Radio communication apparatus and method of extending response signal

FIELD: information technology.

SUBSTANCE: in the device, an extension section (214) first extends the response signal in a ZAC sequence established by the control unit (209). Further, the extension section (217) once more extends the response signal in a code extension sequence on blocks established by the control unit (209). The control unit (209) controls the cyclic shift value of the ZAC sequence used for primary extension in the extension section (214), and the code extension sequence on blocks used for secondary extension in the extension section (217), according to the established stepped change pattern. The stepped change pattern, established by the control unit (209), consists of two hierarchical levels. The stepped change pattern for each LB, distinguished for each cell, is determined in the first hierarchical level in order to randomise interference between cells. The stepped change pattern, distinguished for each mobile station, is determined in the second hierarchical level in order to randomise interference inside cells.

EFFECT: invention discloses a radio communication apparatus capable of randomising interference both between cells and inside cells.

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The technical field to which the invention relates

The present invention relates to a radio communications device and method of expansion of the response.

The level of technology

In mobile Automatic repeat Request (ARQ) is applied to data transmitted on the downlink from the base station radio (hereinafter "base station") to the mobile radio communications stations (hereinafter "mobile stations"). That is, the mobile station transmits back to the base station a response signal representing results of detection of errors in data downlink. Mobile stations use the Control with Cyclic Redundancy check (CRC) to the data downlink, and, if CRC=OK (no errors), they transmit an Acknowledgement (ACK), and, if CRC=NG (present error), then they send a not acknowledge Reception (NACK) as a response signal to the base station. These response signals are sent to the base station through the control channels of upward communication line, such as a Physical Control Channels of Upward Communication Line (PUCCH).

In addition, the base station transmits to the mobile stations, the control information for the transfer of the results of the resource allocation data downlink. This control information is transmitted to the mobile station is through control channels downlink, such as Control Channels L1/L2 (L1/L2 CCH). Each L1/L2 CCH occupies one or many Elements of the Control Channel (CCE) depending on the coding rate of control information. For example, when the channel L1/L2 CCH for transfer of control information from the encoded bit rate 2/3 occupies one CCE, the channel L1/L2 CCH for transfer of control information from the encoded bit rate 1/3 occupies two CCE, channel L1/L2 CCH for transfer of control information from the encoded bit rate 1/6 takes four CCE and channel L1/L2 CCH for transfer of control information from the encoded bit rate 1/12 takes eight CCE. If one channel L1/L2 CCH occupies many CCE, these CCE are consistent. The base station generates one L1/L2 CCH for each mobile station, assigns CCE, which must be busy this L1/L2 CCH depending on the number of CCE required in accordance with the control information, maps control information on the physical resources associated with CCE assigned, and transmits the results.

In addition, for efficient use of communication resources downlink without signaling to transfer PUCCH channels from the base station to the mobile stations for transmitting response signals in the present studies for one-to-one Association set CCE and many PUCCH (see non-Patent Document 1). According to the about this Association, each mobile station can determine the PUCCH, it will be used to transmit a response signal, based on the CCE associated with the physical resource on which the mapped control information for that mobile station. Therefore, each mobile station compares the response signal of the mobile station on a physical resource based on the CCE associated with the physical resource on which the mapped control information for that mobile station. For example, when the CCE associated with the physical resource on which the mapped control information for the mobile station, is a CCE #0, the mobile station determines that PUCCH #0 associated with CCE #0, PUCCH channel for this mobile station. In addition, for example, when the CCE associated with the physical resources on which the mapped control information for that mobile station, are CCE #0 to CCE... #3, the mobile station determines that PUCCH #0 associated with CCE #0 with the lowest number of CCE #0 to CCE... #3 is the channel PUCCH for the mobile station, or when the CCE associated with the physical resources on which the mapped control information for that mobile station, are CCE #4... CCE #7, the mobile station determines that PUCCH #4 associated with CCE #4 with the lowest number of CCE #4... CCE #7, one is by the channel PUCCH for the mobile station.

In addition, as shown in figure 1, in the present studies for multiplexing code by expanding the set of response signals from multiple mobile stations by means of sequences with Zero Avtokresla (ZAC) and Walsh sequences (see non-Patent Document 2). Figure 1 (W0, W1, W2, W3represent the Walsh sequence with a length of 4. As shown in figure 1, in the mobile station a response signal ACK or NACK is first subjected to the first extension in the frequency domain by sequence having the characteristic of a ZAC sequence (having a length of 12) in the time domain. Next, the response signal subjected to first extension is subjected to Inverse Fast Fourier Transform (IFFT) in connection with W0... W3. The response signal extended in frequency domain, transformed by IFFT in a ZAC sequence with a length of 12 in the time domain. In addition, the signal subjected to IFFT, undergoes a second expansion through Walsh sequences (of length 4). That is, one response signal is assigned to each of the four characters Multiple Access Frequency Division with Single-Carrier (SC-FDMA) with S0S3. Similarly, the response signals of other mobile stations are expanding through AC-sequences and Walsh sequences. So, different mobile stations use the ZAC sequences with different values of cyclic shift in the time domain or different sequences of Walsh. In this case, the length of the ZAC sequence in the time domain is 12, so it is possible to use twelve ZAC sequence with a cyclic shift values from "0" to "11"that are generated from one ZAC sequences. In addition, the length of the Walsh sequence is 4, so it is possible to use four different sequences of Walsh. Therefore, in an ideal communication environment can be muxed code a maximum of 48 (C) response signals from the mobile stations.

In addition, as shown in figure 1, in the present studies for multiplexing the code of the set of reference signals (e.g., pilot signals) from multiple mobile stations (see non-Patent Document 2). As shown in figure 1, when three symbols of R0, R1and R2the reference signal generated from the ZAC sequence (the length of which is 12), first ZAC sequence is subjected to IFFT in connection with orthogonal sequences [F0F1F2]having a length of 3, such as a sequence of Fourier. By mentioned IFFT is ZAC-series is here, with a length of 12 in the time domain. Further, the signal subjected to IFFT, extends through orthogonal sequences [F0F1F2]. There is one reference signal (i.e. the ZAC sequence) is assigned to each of the three characters, R0, R1and R2. Similarly, other mobile station shall designate one reference signal (i.e. the ZAC sequence) each of the three characters, R0, R1and R2. So, different mobile stations use the ZAC sequences with different values of cyclic shift in the time domain or different orthogonal sequences. In this case, the length of the ZAC sequence in the time domain is 12, so it is possible to use twelve ZAC sequence with a cyclic shift values from "0" to "11"that are generated from one ZAC sequences. In addition, the length of the orthogonal sequence is 3, so it is possible to use three different orthogonal sequences. Therefore, in an ideal communication environment can be muxed code a maximum of 36 (123) response signals from the mobile stations.

As a result, as shown in figure 1, the seven characters of S0, S1, R0, R1, R2, S2, S3form one slot.

