Method and device for transmitting and receiving data using an antenna array in a mobile communication system

 

The proposed device and method of data transmission/reception using an antenna array in a mobile communication system. The node measures the transmission status for each transmitting antenna groups data to be transmitted according to the priority and passes on high-priority data through a transmitting antenna with a relatively good state transfer, and low-priority data to a transmitting antenna with a relatively poor state of the transmission. The technical result is the creation of a device transmission/reception data containing the antenna grid and the appropriate way to improve the overall performance of a mobile communication system. 4 N. and 22 C.p. f-crystals, 16 ill.

The technical field to which the invention relates.

The present invention relates generally to a device and method of transmitting/receiving data in a mobile communication system, the antenna containing the grating, and, in particular, to a method and apparatus of transmitting/receiving data in a mobile communication system containing the antenna grid antenna explode.

The level of technology

In General, the environment of the radio channel has a low reliability compared to the wire is rasprostranenie, changing over time, noise and interference. This prevents the increase in data transfer speed, and it was suggested many ways to overcome the limitations of radio. As main examples coding with protection from error to suppress the effects of signal distortion and noise, and antenna diversity to combat fading.

The codes used for encoding with protection from bugs, mostly are codes without memory and code memory. Codes without memory include linear block code, and the codes with memory include convolutional code and turbo code. Depending on the type of encoding with protection from bugs output signals of the encoder are divided into systematic bits (information bits) and parity bits. The main code used for separate withdrawal of systematic bits and parity bits, is a turbo code, though for separate withdrawal of systematic bits and parity bits is also used systematic convolutional code. In this case, the systematic bits are net user information, transferable, and parity bits are bits that are added to compensate for errors generated stew to packet errors in a systematic bits, or bits of parity. Batch errors frequently occur on the channel fading. To combat packet errors apply alternation, which is the process of distribution of invalid data.

In General, the transmitted bits are grouped into a transport block of a given size, which is an element of the input signal of the encoder at a high level. The encoder encodes the transport block, and outputs systematic bits and parity bits. Interleaver punctuates the sequence of coded bits according to the rule. The output signal of the interleaver is processed in accordance with the scheme of transfer, for example, multiple access, code-division multiplexing (mdcr), the multiplexing frequency division multiplexing (CDM) or orthogonal multiplexing frequency division multiplexing (OMCR). The received radio signal is transmitted via the antenna.

Antenna diversity is a way of dealing with a sinking due to the separate reception of multiple signals, each of which is experiencing a freeze. Technology diversity includes diversity time diversity frequency, multipath diversity and space diversity. The separation in time is carried out by the joint who, are different multipath fading. Multipath diversity is achieved by distinguishing multipath signals using different fading. Spatial diversity is implemented using antenna arrays at the transmitter or the receiver, or both, which provide spaced signals with mutually independent fading.

However, coding with protection from bugs and the spacing used on the radio will not fully meet the requirements of high-speed data services, such as Internet and multimedia, if not to improve the efficiency of frequency use. Therefore, to achieve high efficiency of frequency use were investigated mobile communication systems using antenna arrays.

To improve the efficiency of use of frequencies due to the spatial diversity in the composition of the transmitter/receiver includes an antenna array system that contains a set of antennas. Taking into account the limitations of time and frequency diversity, high-speed data transfer can be easily achieved by spatial diversity. In such a system, the antenna array ispolzuetsya independent information, system antenna arrays, in essence, represent a system with many inputs and many outputs (MVPS).

Due to the smallness of the correlation coefficients between channels established between the transmitting antennas and receiving antennas, increasing the efficiency of use of frequencies, and hence the throughput of the system using antenna arrays. To transfer information from each of the transmit antennas was carried out on separate channels, resulting in a user equipment (ON) could distinguish between the information received from different transmitting antennas, the correlation coefficients should be small. In other words, in order to identify the signal from each transmitting antenna, and thus, increase bandwidth, different signals must have different spatial characteristics. System antenna array suitable for the environment in which multipath signals have different spatial characteristics. In the environment of rectilinear propagation (ORS) system antenna array, which is also a system of multiple receiving/transmitting antennas are not as efficient as a system of one-stop-shop/pass is yenniku signal undergoes multiple scattering, in the resulting multipath signal, i.e., in an environment where the correlation coefficients between channels established between transmitting and receiving antennas, small, and, thus, it is possible to achieve effects explode.

Using the antenna grid in the receiver/transmitter, it is possible to increase the bandwidth. The bandwidth is determined based on whether or not the receiver/transmitter the channel information, which is transferred from the transmitter to the receiver. The bandwidth reaches a maximum when the transmitter and receiver share channel information, and minimum when neither one of them has no channel information. When channel information is received by only the receiver bandwidth is average, intermediate between the throughputs of the channel for vysheopisanym cases. To obtain the channel information, the transmitter estimates the channel state or receives feedback about the state of the channel from the receiver. Channel information, the system requires an antenna array represents the channel response between the transmitting antennas and receiving AIESEC provides increased bandwidth, proportional to the number of antennas available in the transmitter/receiver. However, if channel information is provided as feedback information, the increase in the number of antennas increases the amount of feedback information. Therefore, it is necessary to increase the bandwidth and reduce the amount of feedback information.

The above methods of increasing bandwidth used in the mobile communication system packet access high speed downlink (PDSN).

In Fig.2 depicts a block diagram of a transmitter of a mobile communication system PDSN. According Fig.2, the transmitter comprises a generator 40 tail bits, the channel encoder 42, block 44 matching of speeds, interleaver 46, the modulator 48, the controller 50, series-parallel (/PA) Converter 52 and the grid of the transmitting/receiving antennas 54, 56, 58 and 60.

