and referred to the selected part of the above mentioned bandwidth transmission has at least the length of one of the said code combinations of signals and comprises at least one code combination data intended for reception, and the
a means of detecting the offset frequency, made with the possibility of detection bias frequency on the basis of the pilot signals contained in the received code combination signals.

10. The pickup device according to claim 9,
in which the said means of detection bias frequency provides a means of correlation, is configured to perform correlation on the pilot signals contained in the received code combination signals.

11. The pickup device of claim 10,
in which mentioned the pilot signals in said at least two coded combinations of signals in a frame form a sequence of the pilot signal, and
in which the above-mentioned sequence of the pilot signal contained in the means of preserving contained in the above-mentioned pickup device, which is referred to by means of correlation to perform the mentioned correlation.

12. The pickup device according to claim 11,
in which the said medium is in correlation made with the possibility of execution of the said correlation on the basis of the above sequence of the pilot signal, contained in the said means of reception, which corresponds to the aforementioned selected parts mentioned bandwidth transfer.

13. The pickup device of claim 10,
in which mentioned the pilot signals in each one of the said at least two coded combinations of signals form the sequence of the pilot signal, and
in which the said means of detecting the frequency offset provides a means of calculation performed by the calculation of the above-mentioned sequence of the pilot signal, which are referred to by means of correlation to perform such mentioned correlation.

14. The pickup device according to claim 9,
in which the pilot signal display on each m-th carrier frequency mentioned, at least two structures signals, and m is an integer >1, and
in which the said means of detecting the frequency offset is configured to detect the frequency offset based on the said pilot signals.

15. The pickup device according to claim 9,
in which each of the said at least two code combinations of signals includes at least one pilot band containing the mentioned pilot signal, and
in which the said means of detecting the frequency offset is configured to detect the offset is astate based on the said pilot signals.

16. The pickup device according to claim 9,
containing the synchronization tool of the time, is configured to perform time synchronization based on a correlation of the guard interval.

17. The pickup device according to claim 9,
containing an additional means of detecting the frequency offset, configured to perform detection of the fractional frequency offset based on the correlation of the guard interval.

18. The route of administration, intended for receiving signals transmitted in the system with multiple load-bearing structure-based frame, the bandwidth of the transmission, each frame contains at least two code sequences that are located next to each other in the direction of frequencies, each of which contains data signals and pilot signals, and at least one code combination data, each of the said at least two code combinations of signals has the same length containing the following steps:
accept the selected part of the mentioned bandwidth transmission, and referred to the selected part of the above mentioned bandwidth transmission has at least the length of one of the said code combinations of signals and comprises at least one code combination data intended for reception, and the
detects the offset h is the frequency on the basis of the pilot signals, contained in the received code combination signals.

19. The system is designed to transmit and receive signals containing a transmission device designed to transmit signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination, the data referred to the transmission device includes:
a means forming a frame made with the possibility to place the data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and
to place the data in the above-mentioned at least one combination data in a frame conversion tool, made with the possibility of conversion referred to code combinations of signals and said code combinations of data from the field frequency in the region of time to generate the signal transfer in the field of time, and
the means of transmission, made with the possibility of transfer of the aforementioned signal transmission in the field of time, and the system further comprises a pickup device according to claim 9, configured to accept mentioned with the persecuted transfer in the field of time of the above-mentioned transmission device.

20. Method of transmitting and receiving signals containing a transmission method, for transmitting signals in a system with multiple carrier based on the structure of the frame, and each frame contains at least two code sequences that are located next to each other in the direction of the frequency, and at least one code combination data, and the above-mentioned transfer method contains the following steps:
place the data signals and pilot signals in each of the aforementioned at least two code combinations of signals in a frame, and each code sequence has the same length, and place the data in the above-mentioned at least one combination data in the frame,
convert the mentioned code combination signals and the above-mentioned combination of data from the field frequency in the region of time to generate the signal transfer in the field of time and
transmit the said signal transfer in the field of time,
the above method further comprises a method for p made with the possibility of receiving the above-mentioned signal transmission in the field of time.