Thus, the cross-correlation between ZAC-after what euteleostomi with different cyclic shift values, which are generated from the same ZAC sequence that is essentially equal to zero. Therefore, in an ideal communication environment multiple response signals subjected to expansion and multiplexing code by ZAC sequences of different cyclic shift values (0 to 11), can be separated in the time domain by processing the correlation at the base station, and this is, essentially, without miodowy interference.

However, due to the impact of, for example, the difference in the moments of transmission of mobile stations and delays of multipath waves, multiple response signals from multiple mobile stations do not always arrive at the base station at the same time. For example, if the time of transmission of the response signal, enhanced by a ZAC sequence with the amount of cyclic shift "0"is shifted from the correct time of the transfer, the peak correlation ZAC sequence with the amount of cyclic shift "0" may appear in the window of detection for ZAC sequence with the amount of cyclic shift "1". In addition, if the response signal advanced by a ZAC sequence with the amount of cyclic shift "0" is delayed wave, the interference due to delay waves can appear in the window of detection for ZAC sequence with the amount of cyclic shift "1". That is, inthese cases, the ZAC sequence with the amount of cyclic shift "1" face obstacles because of the ZAC sequence with the amount of cyclic shift "0". Therefore, in these cases, decreases the efficiency of the separation between the response signal, advanced by a ZAC sequence with the amount of cyclic shift "0", and the response signal advanced by a ZAC sequence with the amount of cyclic shift "1". That is, if you use a ZAC sequence with adjacent cyclic shift values, the separation efficiency of response signals may deteriorate.

Therefore, currently, if multiple response signals multiplexed by code by expanding with the help of ZAC sequences between ZAC sequences is the cyclic shift interval (i.e. the difference in cyclic shift), so that between ZAC sequences were not megadave interference. For example, when the cyclic shift interval between ZAC sequences is equal to 2, then of the twelve ZAC sequences of length 12 with cyclic shift values "0" to "11" when the first extension response signals are used only six ZAC sequence with a cyclic shift values"0", "2", "4", "6", "8" and "10". Therefore, if the second extension response signals are used Walsh sequence with length 4, there is the possibility for multiplexing code a maximum of 24 (64) response when galow of mobile stations.

However, as shown in figure 1, the length of the orthogonal sequences used for the expansion of the reference signals is 3, and therefore, to extend the reference signals can only be used three different orthogonal sequences. Therefore, when multiple response signals are separated by means of reference signals, shown in figure 1, only 18 (63) response signals from the mobile stations can be multiplexed by code. Therefore, of the four Walsh sequences of length 4 is sufficient, the use of only three and, therefore, one of the Walsh sequence is not used.

In addition, one SC-FDMA symbol, shown in figure 1, may be referred to by the term "Long Block (LB). Therefore, the code sequence extension used for expansion in units of characters (i.e., in units of LB) designated by the term "a sequence of code expansion by block".

In addition, in the present studies to determine the 18 channels PUCCH shown in figure 2. Usually, between the mobile stations that use different code sequences of the expansion units, the orthogonality of the response signals is not disturbed, if the mobile station does not move quickly. However, between the mobile stations that IP is result the same code sequence extension in blocks, in particular, when the base station there is a big difference of the received power between the response signals from the mobile stations, between the response signals may cause interference. For example, referring to Figure 2, interference may occur between the response signal using PUCCH #3 (the amount of cyclic shift=2), and response signal using PUCCH #0 (the value of the cyclic shift=0).

To reduce such interference is investigated method abrupt shift cyclic shift (see non-Patent Document 3). The abrupt change of the cyclic shift is a way to change values of cyclic shift in the time randomly. So, it is possible to make random combinations of response signals that cause interference, and to prevent continuous jamming. That is, by an abrupt shift cyclic shift allows randomization of interference.

Thus, interference between the response signals can be generally classified into interference between cells, which is an interference between cells, and interference within the cell, which is an interference caused by mobile stations in one cell. Therefore, randomization of interference is classified on the randomization of interference between cells and the randomization of interference within a cell.

Non-patent On the document 1: Implicit Resource Allocation of ACK/NACK Signal in E-UTRA Uplink

(ftp://ftp.3gpp.org/TSG_RAN/WG1_RLl/TSGR1_49/Docs/R1-072439.zip)

Non-patent Document 2: Multiplexing capability of CQIs and ACK/NACKs form different UEs

(ftp://ftp.3gpp.org/TSG_RAN/WG1_RLl/TSGR1_49/Docs/R1-072315.zip)

Non-patent Document 3: Randomization of intra-cell interference in PUCCH (ftp://ftp.3gpp.org/TSG_RAN/WG1_RLl/TSGR1_50/Docs/R1-073412.zip)

Disclosure of invention

Problem solved with the help of invention

So, in terms of interference between cells the response signal of mobile station in one cell interference in multiple response signals using the same amount of cyclic shift that the response signal of the station in another cell, and therefore, for sufficient randomization of interference between cells requires a number of templates abrupt shift cyclic shift ("templates abrupt change"). Therefore, for sufficient randomization of interference between cells is necessary to perform an abrupt shift cyclic shift, which changes the amount of cyclic shift for each LB (that is, for each SC-FDMA-the symbol), it is necessary to perform an abrupt shift cyclic shift for each LB (i.e. abrupt shift cyclic shift for each SC-FDMA-the symbol).

On the other hand, for the randomization of interference between cells you can assign templates abrupt change of the response signals of all mobile stations in one cell. However, a problem arises, namely, that with the increase in the number of templates abrupt change increases the amount of service information control signals for transferring templates abrupt change between the base station and mobile stations. In addition, a problem arises, namely, that when many mobile stations in the same cell perform unique to the individual mobile stations abrupt shift cyclic shift for each LB, the relationship between the cyclic shift values S0, S1, S2and S3or R0, R1and R2multiplied by a sequence of code extension code in the mobile stations may be violated and, therefore, the orthogonality between mobile stations using different sequences of code expansion for blocks, can be broken. For example, as shown in figure 2, although PUCCH #3 in normal mode should be affected only from PUCCH #0, because of the violation of the orthogonality between sequences of code expansion by block interference in PUCCH #3 arise not only because of the PUCCH #0, but also because of the PUCCH #1 and PUCCH #2.

The above problem can be resolved by performing an abrupt shift cyclic shift for each slot, instead of performing an abrupt shift cyclic shift for each LB.

However, is it when performing an abrupt shift cyclic shift for each slot there is a new problem, which consists in the fact that interference between cells can not be randomized to a sufficient degree.

That is, there is a conflict between the template abrupt change, suitable for randomization of interference between cells, and the pattern of abrupt change, suitable for randomization of interference within a cell.

Accordingly, the present invention is the provision of a device of the radio communication and a way of enhancing the response signal for randomization as interference between cells, and interference within a cell.