The generator 40 tail bits adds tail bits to each of the N transport blocks. Channel encoder 42 encodes the transport blocks received from the generator 40 tail bits at a given coding rate, for example, 1/2 or 1/3, using the specified encoding method. Channel encoder 42 can be configured,you coming from the parent of the encoder, thereby maintaining the set speed encoding. In this case, the selection of one of the velocity encoding plays an important role and is carried out by the controller 50.

The block 44 of the speed agreement agree on the speed of encoded bits with the desired speed. Matching the velocities needed when the transport channels to be multiplexed or when the number of coded bits issued by the channel encoder 42 differs from the number of bits transmitted on the physical channel. Interleaver 46 punctuates consistent speed bits, and the modulator 48 modulates the output signal of the interleaver at a given modulation scheme. On/PA Converter 52 converts a sequence of modulated symbols received from the modulator 48, in a parallel sequence, suitable for multi-channel transmission. The converted parallel sequences are transmitted via the transmitting antennas 54, 56, 58 and 60.

The controller 50 controls the coding and modulation in accordance with the current state of the radio channel. In the mobile communication system PDSN controller 50 operates on adaptive modulation and coding (ASMC), selectively using the kVA is M Although it is not shown in Fig.2, the mobile communication system mdcr uses Walsh codes (U) for drainage and noise reduction (pseudosolenia) codes for the identification of the sending Node (the base station (EU)).

The coded bits are issued by the channel encoder 42 can be divided into systematic bits and parity bits. Systematic bits and parity bits have different effects on the characteristics of the reception. If errors occur with the same frequency in the systematic bits and the bits parity errors systematic bits stronger influence on the overall characteristics of a mobile communication system, than errors parity bits. If, in General, supported the same frequency of occurrence of errors, but in bits parity occurs more errors than in the systematic bits, the receiver decodes rather than otherwise. The reason is that the systematic bits have a significant impact on the performance of the decoder and parity bits are added only to compensate for errors that occur during transmission of data.

Interleaver 46 punctuates systematic bits and parity bits, regardless of the priority levels. This means that the traditional transmitter mixes the systematic bits and parity bits, without distinguishing between them, and raspredeleniya the ability of any single antenna is small, errors in the systematic bits and the bits parity occur with approximately equal frequency, which may adversely affect the characteristics of the system as a whole. The characteristics of the system deteriorate to a greater extent than in the case when errors occur only in bits parity. Therefore, to improve overall system performance it is necessary to reduce the error rate of the systematic bits, taking into account the state of the transmission channel signal for each transmitting antenna.

The invention

So, the first objective of the present invention is to provide a device of transmission/reception data containing the antenna grid and the appropriate way to improve the overall performance of a mobile communication system.

The second objective of the present invention is to provide a new device and method of transmitting/receiving data to improve the reliability of reception in a mobile communication system containing the antenna array.

A third objective of the present invention is to provide a device and method of transmit/receive bits/symbol data with a higher priority level via the antenna with a good channel state, and bits/symbol data with a lower priority level, through ava and method of transmitting/receiving data, providing for the division of all data transmitted on different groups of transmitted data in accordance with the types of services or the types of data and the distribution of different groups of data transmitted antennas with different States of the channel.

The fifth objective of the present invention is to provide a device and method of transmitting/receiving data bits that are more significant for the receiver, such as systematic bits, via the antenna with a good channel state, and data bits that are less significant for the receiver, such as parity bits, via the antenna to the poor condition of the channel.

The sixth objective of the present invention is to provide a device and method for determining, for each transmitting antenna of the antenna array, the data type allocated to a transmitting antenna, in accordance with the allocated her power.

The seventh objective of the present invention is to provide a device and method of transmitting data group containing a greater number of data bits that are more significant for the receiver, such as systematic bits, via the antenna with a good channel state, when in the process of transferring data bits, more meaningful for the receiver are multiplexed with data bits less significant for the receiver, e.g. is plexitube separate systematic bits with bits parity before the transfer, if the number of systematic bits exceeds the number of parity bits.

The ninth objective of the present invention is to provide a device and method for simultaneous transmission of at least two systematic bits and parity bits using a combined transmitting/receiving antennas.

The tenth objective of the present invention is to provide a device and method of coupling the transmit antennas in the mode space-time diversity transmission (PVRP), which provide data with higher priority encoded by the encoder PVC, a couple of antennas with good upload and transfer data with a lower priority encoded by the encoder PVC, a couple of antennas to the poor condition of the transfer.

The eleventh objective of the present invention is to provide a device and method for separation of encoded bits on a systematic bits and parity bits, separate alternation and transfer perenesennyj bits through different antennas, in the case of transfer of the totality of systematic bits and a group of parity bits.

The twelfth objective of the present invention is to provide a device and method of interleave data on different the of is creating device and data transmission method, in which data to be transferred through any transmitting antenna is modulated independently using a given modulation scheme when transmitting data with different priority levels via different transmit antennas.

To solve the above and other tasks provided by the apparatus and method of transmitting/receiving data using an antenna array in a mobile communication system. According to one aspect of the present invention, the Node measures the transmission status for each transmitting antenna groups transmitted data in accordance with priority and passes on high-priority data through a transmitting antenna with a relatively good state transfer, and low-priority data to a transmitting antenna with a relatively poor state of the transfer.

According to another aspect of the present invention, the Node measures the transmission status for each transmitting antenna and passes on information about the status of the transmission is installed between the channels. Thus, the Node In and share information about the transmitted data allocated to each transmitting antenna.