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: disclosed is a communication device which improves the throughput of a communication system by reducing the difference of transmission power between an SCCH and an SDCH so as to satisfy the required quality of a PAPR. In this device, an MCS selection unit (111) of a transmission unit (110) decides, with reference to a CQI lookup table, an MCS pattern (MCS 1) of the SDCH, an MCS pattern (MCS 2) of the SCCH and information (multiplex information) on multiplex positions on the time axes of those two channels, based on the CQI information. Based on the MCS 2 and the MCS 1, encoding modulation units (112 and 113) perform encoding and modulating operations. According to the multiplex information, a channel multiplexing unit (114) time-division multiplexes the SCCH and SDCH so as to generate a transmission signal.

EFFECT: fewer level fluctuation errors due to fading and guaranteeing the required SCCH quality.

4 cl, 15 dwg

FIELD: radio engineering, communication.

SUBSTANCE: digital device for generating spectrally efficient signals has an analogue-to-digital converter, the control input of which is connected to the output of a clock unit, a first multiplexer, a parallel register, an adder and a first control unit, a digital-to-analogue converter, two multiplexers, two serial-parallel multi-bit registers, second and third control units, a feedback control unit and a low-pass filter. Multi-bit signal outputs of the first multiplexer are connected to signal inputs of the first serial-parallel multi-bit register, having groups of multi-bit outputs. The register is connected to signal inputs of the second multiplexer, the control inputs of which are connected to outputs of the first control unit, and the outputs are connected to the first group of inputs of the adder, the outputs of which are connected to inputs of the parallel register. The clock unit is connected to the first serial-parallel multi-bit register, the first control unit, the parallel register, the digital-to-analogue converter and the input of the feedback control unit. The first output of the feedback control unit is connected to the control input of the parallel register, its second output is connected to the control input of the second serial-parallel multi-bit register, the third and fourth outputs are connected to inputs of the second and third control units, respectively. Outputs of the third control unit are connected to control inputs of the first multiplexer, the first signal inputs of which are connected to outputs of the analogue-to-digital converter, and the second signal inputs are connected to outputs of the third multiplexer, the groups of multi-bit signal inputs of which are connected to multi-bit outputs of the second serial-parallel multi-bit register. Inputs of the register are simultaneously connected to outputs of the parallel register, the second group of inputs of the adder and the inputs of the digital-to-analogue converter, and the output is connected to the input of the low-pass filter, the output of which is the output of the digital device for generating spectrally efficient signals.

EFFECT: high-speed operation when generating spectrally efficient signals, high security of transmitted information.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: described are systems and methods for processing information in a device operating in a wireless communication system. Methods are provided for in-phase and quadrature (I/Q) calibration, noise attenuation, calculating the signal-to-noise ratio (SNR) and rank.

EFFECT: high efficiency of a wireless station in case of deterioration of the wireless station or communication link.

50 cl, 17 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of detecting initial phase modulation of periodic sequence pulses is based on two-channel processing of input sequence pulses, wherein in each channel, each pulse of the input sequence is multiplied with the corresponding pulse of the reference sequence and the multiplication result is integrated, as well as on comparing output signals of channels, characterised by that the reference pulse sequence is generated by delaying input sequence pulses for the first channel by a time t=T, and for the second channel by a time t=0, where T is the repetition period of input sequence pulses, and initial phase modulation of the periodic sequence pulses is detected if the inequality Uout.1<Uout.2 is satisfied, where Uout.1, Uout.2 denote amplitude of output signals of the first and second channels, respectively, for any of two pulses of the sequence.

EFFECT: enabling detection of initial phase modulation of a pulse sequence.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: each frame comprises at least two structures of signals located next to each other in direction of frequency and at least two data structures, and the specified transmission device comprises: a signal display facility (57), made as capable of displaying signal data on carrier frequencies of each of the specified at least two signal structures in the frame, each signal structure has identical length, a data display facility (58, 58', 58") made as capable of data display onto carrier frequencies of the specified two data structures in the frame, a conversion facility (60) made as capable of conversion of the specified signal structures and specified data structures from the area of frequency into the area of time, in order to generate a transmission signal in the area of time, and a facility (61) of transmission made as capable of transmission of the specified transmission signal. This invention additionally relates to the appropriate method of transmission for a system with multiple carriers.