A means for solving problems

According to the present invention, a radio communications device includes a section of the first expansion, which performs the first expansion of the response signal through one of the multiple first sequences that can be separated from each other because of different cyclic shift values; and a control section that controls the first sequence used in the first section of the expansion according to the templates abrupt change for a variety of control channels associated with the multiple first sequences, and mentioned templates abrupt shifts contain the pattern abrupt change of the first level to the shift of the s for each symbol, which varies for different cells, and the pattern of abrupt change of the second level to change for each slot, which varies for different radio communication devices.

According to the present invention a method of expanding the response signal includes the step of the first extension, which perform a first extension of the response signal through one of the multiple first sequences that can be separated from each other because of different cyclic shift values; and a stage control, which control the first sequence used in the first stage of expansion according to the templates abrupt change for a variety of control channels associated with the multiple first sequences, and mentioned templates abrupt shifts contain the pattern abrupt change of the first level shift for each symbol, which varies for different cells, and the pattern of abrupt change of the second level to change for each slot, which varies for different radio communication devices.

Useful effect of the invention

According to the present invention is the ability to randomize as interference between cells, and interference within a cell.

Brief description of drawings

Figure 1 - illustration of a method for expanding the response signal yoporno signal (prior art);

Figure 2 - illustration of the definitions of PUCCH channels (prior art);

Figure 3 is a structural diagram illustrating the configuration of a base station according to the first variant implementation of the present invention;

4 is a structural diagram illustrating the configuration of a mobile station according to the first variant implementation of the present invention;

Figa - illustration template abrupt change according to the first variant implementation of the present invention (slot 0 to slot 0 in the example 1-1);

Figw - illustration template abrupt change according to the first variant implementation of the present invention (slot 1 in slot 0 in example 1-1);

Figa - illustration template abrupt change according to the first variant implementation of the present invention (slot 0 in cell 1 in example 1-1);

Figw - illustration template abrupt change according to the first variant implementation of the present invention (slot 1 in cell 1 in example 1-1);

Figa - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 0 in example 1-1);

Figw - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 1 in example 1-1);

Figa - illustration of a pattern of abrupt change : the level according to the first variant implementation of the present invention (slot 0 in example 1-2);

Figw - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 1 in example 1-2);

Figs - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 1 in example 1-3);

Figa - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 0 in example 1-4);

Figw - illustration template abrupt change of the second level according to the first variant implementation of the present invention (slot 1 in example 1-4);

Figa - illustration template abrupt change of the second level according to the second variant of implementation of the present invention (slot 0);

Figw - illustration template abrupt change of the second level according to the second variant of implementation of the present invention (slot 1);

Figa - illustration template abrupt change of the second level according to the second variant of implementation of the present invention (slot 0); and

Figw - illustration template abrupt change of the second level according to the second variant of implementation of the present invention (slot 1).

The best option of carrying out the invention

Below, with reference to the accompanying drawings, described in detail a variant of the implementation of the present invention.

(The first version of the implementation)

Figure 3 is an illustration of a configuration of base station 100 according to the present variant implementation, and Figure 4 is an illustration of a configuration of the mobile station 200 according to the present variant implementation.

To simplify the description of figure 3 illustrates the components related to the data transmission downlink, and components related to the reception of the response signals to uplink communication data downlink, which is closely associated with the present invention, and illustration and description of the components associated with reception of data, the uplink communication is omitted. Similarly, figure 4 illustrates the components related to the data receiving downlink, and components related to transmission of the response signals to uplink communication data downlink, which is closely associated with the present invention, and illustration and description of the components associated with data transmission uplink communication, omitted.

In addition, the following description deals with the case where when the first extension uses ZAC sequence and the second extension uses the code sequence extension by blocks. However, when the first extension is equally possible applied the e sequence, which can be separated from each other because of different cyclic shift values and which differ from ZAC sequences. For example, if the first extension is equally possible application of the Generalized chirp-like (GCL) sequences, sequences with Constant Amplitude and Zero Autocorrelation (CAZAC)sequences Zadoff-Chu (ZC) or use pseudotumour sequences such as M-sequence and the orthogonal sequence Golda. In addition, when the second extension, as sequences of code expansion for blocks, it is possible to use any sequences that are treated as orthogonal sequence or essentially orthogonal sequence. For example, when the second extension, you can use the Walsh sequence or the sequence of Fourier as sequences of code expansion by blocks.

In addition, in the following description twelve ZAC sequence with a cyclic shift values "0" to "11" and a length of 12 denoted by ZAC #0... ZAC #11, and three sequences of code expansion for blocks with "0" to "2", having a length of 4, denoted as BW #0 to BW... #2. However, the present invention is not limited to these lengths of sequences.

In addition, in the following description nome is and channels PUCCH is determined by the values of cyclic shift of the ZAC sequence and non-sequence code expansion by blocks. There are many resources for response signals are determined by the sequences ZAC #0... ZAC #11, which can be separated from each other because of different cyclic shift values, and BW #0 to BW... #2, which are orthogonal to each other.

Also, in the following description it is assumed that non CCE and non PUCCH mutually uniquely related to each other. That is, CCE #0 and PUCCH #0 associated with each other, CCE #1 and PUCCH #1 associated with each other, CCE #2 and PUCCH #2 are associated with each other, etc.

In base station 100 shown in Fig 3, section 101 of the generation control information and section 104 mappings take as input the result of an assignment of resources for data descending line. In addition, section 101 of the generation control information and section 102 encoding accept as input the encoding rate of the control information for each mobile station for transmitting the resource assignment for data downlink as information encoding speed. Thus, the speed of encoding control information can be equal to 2/3, 1/3, 1/6 or 1/12.

Section 101 of the generation control information, generates control information for each mobile station for transmitting the resource assignment, and outputs control information in section 102 encoding. Control information, which is what I provided for each mobile station, includes Identifier information (ID) of the mobile station, indicating the mobile station, for which designed this control information. For example, the control information includes the ID of the mobile station bits CRC masked by the ID number of the mobile station, which transmits this control information. Moreover, according to the coding rate adopted as the input section 101 generation control information performs the assignment of the L1/L2 CCH for each mobile station based on the CCE number (i.e. the number of employed CCE)required for transmission of control information, and outputs the CCE number associated with the designated L1/L2 CCH, section 104 mapping. As described above, when the encoding rate of the control information is 2/3, L1/L2 CCH occupies one CCE. Therefore, L1/L2 CCH occupies two CCE, when the encoding rate of the control information is equal to 1/3 L1/L2 CCH occupies four CCE, when the encoding rate of the control information is 1/6, and L1/L2 CCH occupies eight CCE, when the encoding rate of the control information is 1/12. In addition, as described above, when one L1/L2 CCH occupies many CCE, many occupied by CCE are consistent.

Section 102 encoding encodes the control information for each mobile a hundred is tion according to the coding rate, accepted as input, and displays the results in the modulation section 103.