According to another aspect of the present invention FOR measuring the channel status, on to what atom the Node transmits data with different priority levels via different transmit antennas in accordance with the feedback.

According to another aspect of the present invention FOR transmitting Site To the feedback about the transmission status for each transmitting antenna of the EU. Then, the Node distributes the transmitting antenna data with different priority levels and transmits the information about the data transmission to the mobile station (MS).

Brief description of drawings

The above and other objectives, features and advantages of the present invention are explained in the following detailed description in conjunction with the attached drawings, on which:

Fig.1 is a block diagram of a typical mobile communication system containing a transmitting/receiving antenna array;

Fig.2 is a block diagram of the transmitter of the traditional mobile communication system containing the antenna array;

Fig.3 is a block diagram of a transmitter of a mobile communication system according to the first variant implementation of the present invention;

Fig.4 is a detailed block diagram of the interleaver shown in Fig.3;

Fig.5 is a detailed block diagram of the modulator shown in Fig.3;

Fig.6 is a block diagram of a receiver corresponding to the transmitter shown in Fig.3;

Fig.7 is a detailed block diagram of the demodulator shown in Fig.6;

Fig.8 is a detailed block diagram of the reverse permeating, it is shown in Fig.3;

Fig.10 is a detailed block diagram of the data distribution unit shown in Fig.9;

Fig.11 is a block diagram of a transmitter of a mobile communication system according to the second variant of implementation of the present invention;

Fig.12 is a block diagram of a receiver corresponding to the transmitter shown in Fig.11;

Fig.13 is a block diagram of a transmitter of a mobile communication system according to the third variant of implementation of the present invention;

Fig.14 is a block diagram of a receiver corresponding to the transmitter shown in Fig.13;

Fig.15 is a block diagram of a transmitter of a mobile communication system according to the fourth variant of implementation of the present invention;

Fig.16 is a block diagram of a receiver corresponding to the transmitter shown in Fig.15.

A detailed description of the preferred embodiments

Preferred embodiments of the present invention is described below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail so as not to obscure the invention is inconsequential details.

The present invention provides embodiments of a method and device to improve the reliability of reception p is any for spatial diversity transmission. To improve the reception characteristics of all data transmitted over the air, and thus improve the system performance in General, the transmitter transmits more important data through the antenna from the good condition of the transmission, and the less important data through the antenna to the poor condition of the transmission. The importance of data, otherwise the priority of the data determined in accordance with the impact that these data have to receive data in the receiver. Thus, a higher priority is assigned to more influential data and lower priority is assigned to the less influential data when receiving data in General.

According videopokemon data to be transmitted are grouped into different data groups in accordance with the priority levels of the data. The priority of the data determined in accordance with the service type, data type and type impeller coded bits.

The determination of the priority level in accordance with the type of services performed in the case when simultaneously transmitted different services, such as service voice (voice) and data service. The data transmitted in the implementation of data services that require low error rate, included in the group data high is but a high frequency of occurrence of errors, included in the group of data with a low priority level.

Systematic bits included in the data group with the highest priority level, while the parity bits included in the group of data with a low priority level. This division corresponds to the definition of priority according to the type of impeller coded bits.

According Fig.1, a typical mobile communication system includes a Host 10, and the sum (k) 20, 22 and 24. According to the present invention and the Node B, and contain a set of spatially separated transmitting/receiving antennas. Transmitting/receiving antenna together form an antenna array. Thus, the Node transmits the data through the transmitting antenna grid, and receives the data via the receiving antenna array. For such data, the Node b determines the priority level of the data to be transmitted through each transmitting antenna, and also determines the state of the broadcast for each transmitting antenna in accordance with the measurement condition of the transmission performed by the Node B, or in accordance with the feedback on the state of transmission received from MS. State radio is equivalent to transmission reliability. The node distributes sovokupnogo transmitting antennas. In particular, the Node distributes the data group with the highest priority level of the transmitting antenna with good transmission status, and group data with low priority transmit antenna to the poor condition of the transfer.

State radio transmitting antennas can be defined in different ways. According to one variant of implementation, the Node measures the transmission status for each transmitting antenna and distributes group data transmitting antennas in accordance with the results of measurements of the States of the transmission. According to another variant of implementation measures of channels established between the software and the Node B, and sends information about the status of transmission back to the BS.

According to the present invention, the transferred data are grouped into so many groups of data, as there are transmit antennas, and the data groups are distributed transmitting antennas on a variable basis in accordance with their conditions of transfer. At that time, as the traditional mobile communication system transmits more meaningful data and less important data, in the sense of performance, without distinguishing between them, i.e., not evaluating the priority of data transmitted, which increases the probability of losing more znachimyh system performance and bandwidth.

According to the above four options for the implementation of the priority data is determined in accordance with types of the encoded data, i.e., systematic bits or parity bits. The node At the impeller encodes data to be transmitted and groups coded bits according to different data groups depending on the degree of their influence on the characteristics of the reception. Data groups one-to-one distributed transmitting antennas in accordance with the States of the transmission antennas.

If speed is a high priority data and low priority data differ from the overall speed of transmitted data, one group of data is multiplexed with other data group having a different priority level, and the multiplexed data is transmitted through the transmitting antenna. In this case, the data group that contains relatively more high priority data is supplied to the transmitting antenna with good communication state. According videopokemon depending on the transmission status of each transmission antenna and transmits whether a Node is In on information on the allocation of transmit antennas, offers four options for implementing the present invention.

For ease of description of the present isobune 1/2 or 3/4, and the modulator supports, in whole or in part, the modulation format of the FMC, FM, CAM and CAM (see table).