EFFECT: flexible tuning of a receiver for any required part of a common transmission bandwidth.

23 cl, 45 dwg, 22 tbl

FIELD: information technologies.

SUBSTANCE: signal is received, filtered and its amplitude is balanced, a reference signal is generated, and its correlation function is calculated with a received signal. Then the correlation function is integrated in series, and its value is fixed. A module of difference between values of correlation functions is calculated at different time intervals, and it is compared with a corrected threshold value, which is calculated by algebraic summation of a preset threshold value and a calculated deviation determined by the value of "one" or "zero" at the outlet of the demodulator. The threshold value is corrected at each stage of decision making depending on the ratio of "ones" and "zeros" in a demodulated signal.

EFFECT: higher noise immunity of the method of signal demodulation with relative phase modulation.

3 cl, 3 dwg

FIELD: information technologies.

SUBSTANCE: previously from digitised and quantised counts of reference RS, matrices of energy distribution are generated on the basis of their frame wavelet transformations. From them vectors of criteria are generated by means of line-by-line concatenation of all wavelet coefficients. Afterwards elements of criteria vectors are normalised and ranged. Each RS received for identification is broken into N fragments, for every of which vectors of criteria are formed in a similar manner. And as vectors of criteria of an RS received for identification, averaged values are selected for normalised and ranged vectors of criteria vectors of all N fragments. A decision on inclusion of a received RS to one of references of recognised classes is taken by results of comparison of its criteria vector with vectors of reference criteria.

EFFECT: higher probability of proper recognition due to reduction of influence of a primary signal determined with an information component at generated vectors of criteria.

7 dwg

FIELD: information technologies.

SUBSTANCE: communication device is proposed, which ensures enhancement of throughput capacity of a communication system by reduction of difference in transfer capacity between a scheduled control channel (SCCH) and a scheduled data channel (SDCH), so that by virtue of this the required quality of peak to average power ratio (PAPR) is met. In this device a unit (111) to select a transfer MCS unit (PO) makes a choice, referring to a reference table CQI, of a template (MCS 1) MCS at SDCH, a template (MCS 2) MCS at SCCH and information (information of multiplexing) on multiplexing positions on a time axis of such two channels based on CQI information. On the basis of MCS 2 and MCS 1, units (112 and 113) of coding and modulation perform operations of coding and modulation. According to information of multiplexing, a unit (114) of channel multiplexing multiplexes SCCH and SDCH with time division in order to thus generate a transfer signal.

EFFECT: reduction of level fluctuation errors specified by fading and guaranteeing the required quality of SCCH.

4 cl, 15 dwg

FIELD: electricity.

SUBSTANCE: signal is received and filtered; its amplitude is levelled against the preset level; Fourier window transformation matrix is shaped; for each value of coordinate on the time axis of the matrix shaped one determines the coordinate value on the frequency axis whereat the matrix in question every time possesses the maximum magnitude; from the matrix elements corresponding to the discovered frequency coordinate a vector of the signal being modulated is shaped for all coordinates on the time axis with such vector mean value calculated and assumed as the threshold magnitude; "1" or "0" value is assigned to the assumed information element following the results of mutual comparison of each value of the vector of the signal being modulated and the threshold magnitude; the duration of the least interval within the bounds whereof the vector of the signal being modulated has exceeded the threshold magnitude is selected as the demodulated symbol duration.

EFFECT: enhanced interference immunity of the method for demodulation of signals with relative phase modulation due to usage of properties conditioned by signals presentation in the form of Fourier window transformation 3D matrixes.

4 dwg

FIELD: information technology.