The modulation section 103 modulates the encoded control information and outputs the result in section 104 of the mapping.

On the other hand, section 105 encoding encodes and outputs the data transmission to each mobile station (i.e. data downlink) in section 106 control of retransmission.

When the original transmission section 106 control retransmission holds and outputs in section 107 of the modulation coded data transmission to each mobile station. Section 106 control re-transmission holding data transmission up until from each mobile station will not be accepted the ACK signal as input from the section 116 decision making. In addition, when each mobile station NACK signal is received as input from section 116 of decision making, that is, when re-transmission section 106 control re-transmission outputs the data transfer associated with the NACK signal, in section 107 of the modulation.

Section 107 modulation modulates the coded data transmission received as input from section 106 control re-transmission, and outputs the result in section 104 of the mapping.

When the transfer control information section 104 mapping maps the control information accepted as input is from section 103 modulation on the physical resource based on CCE, received as input from section 101 of the generation control information, and outputs the result to IFFT section 108. That is, section 104 mapping maps the control information on a subcarrier, the corresponding number of CCE from the set of subcarriers forming the OFDM symbol, for each mobile station.

On the other hand, when the data transmission downlink section 104 mapping maps data transmission to each mobile station on a physical resource on the basis of the resource assignment, and outputs the mapping result to the IFFT section 108. That is, on the basis of the resource assignment section 104 mapping maps data transmission over a part of a set of subcarriers forming the OFDM symbol, for each mobile station.

The IFFT section 108 generates an OFDM symbol by performing IFFT set of subcarriers on which the mapped control information or data transmission, and outputs the OFDM symbol section 109 of the insertion of Cyclic Prefix (CP).

Section 109 of the CP attach attaches the signal coincident with the trailing part of the OFDM symbol, the OFDM symbol as a cyclic prefix.

Block 110 performs radio processing, transmission, such as digital to analog conversion, amplification and conversion with increasing frequency OFDM symbol attached to CP, and transmits the result via the antenna 111 in the mobile station 200 (Fig 3).

On the other hand, section 112 of the radio receives the response signal or the reference signal transmitted from mobile station 200 via the antenna 111, and performs reception processing such as conversion downconverter and analog-to-digital conversion of the response signal or the reference signal.

Section 113 of the CP removal removes the CP attached to a response signal or a reference signal, which is subjected to reception processing.

Section 114 re-expansion performs a reverse extension of the response signal through a sequence of code expansion for blocks used in the second expansion in the mobile station 200, and outputs subjected to reverse the expansion of the response signal in section 115 of the correlation processing. Similarly, section 114 re-expansion performs a reverse extension of the reference signal by means of an orthogonal sequence used in the expansion of the reference signal in the mobile station 200, and outputs subjected to reverse the expansion of the reference signal section 115 of the correlation processing.

Section 115 of the processing finds a correlation value of the correlation between advanced back response signal and the ZAC sequence, which is used when the first extension in the mobile station 200, and the value of the correlation between back the advanced reference signal and this ZC sequence, and outputs these values to the correlation in section 116 of the decision.

Section 116 decision detects the response signal for each mobile station by detecting correlation peaks in the Windows of detection for each mobile station. For example, when the detection of the maximum correlation in the detection window #0 to the mobile station #0 section 116 of detecting detects a response signal from mobile station #0. Moreover, section 116 decision determines whether detektirovanii signal ACK or NACK by detection using the correlation values of the reference signal, and outputs the ACK or NACK in the section 106 control re-transmission of each mobile station.

On the other hand, in the mobile station 200 shown in Figure 4, section 202 of the radio receives OFDM symbol transmitted from base station 100 via antenna 201, and performs reception processing such as conversion downconverter and analog-to-digital conversion of the OFDM symbol.

Section 203 of the CP removal removes the CP attached to the OFDM-symbol subjected to the reception processing.

Section 204 of the Fast Fourier Transform (FFT) receives control information or data downlink mapped on multiple subcarriers by applying FFT for OFDM-symbol, and outputs the control information or data falling the line communication section 205 retrieval.

Section 205 of the extraction section 207 decodes take as input information encoding speed specifies the speed of the encoding control information that is information indicating the number of CCE occupied by the channel L1/L2 CCH.

When receiving control information section 205 of the extracting extracts the control information from the multiple subcarriers according to the coding rate, accepted as input, and outputs control information in section 206 demodulation.

Section 206 of the demodulator demodulates and outputs the control information in section 207 decoding.

Section 207 decodes decodes the control information according to the coding rate, accepted as input, and outputs the result in section 208 of the decision.

On the other hand, when data is received downlink section 205 retrieve retrieves data downlink aimed at the mobile station from the set of subcarriers on the basis of the resource assignment, received as input from section 208 of decision making, and outputs the data downlink in section 210 demodulation. These data downlink demodulated in section 210 demodulation, are decoded in section 211 decoding and accepted as input in section 212 of the CRC.

Section 212 performs CRC de is a design error in the decoded data downlink, using CRC, generates an ACK signal if CRC=OK (no errors) or a NACK signal if CRC=NG (error present), and outputs the generated response signal in section 213 of the modulation. Moreover, if CRC=OK (no errors), section 212 CRC outputs the decoded data downlink as received data.

Section 208 of the decision determines whether directed at the target mobile station control information received as input from section 207 decoding. For example, section 208 of the decision specifies that if CRC=OK (no errors) as a result of enabling IRQ-unmasking the CRC bits of the ID number of the target mobile station, the control information directed to that mobile station. Moreover, section 208 of the decision outputs the control information directed to the target mobile station, i.e. the resource assignment data downlink to the mobile station, in section 205 retrieval.

Moreover, section 208 of the decision determines the PUCCH, which is used to transmit the response signal from the target mobile station, from non CCE associated with the subcarriers on which the mapped control information directed to that mobile station, and outputs the result of determination (i.e. number of PUCCH) in section 209 of the control. For example, if the CCE, ACC is chiromancy with subcarriers, which mapped control information transmitted to the target mobile station is a CCE #0, section 208 of the decision determines that PUCCH #0 associated with CCE #0, PUCCH channel for this mobile station. In addition, for example, if the CCE associated with the subcarriers on which the mapped control information transmitted to the target mobile station, are CCE #0 to CCE... #3, section 208 of the decision determines that PUCCH #0 associated with CCE #0 with the lowest number of CCE #0 to CCE... #3 is the channel PUCCH for the mobile station, and if the CCE associated with the subcarriers on which the mapped control information directed to that mobile station, are CCE #4 to CCE... #7 then section 208 of the decision determines that PUCCH #4 associated with CCE #4 with the lowest number of CCE #4 to CCE... #7 is the channel PUCCH for the mobile station.