When the encoding speed is equal to 1/2, channel encoder, receiving one bit, and outputs the two encoded bits. In this case, one of the two coded bits is the systematic bit representing pure user data, and the other is parity. If the encoding speed is equal to 3/4, the channel encoder having three bits, and outputs the four coded bits. Three of the four coded bits are systematic bits and one parity.

According videopokemon the present invention relates to a mobile communication system that uses antenna array, i.e., the transmitting antenna array. The transmitting antenna array transmits data transmitted frame through a set of transmit antennas. Because the data from each transmit antenna are transmitted over a separate radio channel, transmitting antennas have different transfer status. In the case of two transmitting antennas, their pattern of state transfer is expressed in the form [V, N] or Vice versa. In the case of four antennas, their pattern of state transfer is expressed in the form [b, C, S, N], is their transmission, “C” denotes the average transmission status, and “H” indicates a bad (or Low level) transmission status. Good condition transmission or high transmission reliability is equivalent to the low frequency of occurrence of errors. The letter “x” in the template indicates the transmission status, too bad for data transfer. Figures 1, 2, 3, 4 indicate the relative order of the States of the transmission. Regardless of whether the template is expressed state transfer letters b, C and H, or 1, 2, 3 and 4 transmit antennas with the best two-state transmission transmit the systematic bits and the other two transmitting antennas transmit parity bits. Thus, more meaningful data (e.g., systematic bits or bits of information management) are allocated to a transmitting antenna with a good communication state, and the less important data (e.g., parity bits) transmit antenna with the worst transmission. Thus, the characteristics of the system are increased.

For example, if the encoding speed is equal to 1/2, the systematic bits and parity bits are generated with the same speed and pattern of state transfer is expressed as [V, x, x, N], the systematic bits are transmitted via the transmitting antenna with the state of the plumage is nnu with transmission status “H” (hereinafter, we will call her “H-transmitting antenna”). The transmitter can use the same schema channel alternation and modulation to the data in one data group. The receiver may use different schemas channel alternation and different modulation schemes, if he knows schema channel alternation and modulation used in the transmitter.

If the encoding speed is equal to 3/4, then the input of the three input data bits, generated three stream of systematic bits, one for each of the systematic bits and one parity bit stream. When the template States transmission for four transmit antennas is expressed as [b, C, S, N], the three streams of information bits transmitted through one-peredayuschuyu antenna and two transmit antennas. The parity bit stream is passed through one N-transmitting antenna.

Even when the number of transmitting antennas streams of information bits and the parity bit streams are distributed by the transmitting antennas according to their state transfer.

In the mobile communications system conforming to the present invention, the channel encoder, the demodulator and the evaluation unit channels and distribution transmitting antennas generate transmitted data and define the data for each is provided with a degree of influence on the characteristics of the receiving environment of the radio channel, and the reception antenna array in receiving data transmitted from a transmitting antenna array. When the transmission status of each transmission antenna is measured by the Node b or MC. In the latter case, transmits to the Node b on channel uplink communication information feedback about the upload.

The node b determines the transmission status for each transmitting antenna based on their measurements or feedback information. The order States the transmission is a measure of the distribution of groups of data transmitting antennas. When transferring groups of data the Node transmits a common pilot signal channel together with the data in the software that allows to distinguish between transmitting antennas.

When transmitting Node In the feedback on the procedure of transmitting antennas in accordance with their state of the transmission, the Node b determines the transmission status of each transmission antenna based on the feedback information, and distributes the code symbols of the next frame transmitting antennas. Because, gave feedback, it can distinguish between code bits of the next frame in accordance with their transmitting antennas. This allows you to multiplex and decode the signals pass from the t implementation

According to the first variant implementation of the present invention, the transmitter determines the communication status of each transmitting antenna of the transmitting antenna array and transmits data in accordance with the conditions of the transfer. The receiver determines the reception state of each receiving antenna receiving antenna array and receives data in accordance with the conditions of admission.

To accomplish the above operations mobile telecommunications system must have the appropriate configuration and operation is as follows.

1. Measured transmission status for each transmitting antenna of the transmitting antenna array and generates the management information corresponding to the States of the transmission.

2. Transmitting antennas are divided into groups of data according to priority, and group data are distributed by the transmitting antennas in accordance with the management information.

3. The status of each channel downlink is measured using the received signal, and the signal passed through each receiving antenna receiving antenna array, is restored in accordance with the measurement condition of the transfer.

According to this variant implementation in the system of multiple access frequency division multiple access (FDMA equipment) Node measures the channel status uplink communication and predicts the status of the channels of the downlink on the basis of the States of the channels of upward communication line.

Further description of the first variant implementation of the present invention described with reference to Fig.3-10.

1.1 Transmitter

In Fig.3 depicts a block diagram of a transmitter of a mobile communication system according to the first variant implementation of the present invention. First, we describe the components that are common to all embodiments. According Fig.3 Site 10 measures the transmission condition of the transmission antennas 90, 92, 94 and 96 of the transmitting antenna array by a method defined in the common air interface (CAI, ARI).

Channel coder takes 80 N transport blocks, encodes the data at a given coding rate set by the controller 86, and outputs systematic bits S and parity bits R. If the encoding speed is equal to 1/2, the channel encoder 80 outputs systematic bits S and parity bits P in the one-to-one. If the encoding speed is equal to 3/4, the systematic bits S and parity bits P are shown in relation to three to one.

Interleaver 82 punctuates the systematic bits S and parity bits P separately. This configuration of the interleaver 82, in which he contains a set of internal premaritally. When using a single interleaver 82 first alternate, systematic is possible parity bits P, at the time interleave the systematic bits s When using the totality of premaritally can independently enforce systematic bits S and parity bits R.