SUBSTANCE: invention can be used for compensation of frequency and phase shifts in multiple antenna system (MAS) with multiuser (MU) transmissions ("MU-MAS"). The method comprises steps in which: learning signal from each antenna of base station is transmitted to one of multiple wireless client devices, frequency shift compensation data is generated, frequency shift compensation data is received at base station, MU-MAS precoder weights are calculated based on frequency shift compensation data for presupression of frequency shift in transmitter, and multiple weights of precoder are calculated based on channel characteristic data.

EFFECT: increased throughput capacity of communication channels.

20 cl, 52 dwg

FIELD: information technology.

SUBSTANCE: intra prediction modes are coded in a bit stream. Brightness and chroma components can potentially have different prediction modes. For chroma components, there are 5 different modes defined in AVC: vertical, horizontal, DC, diagonal down right, and "same as brightness". Statistics show that the "same as brightness" mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarisation/codeword assignment for chroma intra mode signalling can be used for high efficiency video coding (HEVC), the next generation video coding standard.

EFFECT: high coding efficiency.

18 cl, 4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of generating codes for generating signal ensembles involves generating a source code of N≥4 elements, a number K≥1 of codes of N elements to be generated, as well as a target function for a set of L states of the code elements, and corresponding values of given signal parameters, characterised by an array of states of L×N×K peaks on N×K levels, connected by edges, wherein each of the L states is the initial state; generating codes; selecting a path with the extremum value of the target function, after which each generated code is assigned a symbol which corresponds to the edge of the path with the extremum value of the target function, and selecting 2≤M≤K codes with the maximum value of the ratio of the amplitude of the central peak of the autocorrelation function to the magnitude of the amplitude of the maximum lateral peak of the autocorrelation function and the minimum duration of the section of the autocorrelation function between the point of the maximum of the central peak and the point where the autocorrelation function becomes zero for the first time.

EFFECT: high jamming resistance of signals generated based on corresponding codes.

5 cl, 7 dwg

FIELD: radio engineering, communication.

SUBSTANCE: receiving apparatus, which corresponds to the digital television standard T.2, known as DVB-T2, is configured to perform low-density parity-check (LDPC) decoding for physical layer channels (PLC), which denote data streams, and layer 1 (L1), which represents physical layer transmission parameters. The receiving apparatus includes a LDPC decoding apparatus which is configured such that, when a LDPC encoded data signal and a LDPC encoded transmission control signal are transmitted multiplexed, said LDPC decoding apparatus decodes both the data signal and the transmission control signal. The receiving apparatus also includes a storage device configured to be placed in front of the LDPC decoding device and to store the transmission control signal when receiving the data signal and the transmission control signal.

EFFECT: enabling simultaneous reception of data and control signals using the same apparatus.

4 cl, 12 dwg

FIELD: radio engineering, communication.

SUBSTANCE: receiving apparatus, which corresponds to the digital television standard T.2, known as DVB-T2, is configured to perform low-density parity-check (LDPC) decoding for physical layer channels (PLC), which denote data streams, and layer 1 (L1), which represents physical layer transmission parameters. The receiving apparatus includes a LDPC decoding apparatus which is configured such that, when a LDPC encoded data signal and a LDPC encoded transmission control signal are transmitted multiplexed, said LDPC decoding apparatus decodes both the data signal and the transmission control signal. The receiving apparatus also includes a storage device configured to be placed in front of the LDPC decoding device and to store the transmission control signal when receiving the data signal and the transmission control signal.

EFFECT: enabling simultaneous reception of data and control signals using the same apparatus.

4 cl, 12 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of generating codes for generating signal ensembles involves generating a source code of N≥4 elements, a number K≥1 of codes of N elements to be generated, as well as a target function for a set of L states of the code elements, and corresponding values of given signal parameters, characterised by an array of states of L×N×K peaks on N×K levels, connected by edges, wherein each of the L states is the initial state; generating codes; selecting a path with the extremum value of the target function, after which each generated code is assigned a symbol which corresponds to the edge of the path with the extremum value of the target function, and selecting 2≤M≤K codes with the maximum value of the ratio of the amplitude of the central peak of the autocorrelation function to the magnitude of the amplitude of the maximum lateral peak of the autocorrelation function and the minimum duration of the section of the autocorrelation function between the point of the maximum of the central peak and the point where the autocorrelation function becomes zero for the first time.