Based on the specified template abrupt shifts and non PUCCH taken as the input of section 208 of the decision, section 209 controls the amount of cyclic shift of the ZAC sequence used in the first extension section 214 of the extension, and the code sequence extension on the blocks used in the second extension section 217 of the extension. That is, according to sable is the abrupt change of section 209 of the control sequences ZAC #0... ZAC #11 selects a ZAC sequence with a value of the cyclic shift associated with the number of PUCCH accepted as input from section 208 of the decision, and sets this ZAC sequence in section 214 of the extension, and from sequences BW #0 to BW... #2 selects a code sequence extension for blocks associated with the number of PUCCH accepted as input from section 208 of the decision, and sets this code sequence extension by blocks in section 217 of the extension. That is, section 209 control selects one of the set of resources defined by the sequences ZAC #0... ZAC #11 and BW #0 to BW... #2. The control sequence performed in section 209 of the control will be described in more detail below. In addition, section 209 of the control outputs ZAC sequence in section 220 IFFT as a reference signal.

Section 213 modulation modulates the response signal is adopted as the input of section 212 of the CRC, and outputs the result in section 214 of the extension.

Section 214 of the extension performs the first expansion of the response signal by ZAC sequences set out in section 209 controls, and outputs the response signal subjected to first extension section 215 IFFT. That is, section 214 of the extension performs the first expansion of the response signal by a ZAC sequence with cyclical what about the shift, associated with the resource selected on the basis of the template abrupt change in section 209 of the control.

Section 215 applies IFFT IFFT to the response signal subjected to the first extension, and outputs the response signal subjected to IFFT section 216 attachment CP.

Section 216 of the CP attach attaches the signal coincident with the trailing part of the response signal subjected to IFFT, at the beginning of this response signal as a cyclic prefix.

Section 217 performs expansion second expansion of the response signal with CP through a sequence of code expansion by blocks set out in section 209 controls, and outputs the response signal subjected to the second extension section 218 multiplexing. That is, section 217 performs expansion second expansion of the response signal subjected to first extension, through a sequence of code expansion for blocks associated with the resource selected in section 209 of the control.

Section 220 applies IFFT IFFT to a reference signal, and outputs the reference signal subjected to IFFT section 221 attachment CP.

Section 221 of the CP attach attaches the signal coincident with the trailing part of the reference signal subjected to IFFT, at the beginning of this reference signal as a cyclic prefix.

Section 222 of the extension extends the reference signal with the CP pose the STV predetermined orthogonal sequence and outputs the enhanced reference signal section 218 multiplexing.

Section 218 multiplexing multiplexes in time of the response signal subjected to the second extension, and enhanced reference signal in one slot and outputs the result in section 219 of the radio.

Section 219 of the radio performs transmission processing such as d / a conversion, amplification and conversion with increasing frequency of the response signal subjected to the second extension, or the enhanced reference signal, and transmits the result via the antenna 201 to base station 100 (Fig 3).

The following is a detailed description of the control sequence in section 209 of the control.

Randomization of interference between cells requires a set of mobile stations that interfere with one mobile station, which requires a number of templates abrupt change for randomization of interference between cells. Therefore, an abrupt change of cyclic shift for each LB suitable for randomization of interference.

On the other hand, there is only one or two mobile stations, which create interference within a cell to another mobile station, and, consequently, for the randomization of interference inside the cells will be sufficient provision of a small number of templates abrupt change. In addition, if for interference within a cell is an abrupt change of cyclic the engines for each LB, then, as mentioned above, the orthogonality between sequences of code expansion units can be broken.

Therefore, this version of the implementation detects and installs in section 209 of the control duplex templates abrupt change. That is, at the first level are defined templates abrupt change for each LB that vary between cells, for randomization of interference between cells. So, on the first level of each mobile station in the same cell use the same template abrupt change. In addition, at the second level are defined templates abrupt shifts, which vary between mobile stations in one cell interference randomization inside cells. So as not to violate the orthogonality between sequences of code expansion for blocks, it is assumed that the templates abrupt change of the second level represent templates abrupt change in each slot. In addition, to reduce the amount of signaling required to transfer templates abrupt change, it is assumed that the templates abrupt change of the second level represent templates abrupt shifts, which are used by many cells.

Thus, each mobile station performs an abrupt shift, using templates abrupt change, presents important is Mr. abrupt change of the first level and pattern of abrupt change of the second level (i.e. templates 1+2 abrupt shifts). That is, the templates 1+2 abrupt shifts are established in section 209 management, and section 209 of the Department executes the control sequence according to established templates 1+2 abrupt change.

In addition, the templates 1+2 abrupt change can be transmitted from the base station to each mobile station. In addition, through one-to-one Association templates abrupt change of the first level and the ID of the cell may be reduced the amount of signaling required to transfer templates abrupt change of the first level. Moreover, as described above, the pattern of abrupt change, which is used by many cells, is used as a template abrupt change of the second level, and hence, by the unique installation templates abrupt change of the second level according to the non-PUCCH in slot 0, the amount of signaling required to transfer templates abrupt change of the second level may be reduced.

Below described control sequence based on templates 1+2 abrupt change.

<Example 1-1 (Figa, 5B, 6A, 6B, 7A and 7B)>

Templates 1+2 abrupt shifts, shown in Figa and 5B, are used in cell 0, and templates 1+2 abrupt shifts, shown in Figa and 6B, are used in the cell 1, which is adjacent to cell 0.

As shown in Fig. 5A, the slot 0 in the s channel PUCCH #0... PUCCH #17 save the relationship and change the amount of cyclic prefix for each LB according to the same pattern of abrupt change that is unique to cell 0. In other words, in slot 0 is an abrupt change for each LB that is unique to cell 0.

In addition, as shown in Fig. 5B, in slot 1, the next for slot 0, is unique to cell 0 abrupt change for each LB according to the template abrupt change of the first level, unique to cell 0. That is, in each slot in the cell 0 abrupt change for each LB is performed according to the template abrupt change of the first level, which is common to the slots and which are unique to cell 0. However, in slot 1, PUCCH #5 is in the position in which, essentially, is PUCCH #0 and PUCCH #0 is in the position in which, essentially, is PUCCH #5. That is, in slot 1, the order of PUCCH channels along the axis of rotation is opposite to the corresponding procedure for slot 0. For example, referring to BW #0 (first row), along with the fact that in slot 0 PUCCH channels are arranged in order from the PUCCH #0, PUCCH #1 AND PUCCH #2, PUCCH #3, PUCCH #4 to PUCCH #5, slot 1 PUCCH channels are arranged in order from the PUCCH #5, PUCCH #4, PUCCH #3, PUCCH #2, PUCCH #1 to PUCCH #0. Thus, in this example, the template abrupt change of the second level for each slot that is unique to the mobile station set which is by reversing the order of PUCCH channels along the axis of the cyclic shift for each slot.