The modulator 84 modulates the output signal of the interleaver at a given modulation scheme. The systematic bits S bits and the parity P it is possible to apply the same or different modulation schemes. For example, peremerzanie systematic bits S and parity bits P can be modulated by the method of the FMC or, alternatively, to modulate peremerzanie systematic bits S and parity bits P methods FMC and CAM respectively. Modulation symbols obtained by the modulation of the systematic bits S and parity bits P, will refer to the systematic modulation symbols and the modulation symbols parity, respectively. Block 88 evaluation of channels and distribution transmitting antennas assesses the state of transmission of transmission channels established in accordance with the respective transmitting antennas 90, 92, 94 and 96. When using duplex mode with time division transmission status can be assessed by measuring the state of the respective receiving channels.

Block 88 evaluation of channels and distribution transmitting antennas reports information N costantin groups systematic modulation symbols S and the modulation symbols of the parity P in the data groups, the respective transmitting antennas 90, 92, 94 and 96, and spreads the modulation symbols in the data groups on the respective transmitting antennas under control of the controller 86. For example, if the first and second transmitting antennas 90 and 92 have a good transmission condition, and the third and fourth transmitting antenna 94 and 96 have a bad transmission condition, the unit 88 evaluation of channels and distribution transmitting antennas distributes the data group containing the systematic modulation symbols S, the first and second transmitting antennas 90 and 92, and the data group containing the modulation symbols of parity P, the third and fourth transmitting antennas 94 and 96.

The controller 86 controls the block 88 evaluation of channels and distribution transmitting antennas for proper distribution of the data groups corresponding transmission antennas on the basis of information N state transfer.

But, as described above, the block 88 evaluation of channels and distribution transmitting antennas distributes data transmission in accordance with the priority, you can also provide the ability to group data before modulation or to interleave.

As part of the transmitter may provide the block matching of speeds, not shown in the and coded bits.

If the grouping of data is performed after encoding or alternation, the modulator 84 modulates the data in accordance with data groups. In this case, the data groups, you can apply the same or different modulation schemes. Block 88 evaluation of channels and distribution transmitting antennas just spreads the modulation symbols in the data groups on the respective transmitting antennas under control of the controller 86.

In Fig.4 depicts a block diagram of the interleaver 82 that contains a set of internal premaritally. The stream of the systematic bits and the parity bit stream, separately issued by the channel encoder, enter the internal premarital 82-2 and 82-4, respectively, for separate alternations.

According Fig.4, the first and second premarital 82-2 and 82-4 alternating stream of the systematic bits and the parity bit stream, respectively, according to the patterns of alternation, set by the controller. Thus, peremerzanie the stream of the systematic bits and the parity bit stream separately fed to the input of the modulator 84.

However, if the coded bits are grouped into groups of data to interleave should be using the new interleaver. This means that you need to ensure Peremogi the transmitting antennas. After independent interleave each group of data interleaver distributes peremerzanie bits on respective transmission antennas. For disjoint alternation of groups of data, you can use the same template alternation or different patterns of alternation. The pattern or patterns of alternation agreed in advance between the transmitter and the receiver.

In Fig.5 depicts a block diagram of the modulator 88 containing a set of internal modulators. Peremerzanie flows systematic bits and parity bits, separately issued by the interleaver 82, proceed to the internal modulators 84-2 and 84-4 respectively for separate modulation. Modulators 84-2 and 84-4 can use the same modulation scheme or different modulation schemes. You can also sequentially modulate peremerzanie flows systematic bits and parity bits using a single modulator.

According Fig.5, the first and second modulators 84-2 and 84-4 modulate peremerzanie flows systematic bits and parity bits respectively in predetermined modulation set by the controller 86. Thus, the systematic modulation symbols and the modulation symbols parity separately do n what is to interleave or to modulation, you need to use the new modulator. This means that you need to provide a modulator for each group of data or to perform modulation using a single modulator as many times as there are transmit antennas. After independent modulation of each group of data modulator spreads the modulation symbols for the respective transmission antennas.

In Fig.9 shows a detailed block diagram of block 88 evaluation of channels and distribution transmitting antennas, shown in Fig.3. According Fig.9 unit 120 group data distributes the systematic modulation symbols and the modulation symbols parity, separately received from the modulator 84, the data groups in the number equal to the number of transmitting antennas, in accordance with the priority levels of modulation symbols, and then determines the order of the data groups for the distribution of groups of data transmitting antennas 90, 92, 94 and 96 in accordance with their conditions of transfer. Thus, the block 120 group data outputs data in the form of groups of data, namely data groups from the first to the fourth in order of decreasing priority.

Unit 122 of the data distribution one-to-one displays group data transmitting antennas 90, 92, 94 and 96 in accordance the ACI is supplied from the controller 86. Data group with a higher priority is displayed to the transmitting antenna with the best transmission status, and the data group with a lower priority level is displayed to the transmitting antenna with the worst transmission.