EFFECT: high jamming resistance of signals generated based on corresponding codes.

5 cl, 7 dwg

FIELD: information technology.

SUBSTANCE: intra prediction modes are coded in a bit stream. Brightness and chroma components can potentially have different prediction modes. For chroma components, there are 5 different modes defined in AVC: vertical, horizontal, DC, diagonal down right, and "same as brightness". Statistics show that the "same as brightness" mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarisation/codeword assignment for chroma intra mode signalling can be used for high efficiency video coding (HEVC), the next generation video coding standard.

EFFECT: high coding efficiency.

18 cl, 4 dwg

FIELD: information technology.

SUBSTANCE: transmitting device comprises: means of generating frames, which is configured to arrange signal and pilot signal data in each of at least two signal code combinations in a frame, each signal code combination having the same length, and arrange data in said at least one code combination in a frame, a conversion means which is configured to convert said signal code combinations and said data code combinations from a frequency domain into a time domain to generate a time-domain transmission signal, and a transmitting means which is configured to transmit said time-domain transmission signal. Method is intended to be implemented by the given device.

EFFECT: enabling flexible tuning to the required portion of the transmission band and reduced content of service data.

20 cl, 15 dwg

FIELD: radio engineering, communication.

SUBSTANCE: apparatus for decoding block turbo codes has a first random-access memory unit 1, a second random-access memory unit 2, a third random-access memory unit 3, a SISO decoder 4, a decision unit 5, a first limiter 6, a read-only memory unit 7, a multiplier unit 8, a second limiter 9. The SISO decoder has a random-access memory unit 10, a clock generator 11, a switch 12, a counter 13, a read-only memory unit 14, a Walsh function coefficient signal former 15, an analysed sequence former 16, a first adder 17, a first subtractor unit 18, a doubling unit 19, a multiplier unit 20, a first divider unit 21, a second adder 22, a third adder 23, a second subtractor unit 24, a second divider unit 25, a third divider unit 26, a limiter 27.

EFFECT: high noise immunity of block turbo codes.

3 cl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of transmitting information bits includes a step of dividing the information bits to be transmitted into at least two groups. Further, according to the method, the information bits in each group to be transmitted are encoded to obtain at least two groups of encoded bits. Said at least two groups of encoded bits are combined to obtain a full sequence of encoded bits. The full sequence of encoded bits is obtained by dividing the encoded bits in each group into N subgroups and reordering said subgroups in each group of encoded bits. Subgroups in at least one group of the encoded bits are discontinuously distributed in the full sequence of encoded bits after reordering.

EFFECT: improved reception quality.

16 cl, 9 dwg, 2 tbl

FIELD: information technology.

SUBSTANCE: input signal is converted to spectral coefficients; the spectral coefficients are grouped into frequency bands and standards are estimated for each band as the average energy in the band; the spectrum is normalised based on the estimated standards; the standards are weighted based on psycho-acoustic properties of sound; bit distribution is calculated based on the weighted standards; the spectrum is quantised and encoded by the obtained number of bits; the method is characterised by that bit distribution is calculated based on a psycho-acoustic model built on quantised standards. Also disclosed is a device for implementing this method.

EFFECT: low level of distortions and easier encoding.

26 cl, 15 dwg

FIELD: radio engineering, communication.

SUBSTANCE: information 1 consisting of five pulses is encoded in form of a series of one positive pulse, two positive pulses, each magnified N times, one negative pulse magnified N times and one positive pulse, and an information 0 consisting of five pulses is encoded in form of a series of one negative pulse, two negative pulses, each magnified N times, one positive pulse magnified N times and one negative pulse, wherein N is a positive number greater than 1; the obtained sequences are transmitted to a data transmitting medium, and the received signal is compared with a reference signal by cross-correlation at the receiving side.

EFFECT: obtaining a clear signal with high level of interference and longer range of signal transmission.

2 cl, 5 dwg

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