In addition, as shown in Figa and 6B, in each slot in the cell 1 abrupt change for each LB is performed according to the template abrupt change of the first level, which is common to the slots and which are unique to cell 1 that is different from cell 0. On the other hand, as shown in Figa and 6B, even in cell 1 the template abrupt change of the second level for each slot that is unique to the mobile station, is determined by reversing the order of PUCCH channels along the axis of the cyclic shift.

An abrupt change in the present example is represented by equation 1. That is, the value CSindex(k,i,cellid) cyclic shift used the k-th channel of the PUCCH in the i-th unit LB (SC-FDMA-the symbol in the cell index cellidis determined by equation 1. Here, init(k) represents the amount of cyclic shift used the k-th channel PUCCH in LB0 (first LB). In addition, HopLB(i,cellid) is special for the cell template abrupt change for each LB that is set for the randomization of interference between cells and which is common to all mobile stations in one cell. In addition, Hopslot(k,j) is special for PUCCH template abrupt change in each slot, which is set for randomization of interference within the cell and which is common to all cells.

index(k,i,cellid)=mod(init(k)+HopLB(i,cellid)+Hopslot(k,j),12)

(Equation 1)

So, when one slot is formed through 7 LB, attitude, shown in figure 2, is retained between i and j. In this case, the operator floor(x) represents the largest integer that is less than or equal to x.

j=floor(i/7)(Equation 2)

Therefore, Figa and 5B, HopLB(i,cellid) is determined by Equation 3, and Hopslot(k,j) is determined using one of the Equations 4, 5 and 6.

HopLB(i,cellid)=2i(Equation 3)

Hopslot(k,j)=0 (for j=0)(Equation 4)

Hopslot(k,j)=10-init(k) (for j=1)(Equation 5)

Hopslot(k,j)=12-init(k) (for j=1)(Equation 6)

So, Figa and 7B shows the templates abrupt change of the second level (i.e. templates abrupt change in each slot)that are common to cell 0 and cell 1. Figa and 7B illustrate templates abrupt change of the second level, extracted from Figa, 5B, 6A and 6B. From Figa and 7B, it is evident that the pattern of abrupt change of the second level (i.e. the template abrupt change in each slot) is a pattern of abrupt change, which is common to cell 0 and cell 1. In addition, the direction of the arrow (i.e. sent to the e to the right) Figa and 7B indicates the direction, which probably interfere. From Figa and 7B, it follows that the PUCCH channels that are likely to become sources of interference from all channels PUCCH #0 and PUCCH #17, vary between slot 0 and slot 1. For example, along with the fact that PUCCH #1 affected by PUCCH #0 in slot 0, PUCCH #1 affected by PUCCH #3 in slot 1. That is, according to the present example by means of a simple template abrupt change in each slot defined by reversing the order of PUCCH channels along the axis of the cyclic shift for each slot, it is possible to randomize interference within a cell.

Thus, according to this example are given the opportunity to preserve orthogonality between sequences of code expansion for blocks and randomize how the interference between cells, and interference within the cell. In addition, templates abrupt change of the first level are common to all mobile stations in the same cell, so the opportunity to transfer templates abrupt change of the first level from the base station to all mobile stations in the cell. For example, the base station can transmit the templates abrupt change of the first level in the mobile station using a Broadcast Channel (BCH). In addition, by associating the ID of the cell (i.e. the indexes of the cells) and templates saccobros the th change of the first level and by passing the ID of the cell (index, cell) mobile stations, the base station may transmit templates abrupt change of the first level in the mobile station. In addition, according to the present example, the pattern of abrupt change, which varies between mobile stations, indicates the pattern of abrupt change in each slot, so that the opportunity to reduce the number of templates abrupt change and reduce the amount of signaling required to transfer templates abrupt change. In addition, the pattern of abrupt change of the second level refers to the pattern of abrupt change that is common to multiple cells, so the opportunity to further reduce the amount of signaling required to transfer templates abrupt change of the second level.

<Example 1-2 (Figa and 8B)>

When the mobile station moves quickly, interference occurs not only in the direction of the arrow shown in Figa and 7B (i.e. in the direction to the right), but in the direction of the arrow shown in Figa (i.e. in the vertical directions). This is because in this case defined sequence BW#0=(1, 1, 1, 1), BW#1=(1, -1, 1, -1) and BW#2=(1, -1, -1, 1), and, consequently, the probability of violating the orthogonality between BW #1 and BW #2 is higher than the probability of violation of orthogonality between BW #0 and BW #1. This is because BW #0 and BW #1 orthogonal to each other between W0and W1and between W2and W3and therefore, if the channel state races is materialsa as, essentially the same LB between the first and second LB (S0and S1and between the sixth LB and seventh LB (S2and S3), then the probability of interference between the response signal BW #0 and the response signal BW #1 is small, whereas if the channel state is considered as essentially the same from the first LB to the seventh LB (S0to S3), between the response signal BW #1 and response signal BW #2 are interference. Therefore, as shown in Fig. 8A, although interference arise from PUCCH #15 to PUCCH #9, the interference does not arise from PUCCH #6 to PUCCH #1. Interference in the vertical direction, shown in Figa cannot be randomized by only templates abrupt shifts, shown in Figa and 7B.

Therefore, in this example, the templates abrupt shifts, shown in Figa and 8B are used as templates abrupt change of the second level. On Figv the order of PUCCH channels along the axis of rotation is reversed from the order with Figo and channels PUCCH associated with the corresponding sequences of code extension blocks are different shifts along the axis of the cyclic shift.

An abrupt change in the present example is represented by equation 7. That is, the value CSindex(k,i,cellid) cyclic shift in this example is determined by equation 7. Here w represents the Indus the COP sequence of code expansion in blocks, and Hopoffset(w,j) represents the magnitude of the shift, which varies for each slot and each sequence of code expansion for blocks on the cyclic shift axis.

CSindex(k,i,w,cellid)=mod(init(k)+HopLB(i,cellid)+Hopslot(k,j)+Hopoffset(w,j) (12) (Equation 7)

Thus, according to this example are given the opportunity to randomize not only obstacles that arise in the axis direction of cyclic shift, but also obstacles that arise in the direction of the axis sequence of code expansion by blocks.

<Example 1-3 (Figs)>

Even when using a template abrupt shifts, shown in Figs, instead of the template abrupt shifts, shown in Figv, given the opportunity to provide the same effect as in example 1-2. Referring to Figs, the order of PUCCH channels along the axis of rotation is reversed from the order with Figa, and channels PUCCH associated with a sequence of BW #1 (second row) on Figa, associated with the sequence BW #2 (third row), and channels PUCCH associated with the sequence BW #2 (third row) on Figa, associated with a sequence of BW #1 (second row). That is Figs BW #1 (second row) and BW #2 (third row) rearranged relative to Figa.