In Fig.10 depicts a detailed block diagram of block 122, the data distribution shown in Fig.9. According Fig.10 four switch 142, 144, 146 and 148 are taking four groups of data, the priority levels are determined by the block 120 group data. Each of the switches 142, 144, 146 and 148 has one input port and four output ports. Output ports of each switch is connected to four antennas 90, 92, 94 and 96. The switches 142, 144, 146 and 148 of the switch group data to the appropriate antenna in accordance with the management information corresponding to the States of the transmission antennas, received from the controller 86. Each switch can do one or the other management information. Therefore, switch, host a group of high-priority data, switches the data to the transmitting antenna with good condition, and the switch, receiving the group of data with low priority, switches the data to the transmitting antenna to the poor condition. For the filing group is zobrazen block diagram of the receiver, corresponding to the transmitter shown in Fig.3. According Fig.6 the data transmitted via the transmitting antennas 90, 92, 94 and 96, are accepted in the receiver after receiving antennas 100, 102, 104, and 106. Received signals are received at block 108 evaluation of channels and grouping data. Unit 108 estimates the channels and grouping data assesses the state of the transmission channel downlink, the respective reception antennas 100, 102, 104, and 106, and transmits the information N-state transmission controller 112. Unit 108 estimates the channels and grouping data also groups received signals in accordance with data groups which are mapped to the transmission antennas in the transmitter multiplexes the data group and outputs the high-priority modulation symbols and a lower modulation symbols. High-priority modulation symbols and a lower modulation symbols represent the systematic modulation symbols and the modulation symbols parity, respectively.

The demodulator 10 separately demodulates the systematic modulation symbols and the modulation symbols of parity in the demodulation scheme, savemail controller 112 in accordance with the modulation scheme used in the am parity the same demodulation scheme or different demodulation schemes, depending on whether the modulator of the transmitter is the same or different modulation schemes.

Reverse interleaver 114 separately performs the inverse interleaving the systematic bits and parity bits obtained from the demodulator 110 in the pattern of alternation, received from the controller 112. The controller 112 knows the pattern of alternation, which uses the interleaver of the transmitter. The pattern of alternation is standard or transmitted to the receiver as a system to transfer data.

Finally, the channel decoder 116 decodes the streams back perenesennyj systematic bits and parity bits specified by the decoding method corresponding to the method of encoding on the transmitter.

In Fig.7 depicts a detailed block diagram of the demodulator 110, shown in Fig.6, contains a set of internal demodulators. The demodulator 110 distributes internal demodulators 110-2 and 110-4 systematic modulation the modulation symbols and the parity symbols, which were divided according to their priority levels in block 108 evaluation of channels and grouping data. Therefore, the demodulators 110-2 and 110-4 can use the same demodulation scheme or different demodulation scheme. The alternative is therefore using a single demodulator. The first and second demodulators 110-2 and 110-4 demodulator systematic modulation symbols and the modulation symbols parity, coming from block 108 evaluation of channels and grouping data using one method, demodulation, or by using different methods demodulation in accordance with the method of demodulation performed in the transmitter, under control of controller 112. Thus, demodulated streams systematic information bits and demodulated streams of parity bits separately, proceed in the reverse interleaver 114.

In Fig.8 shows a detailed block diagram of the reverse interleaver 114, shown in Fig.6, which performs the inverse interleaving collectively coded bit streams coming from the demodulator 110, using the internal feedback premaritally 114-2 and 114-4. This means that the first and second reverse premarital 114-2 and 114-4 perform reverse interleaving of streams of data bits and parity, respectively, according to the patterns of alternation, agreed in advance between the transmitter and the receiver.

2. The second option exercise

According to the second variant of implementation, the Node b determines the transmission status for each transmitting antenna to innovatica information state transfer. The transfer status is determined in the same manner as in the first embodiment of the present invention.

In Fig.11 depicts a block diagram of a transmitter of a mobile communication system according to the second variant of implementation of the present invention. According Fig.11 transmitter is a radio transmitter 258 information state transfer, in addition to the components of the transmitter shown in Fig.3. The transmitter 258 information States transmission transmits the information of the States of the transmission for each transmitting antenna, received from the controller 246, via transmitting antennas 250, 252, 254 and 256.

In Fig.12 depicts a block diagram of a receiver corresponding to the transmitter shown in Fig.11. According Fig.12, the receiver comprises a receiver 270 information state transfer, in addition to the components of the receiver shown in Fig.6. The receiver 270 information state transfer displays the transfer status for each transmitting antenna, obtained from block 272 group data, the controller 276. The controller 276 controls the block 272 group data to generate two groups of modulation symbols to be input to the modulator 274, in accordance with the information of the States of the transmission.

3. A third option exercise

According t the Institute of communication received through the receiving antenna of the antenna array, and sends the information of state transfer back to the BS, which allows the Node and MC share information with state transfer.

In Fig.13 depicts a block diagram of a transmitter of a mobile communication system according to the third variant of implementation of the present invention. According Fig.13 block 308 evaluation of channels and distribution transmitting antennas receives N feedback about the status of transmission of the transmitting antennas 312, 314, 316 and 318 of the transmitting antenna array from each. The receiver 310 feedback information displays information N States transmission to the controller 306. The controller 306 controls the block 308 distribution of transmitting antennas, ensuring proper distribution of groups of data transmitting antennas 312, 314, 316 and 318 in accordance with the information N state transfer.

In Fig.14 depicts a block diagram of a receiver corresponding to the transmitter shown in Fig.13. According Fig.14 block 332 evaluation of channels and grouping data assesses the state of the transmission channel downlink, the respective reception antennas 320, 322, 324, and 326 receiving antenna array. Generator 328 feedback information, generates information of the reverse light is eredeti 330 channel feedback information, converts the feedback information in the appropriate format and sends it to BS.

According Fig.13 and 14 during the operation unit 332 evaluation of channels and grouping data generates channel information H from the signals received through the reception antennas 320, 322, 324, and 326 in (20, 22, or 24 in Fig.1). Using channel information H, the generator 328 feedback information, calculates the transmit power that the transmitter can allocate each of the transmit antennas 312, 314, 316 and 318, generates the management information with which the transmitter distributes the data transmitting antennas 312, 314, 316 and 318, and outputs the management information as feedback information to the transmitter 330 channel feedback information. The transmitter 330 channel feedback information, transmits information feedback in an appropriate format to the transmitter.