<Example 1-4 (Figa and 9B)>

Even when using templates with accompany change, shown in Figa and 9B, instead of templates abrupt shifts, shown in Figa and 8B, the opportunity to provide the same effect as in example 1-2. Referring to Figv, the order of PUCCH channels along the axis of rotation is reversed from the order with Figa, and channels PUCCH associated with a sequence of BW #1 (second row) on Figa, associated with the sequence BW #2 (third row), and channels PUCCH associated with the sequence BW #2 (third row) on Figa, associated with a sequence of BW #1 (second row). That is Figv BW #1 (second row) and BW #2 (third row) rearranged relative to Figa.

In example 1-2 channels PUCCH using essentially the same values of cyclic shift in slot 0 (for example, PUCCH #0, PUCCH #6 and PUCCH #12 on Figa) use different values of cyclic shift in slot 1 (Pigv).

In contrast, in the present example, as shown in Figa and 9B, the PUCCH channels, using essentially the same values of cyclic shift in slot 0 (for example, PUCCH #0, PUCCH #1 and PUCCH #2 on Figa) also use essentially the same values of cyclic shift in slot 1 (Pigv). That is, PUCCH #0, PUCCH #1 and PUCCH #2 use two adjacent cyclic shift values "0" and "1" in slot 0 (Figa), and two adjacent cyclic shift values "10" and "11" in slot 1 (Pigv). Sledovatel is but when PUCCH #0, PUCCH #1 and PUCCH #2 is not used, the unused resources (i.e. available resources) are subjected to an abrupt change for each block as in slot 0 and in slot 1. Therefore, according to the present example can easily provides the ability to assign unused resources for other purposes, such as transmitting a Quality Indicator Channel (CQI).

(The second variant implementation)

According to this variant implementation, as shown in Figa and 10B, which are specific to the mobile station template abrupt change in the first embodiment is the same as in the block multiplication of the orthogonal sequence, and it varies between blocks multiplying the orthogonal sequence.

More specifically, as shown in Figa and 10B, which are specific to the mobile station template abrupt change is the same as in the block multiplication [W0, W1, W2, W3] from Figure 1, that is, the pattern of abrupt change is the same for block LB 0, 1 LB, 5 LB and 6 LB in slot 0 and block 7 LB, 8 LB, 12 LB and LB 13 in slot 1. In addition, special for mobile station template abrupt change is the same in the block multiplication [F0F1F2] in figure 1, that is, this pattern of abrupt change is the same for block 2 LB, 3 LB and 4 LB in slot 0 and block 9 LB, 10 LB and LB 11 in slot 1. Beyond that is Oh, special for the mobile station template abrupt change varies between the block multiplication [W0, W1, W2, W3] and block multiplication [F0F1F2]. Therefore, as shown in Figa and 10B, the pattern of abrupt change of the second level is represented by four values of cyclic shift for each slot, and it does not vary and remains the same in the block multiplication [W0, W1, W2, W3] or block multiplication [F0F1F2].

An abrupt change in the present example is represented by equation 8. That is, the value CSindex(k,i,cellid) cyclic shift used the k-th channel of the PUCCH in the i-th unit LB (SC-FDMA-the symbol in the cell index cellidis determined by equation 8.

CSindex(k,i,cellid)= mod(init(k)+HopLB(i,cellid)+Hopblock(k,l), (12) (Equation 8)

In equation 8 Hopblock(k,l) represents a pattern of abrupt change of the second level, which is common to multiple cells, "l" represents the index of the template abrupt change of the second level, and "i" and "l" have the relationship illustrated in equation 9.

l=0 (i=0,1,5,6), l=1 (i=2,3,4), l=2 (i=7,8,12,13), l=3 (i=9,10,11) (Equation 9)

So, Figa and 11B illustrate templates abrupt change of the second-level block 2 LB, 3 LB and 4 LB in slot 0 and in block 9 LB, 10 LB and LB 11 in slot 1. In addition, the template is cuckoobananas change second-level blocks LB 0, LB 1, LB 5, and 6 LB in slot 0 and the blocks 7 LB, 8 LB, 12 LB and LB 13 in slot 1 coincides with the templates of the first variant of implementation (see Figa and 7B). Referring to Figa and Figa, it is obvious that the PUCCH channels adjacent front and rear all channels PUCCH #0 and PUCCH #17 on the axis of rotation differ between Figo and Figo. For example, PUCCH #0 adjacent front to PUCCH #1 AND PUCCH #2 makes back to PUCCH #1 on Figa and PUCCH #4 adjacent the front to PUCCH #1 AND PUCCH #5 adjacent the rear to PUCCH #1 on Figa. Consequently, provides additional randomization of interference within a cell.

Thus, according to this variant implementation templates abrupt change of the second level includes four values of cyclic shift, so there is the possibility of increasing the number of templates abrupt change of the second level and additional randomization of interference within a cell.

The above-described embodiments of the present invention.

Channel PUCCH used for channel feedback signal ACK or NACK, may be referred to by the term "channel ACK/NACK".

In addition, it is equally possible to implement the present invention, even when the back is transmitted control information that differs from the response signals.

Moreover, a mobile station may be referred to by the term "terminal station", UE", "MT", "MS" or "STA". In addition, the base station may be referred to by the term "Node B", "BS" or "AP". In addition, subcarriers may be indicated by the term "tone". In addition, the CP may be referred to by the term "guard Interval" (GI).

Moreover, the method of detecting errors is not limited to the control of the CRC.

In addition, the method for performing the conversion between the frequency region and the temporary region is not limited to methods IFFT and FFT.

The above-described embodiments of which the present invention is applied to mobile stations. However, the present invention is also applicable to a stationary terminal device, radio communication and re-transmitting radio communications device performs the same operations with the base station that the mobile station. That is, the present invention is applicable to all wireless communications devices.

Although the above example was described embodiments of which the present invention is implemented by hardware, the present invention can be implemented by software.

Moreover, each functional block used in the description of the above embodiments may typically be implemented as a Large Integrated Circuit (LSI), consisting of integrated circuits. They can be submitted is a separate chip, either partially or completely included in one chip. Here we use the term "ENCORE", but it can also be referred to as "IC", "System LSI", "Super LSI or Ultra LSI"depending on different degrees of integration.

Moreover, the integration scheme is not limited to Large Integrated Circuits, and also possible to implement with the use of special circuits or General-purpose processors. After manufacturing LSI is also possible to use Programmable Gate arrays, or a reconfigurable processor where connections and settings of the cell circuits within the LSI can be reconfigured.

In addition, if the technology of integrated circuits will lead to the replacement of Large-scale Integrated Circuits in the progress of semiconductor technology or other derived technology, that is, of course, also be possible to integrate the functional blocks using this technology. It is also possible the use of biotechnology.

The disclosure of Japanese patent application No. 2007-257764 filed 1 October 2007, including the description, drawings and summary, are incorporated herein in its entirety by reference.

Industrial applicability

The present invention is applicable, for example, for mobile communication systems.

1. The radio communications device, comprising:
is under the first extension, which performs the first expansion of the response signal through one of the multiple first sequences that can be separated from each other because of different cyclic shift values; and a control section that controls the first sequence used in the section of the first expansion, according to the templates abrupt change for a variety of control channels associated with the multiple first sequences, and mentioned templates abrupt shifts contain the pattern abrupt change of the first level for each symbol, which varies between cells, and the pattern of abrupt change of the second level for each slot, which varies between wireless communications devices.

2. The radio communications device according to claim 1, additionally containing a section of the second expansion, which performs a second extension of the response signal subjected to first extension, through one of the multiple second sequences that are orthogonal to each other, and
the control section controls the first sequence used in the section of the first extension and the second sequence used in the section of the second expansion, according to the templates abrupt change for a variety of control channels defined by the set of the first sequence is th and multiple second sequences; and
mentioned templates abrupt shifts contain the pattern abrupt change of the first level and pattern of abrupt change of the second level.

3. The radio communications device according to claim 1, in which the template abrupt change of the second level is determined by inverse order of multiple control channels along the axis of the cyclic shift for each slot.

4. The radio communications device according to claim 2, in which:
section of the second expansion multiplies the response signal subjected to the first extension on one of the multiple second sequences; and
template abrupt change of the second level is the same in the block multiplication of the second sequence and varies between blocks multiplying the second sequence.

5. The radio communications device according to claim 1, in which the template abrupt change of the second level is common to multiple cells.

6. A way to extend the response signal that contains:
the first stage of expansion, which perform a first extension of the response signal through one of the multiple first sequences that can be separated from each other because of different cyclic shift values; and
stage management, which manages the first sequence used in the first stage of expansion, according to the templates abrupt change for a variety of kanellopoulou, associated with many of the first sequence, and the above-mentioned templates abrupt shifts contain the pattern abrupt change of the first level for each symbol, which varies between cells, and the pattern of abrupt change of the second level for each slot, which varies between wireless communications devices.



 

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EFFECT: higher efficiency, higher reliability.

6 cl, 22 dwg

FIELD: engineering of devices and methods for receipt and synchronization in direct digital satellite broadcast system.

SUBSTANCE: satellite system uses modulation with temporal signals separation and single-frequency network of ground-based re-emitting stations, each of which introduces a delay to ground signal. Delay allows to provide for coincidence of time of receipt of early modulated signal in the center of ground broadcasting zone with time of receipt of appropriate late modulated signal, thus improving switching between ground and satellite signals in receiver. Delay also compensates processing delay, occurring during conversion of satellite modulated stream under direct visibility conditions to multi-frequency modulated stream for transmission of satellite modulated stream under direct visibility conditions to user receivers. Delay is also adjusted in accordance to distance difference between each ground-based re-emitting station and satellite and between each station and center of ground-based broadcasting zone. Adjustment as described above optimizes receipt of temporal signals separation modulated and multi-frequency modulated signals by means of synchronization in the center of single-frequency system of phase of multi-frequency modulated signals, re-emitted from re-emitting stations of single-frequency system.

EFFECT: increased quality of radio-signal receipt.

8 cl, 12 dwg

FIELD: engineering of devices for generating series of preamble with low ratio of pike to average power in communications system with orthogonal multiplexing and frequency separation of channels.

SUBSTANCE: in accordance to method, first series of preamble is generated, wherein odd data of input series of preamble are transformed to zero data, and even data of aforementioned series are transformed to nonzero data, first series of preamble is transmitted through one of two antennas, second preamble series is generated, wherein even data of input series of preamble are transformed to zero data, and odd data of aforementioned series are transformed to nonzero data, second series of preamble is transmitted through another antenna.

EFFECT: increased efficiency.

6 cl, 10 dwg

FIELD: electric communications engineering, in particular, engineering of multichannel communication systems.

SUBSTANCE: system for transmitting discontinuous information contains at transmitting side information sources, multipliers, adder, clock generator, Walsh functions generator, 2n keys (where 2n - number of outputs of Walsh functions generator) and frequency splitter, two elements of one-sided conductivity and 2n additional multipliers, and on receiving side - clock generator, Walsh functions generator, multipliers, integrators, information receivers, 2n keys and frequency splitter, two elements of one-sided conductivity and 2n additional multipliers. As a new addition, on transmitting side two one-sided conductivity elements are inserted and 2n additional multipliers, and on receiving side - two one-sided conductivity elements and 2n additional multipliers.

EFFECT: decreased frequency band due to decreased effective width of channel carriers spectrum.

6 dwg, 1 tbl

FIELD: engineering of communication systems, using multi-access layout based on orthogonal multiplexing circuit with frequency division.

SUBSTANCE: communication system divides whole range of frequencies onto a set of sub-frequency ranges. Receiver of information about quality of channels receives information about quality of channels for each one of a set of frame cells, occupied during first time span by a set of frequency-time cells, occupied by second time span and a given number of sub-frequency ranges, transferred via check communication channel from receiver. Module for sorting frame cells analyzes information about quality of check communication channels and sorts frame cells in accordance to information about quality of channels. Module for assigning sub-channels, if transfer data exist, transfers data through a frame cell with best channel quality among other frame cells.

EFFECT: increased data transfer speed.

5 cl, 6 dwg

FIELD: electric radio engineering, possible use for increasing quality of electric communication, especially in multi-frequency wireless communication systems.

SUBSTANCE: method for decreasing ratio of peak signal power to its average ratio PAPR in multi-frequency communication systems, in which information symbol is formed by a set of signals, each one of which is centered on one of multiple bearing frequencies, is characterized by the fact that in transmitter a set of bearing frequencies is divided on several sections - subsets of bearing frequencies, information symbol, PAPR value of which does not exceed required threshold PAPR0, is transferred via all carriers, information symbol, value PAPR of which exceeds required threshold PAPR0 is divided on several sub-symbol sections, while number of these sections equals number of sub-carrier subsets, each section of symbol is transferred same as full symbol, wherein data are only transferred on one group of carriers, while other carriers are not modulated, in receiver, arrival of incomplete symbol is identified by analysis of amplitudes of carrier signals, which are not modulated in case of symbol division. Multi-frequency communication system is characterized by construction of receiver and transmitter, adapted for execution of operations, included in proposed method.

EFFECT: preservation of high channel capacity with simplified correction procedure.

2 cl, 12 dwg

FIELD: the invention refers to the field of radio technique and may be used for transmission of information with the aid of signals with orthogonal frequency multiplexing.

SUBSTANCE: the technical result is in increasing accuracy of synchronization of signals with orthogonal frequency multiplexing and that in its turn provides reduction of error possibility at reception of these signals even in such complex propagation conditions as shot-wave range channels. For this in the receiving set of the known equipment two memory blocks, two commutators, a maximum choice selection block, a meter and a time intervals calculation block are introduced.

EFFECT: increases accuracy of signals.

6 dwg

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