The transmitter in the Node receives the signal from 20, 22, or 24 via the transmitting antennas 312, 314, 316 and 318. Block 308 evaluation of channels and distribution transmitting antennas assesses the state of transmission antennas by using the input signal. The receiver 310 of the feedback information, extracts feedback information indicating a transmission status for each transmitting antenna, using the input signal and the information of the States of the transmission, pawlow and distribution of transmitting antennas in accordance with the feedback for the distribution of groups of data transmitting antennas 312, 314, 316 and 318.

Now we describe the measurement of characteristics of channels downlink carried out in accordance with the third variant of implementation of the present invention.

ON receiving characteristics of the HNLchannels downlink

Characteristics of HNLchannels downlink measured by block 332 evaluation of channels and grouping data and enter the generator 328 feedback information. Generator 328 feedback information, generates feedback information indicating the state of each transmitting antenna for the transmitter. In this case, the transmitting/receiving side of the system containing the antenna grid can be modeled as

wheredenotes convolution, and Y(t), X(t) and N(t) denote the vector of additive white Gaussian noise (abgs). In this case, Y(t)=(y1(t) y2(t) ... YmR(t))’ and X(t)=(x1(t) x2(t) ... XmR(t))’.

When this generator 328 feedback information, calculates the transmission power of each transmitting antenna by the method of “water drain”, to generate feedback information. This means that peredatchika. The above operation allows you to convert a system with multiple inputs and multiple outputs (MVPS) into a set of equivalent systems with one input and one output (OWOW) through a linear transformation. The present invention provides a conversion system MVPS in the set of systems OWOW and calculating the transmission power of each antenna. Received transmission status of each transmission antenna is used to determine which groups should be distributed which a transmitting antenna 312, 314, 316 and 318.

To this end, decompose on special values (ROSES) to convert the system MVPS on system OWOW

where U and V are degenerate (singular) matrix, and D is a matrix whose elements are all equal to zero except the diagonal. As for degenerate matrix always exists the inverse matrix of the channel MVPS is divided into channels OVOV in the amount equal to the smaller of the number of transmitting antennas and the number of receiving antennas, by multiplying each of the transmitting and receiving sides of the V and UHrespectively. So

where the diagonal elements of the matrix D avoi abgs. This operation generates system AVOW, and the bandwidth of the system MVPS equal to the sum of the individual throughput systems OWOW, which can be calculated as

where1,2,... ,n,mspecial value of NHNk- transmit power available for each transmitting antenna, and n and m indicate the number of transmitting antennas 312, 314, 316 and 318 and the number of receiving antennas 320, 322, 324 and 326, respectively. The number of special values is equal to the smaller of the quantities of transmitting antennas and receiving antennas, and generates so much power values of the transmission, as there are special values. Channel bandwidth for data channels in the system, the antenna array is maximized by the method of “water drain”, namely

Equation (6) has meaning only ifk&;0otherwise distribute the transmit power is equal to 0. In this case,4. The fourth option exercise

According to the fourth variant of implementation of the present invention the transmitter and receiver to determine the channel status downlink installed in accordance with the transmitting antennas of the transmitting antenna array. Thus, it is possible to transmit the information of the States of the transmission from the transmitter to the receiver and Vice versa. In this sense, the fourth option exercise combines the second and third options implementation.

In Fig.15 depicts a block diagram of the transmitter of the mobile communications system conforming to the fourth variant of implementation of the present invention. According Fig.15 transmitter is a radio transmitter 372 information is ogino third variant implementation, that allows the Node to transmit/receive information to state transfer to/from.

According Fig.15 the Node divides the transmitted data into a set of groups of data by priority according to the number of transmitting antennas 374, 376, 378 and 380 and distributes group data transmitting antennas. The node receives feedback information indicating the transmission status of the transmission antennas 374, 376, 378 and 380, from 20-24. Feedback comes in block 368 valuation of channels and distribution of transmitting antennas. The receiver 370 feedback information, extracts feedback information using the channel information and the input signals received from the block 368 valuation of channels and distribution of transmitting antennas. The controller 366 controls the block 368 valuation of channels and distribution of transmitting antennas based on feedback information, to distribute groups of data transmitting antennas 374, 376, 378 and 380. The transmitter 372 information state transfer in the 20-24 management information that is used to distribute groups of data.

In Fig.16 depicts a block diagram of a receiver corresponding to the transmitter shown in Fig.15. According Fig.16 the receiver comprises a receiver 394 information state transfer, anal is anal feedback information, similarly, the third variant of implementation. Thus, the receiver can receive/transmit information States transmission from Node/to Node C.

According Fig.16 to 20, 22, or 24 receives signals via the receiving antenna 380, 382, 384 and 386 receiving antenna array. Block 388 valuation of channels and grouping data assesses the status of the channels defined by the Node 10. Generator 390 generates feedback information feedback information indicating the transmission status of each transmission antenna, using the information of the evaluation channels received from block 388 valuation of channels and grouping data in the same manner as in the third embodiment. The transmitter 392 channel feedback information, transmits feedback information in a specified format in the Node 10.

The receiver 394 information state transfer retrieves the management information is used to determine the transmission status of each transmission antenna in the Node after the previous session feedback from the input signal and channel information received from block 388 valuation of channels and grouping data. The controller 398 group the data by transmitting antennas, comparing the management information with information previous CEA is Ormat for demodulator 306 under the control of the controller 398.

According Fig.15 and 16 during operation BY measuring the channel status established with Node 10, in block 388 valuation of channels and grouping data. Thus generates the management information on the basis of measurements of the States of the transmission using a generator 390 feedback information. The management information is fed back to the Node via the transmitter 392 channel feedback information.

The node 10 retrieves information feedback provided by the receiver 370 feedback information. The controller 366 determines the order of the States of the transmission of the transmit antennas according to the feedback information. The order of the States of the transmission is used to distribute data transmitting antennas 374, 376, 378 and 380. The node 10 transmits the management information is used to distribute the transmitted data transmitting antennas 374, 376, 378 and 380, ON 20-24 through the transmitter 372 information state transfer. ON 20-24 use the management information is downloaded from the Host 10, for grouping the received data in the data group to be displayed on the transmitting antenna 374, 376, 378, 380.

According to the present invention in a mobile communication system containing the antenna grid, high-priority data is distributed transmission ante protection against errors, modulation/demodulation and data. Thus, the frequency of occurrence of bit errors (hospital has no facilities) is reduced, and system performance improved. The present invention is applicable to all the transmitters and receivers both Wi-Fi and wired communication, and, in particular, its application in mobile communication systems of the third generation (IMT-2000) will increase the performance of the system as a whole.

Although the invention has been described and illustrated with reference to some preferred variants of its implementation, the experts in this field can offer various changes regarding the form and detail, without going beyond the nature and scope of the invention defined in the attached claims.

Claims

1. A method of transferring data from a transmitter having a first set of antennas, the receiver having a second set of antennas, according to numerous radio channels in a mobile communication system, namely, that determine the state of the radio group transmitted data in the data groups in accordance with the priority level and transmit high-priority data via the first antenna, having a relatively good channel status, and low is .1, characterized in that the radio channels are channels downlink.

3. The method according to p. 1, characterized in that the transmitter determines the state of the radio channel, and transmits the state information of the channels in the receiver.

4. The method according to p. 1, characterized in that the receiver determines the state of the radio channel, and transmits the state information of the channels back to the transmitter.

5. The method according to p. 1, characterized in that it further grouped data received through the second antenna, in accordance with the States of the channels and demodulator grouped data in the receiver.

6. The method according to p. 1, wherein the high priority data is a systematic encoded bits and the low priority data are encoded parity bits.

7. A device for transmitting data from the transmitter containing the first set of antennas at the receiver, containing the second set of antennas, according to numerous radio channels in a mobile communication system, containing the evaluation unit of the channels to define the States of multiple radio channels, means for grouping the transmitted data in the data groups in accordance with the priority level and the distribution unit transmitting antennas, and low-priority data via the first antenna having a relatively poor channel status.

8. The device according to p. 7, characterized in that the radio channels are channels downlink.

9. The device according to p. 7, characterized in that it further comprises a transmitter of information States for the transmission of the status information of the channels in the receiver.

10. The device according to p. 7, characterized in that it further comprises an information receiver status transmission reception of the status information of the channels from the receiver.

11. The device according to p. 7, wherein the high priority data is a systematic encoded bits and the low priority data are encoded parity bits.

12. The device according to p. 7, characterized in that it further comprises an interleaver for separate interleave high priority data and low priority data.

13. The device according to p. 12, characterized in that it further comprises a modulator for separate modulation perenesennyj high-priority data and perenesennyj low-priority data.

14. The device according to p. 13, wherein the modulator modulates peremerzanie priority MSC, containing the second set of antennas from a transmitter containing a first set of antennas, according to numerous radio channels in a mobile communication system, namely, that determine the state of the radio group and high-priority data and low priority data received through the second antenna, in accordance with the States of the channels and demodulator high priority data and low priority data.

16. The method according to p. 15, characterized in that the radio channels are channels downlink.

17. The method according to p. 15, wherein the transmitter determines the state of the radio channel, and transmits the state information of the channels in the receiver.

18. The method according to p. 15, wherein the receiver determines the state of the radio channel, and transmits the state information of the channels back to the transmitter.

19. The method according to p. 15, wherein the high priority data is a systematic encoded bits and the low priority data are encoded parity bits.

20. A device for receiving data in a receiver containing a second set of antennas from a transmitter containing a first set of antennas, according to numerous radio stations in cicenia transmitting antennas to group high-priority data and low priority data, received through the second antenna, in accordance with the States of the channels and the demodulator to separate demodulation of high priority data and low priority data.

21. The device according to p. 20, characterized in that the radio channels are channels downlink.

22. The device according to p. 20, characterized in that it further comprises a generator feedback information to generate feedback information that indicates the status of the channels in a specified format and transmitter channel information feedback device for sending feedback information to the transmitter.

23. The device according to p. 20, characterized in that it further comprises an information receiver status transmission reception of the status information of the channels from the transmitter.

24. The device according to p. 20, wherein the high priority data is a systematic encoded bits and the low priority data are encoded parity bits.

25. The device according to p. 20, characterized in that it further comprises a reverse interleaver to separate reverse alternation of high priority data and low priority data.

26. The device according to p. 20, characterized in that the demodulator to demodu

 

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FIELD: radio engineering, possible use for construction of radio stations, including several commutated antennas.

SUBSTANCE: transmitting-receiving center, having transmitter, receiver, two antennas and four switching blocks, additionally has three signal separation blocks, three loads of test signal, two blocks of test signal, two comparison circuits, AND circuit and temporal range generator.

EFFECT: improved protection of transmitter output from short-circuit and of receiver input from powerful signal of transmitter, in other words, prevention of breakdown of transmitting-receiving center as a whole.

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