WO2008023790A1 - Dispositif de communication sans fil et procédé de codage à détection d'erreur - Google Patents
Dispositif de communication sans fil et procédé de codage à détection d'erreur Download PDFInfo
- Publication number
- WO2008023790A1 WO2008023790A1 PCT/JP2007/066444 JP2007066444W WO2008023790A1 WO 2008023790 A1 WO2008023790 A1 WO 2008023790A1 JP 2007066444 W JP2007066444 W JP 2007066444W WO 2008023790 A1 WO2008023790 A1 WO 2008023790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- error detection
- ldpc
- wireless communication
- encoding
- check matrix
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/63—Joint error correction and other techniques
- H03M13/6306—Error control coding in combination with Automatic Repeat reQuest [ARQ] and diversity transmission, e.g. coding schemes for the multiple transmission of the same information or the transmission of incremental redundancy
Definitions
- the present invention relates to a radio communication apparatus and an error detection encoding method.
- the ITu— International Telecommunication Union Radio Communication Sector
- IMT-Advanced fourth-generation mobile communication system that realizes lGbps high-speed transmission in the downstream springs! /
- LDPC Low-Density Parity-Check
- LDPC codes can be parallelized when LDPC codes are used as error correction codes, LDPC codes can reduce the speed of decoding processes compared to turbo codes that require repeated decoding processes in series.
- the wireless communication device on the data receiving side receives an error detection result of received data, that is, ACK (AC nowled gment) or NACK (Negative AC Nowledgment) is reported to the data transmission side Izumisen communication device.
- ACK AC nowled gment
- NACK Negative AC Nowledgment
- Some use error detection codes such as (Cyclic Redundancy Check) codes, and some use (2) syndrome values.
- the syndrome value is a vector value generated by multiplying the LDPC code parity check matrix and the hard decision value (decoded bit string) of the received data. Is a parameter indicating the degree of data error. In error detection using syndrome values, if all syndrome values are zero, it is determined that there is no error in the received data and an ACK is reported. If any syndrome value is not zero, there is an error in the received data. Judge that it exists and report NACK.
- Non-Patent Document 1 Low-Density Parity-Check (LDPC) Coded OFDM Systems-Coding / Decoding Over Time and Frequency Domains-, Hisashi FUTA I and Tomoaki OH TSU I, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, TECHNICAL REPORT OF IEICE, NS2001-91, RCS2001-92, pp.79-84, 2001-07
- LDPC Low-Density Parity-Check
- Non-Patent Document 2 Rl- 051383, "Rate-compatible LDPC codes with low complexity & de coder", Mitsubishi Electric Corporation, NTT DoCoMo, 3GPP TSG-RAN WG1 # 43 Meeting contribution, 2005/11
- the LDPC encoded data generated by the LDPC code is composed of systematic bits and NORMAL bits.
- the error detection code only targets systematic bits. Error detection can be performed independently only for systematic bits that have been error-corrected and decoded, and accurate error detection can be performed.
- the error detection code is a redundant bit, which causes a decrease in throughput. In particular, when the code block size (that is, the transmission bit string length) is small, this is a major factor in reducing the error detection code power S throughput.
- An object of the present invention is to provide a radio communication apparatus and an error detection coding method capable of accurately performing error detection while suppressing a decrease in throughput when an LDPC code is used as an error correction code. It is.
- the wireless communication apparatus of the present invention is configured to perform error detection encoding only on bits in which the column weight of an LDPC encoding check matrix is less than a threshold in a transmission bit string, and obtain first encoded data Encoding means, second encoding means for obtaining second encoded data by performing LDPC encoding on the first encoded data using the check matrix, and transmitting means for transmitting the second encoded data
- the structure which comprises these is taken.
- FIG. 1 is a block configuration diagram of a wireless communication device on a data transmission side according to an embodiment of the present invention.
- FIG. 2 is a parity check matrix according to an embodiment of the present invention.
- FIG. 3 is a column weight distribution of a parity check matrix according to an embodiment of the present invention.
- FIG. 4 Column weight vs. BER (simulation result) according to one embodiment of the present invention
- FIG. 5 is a diagram showing an encoding process according to an embodiment of the present invention.
- FIG. 6 is a block configuration diagram of a wireless communication device on the data receiving side according to an embodiment of the present invention.
- FIG. 7 is a diagram showing a syndrome value calculation method according to an embodiment of the present invention.
- FIG. 8 is a process flow diagram of error detection processing according to an embodiment of the present invention.
- FIG. 1 shows the configuration of radio communication apparatus 100 on the data transmission side according to the present embodiment.
- a transmission bit string is input to CRC encoding section 101 in units of code block size.
- the CRC coding unit 101 receives the column weight of the LDPC code parity check matrix (hereinafter simply referred to as the parity check matrix) from the LDPC coding part 102. Then, CRC encoding section 101 performs CRC encoding on only a part of the transmission bit string based on the column weight of the check matrix to obtain CRC encoded data. This CRC encoded data is output to LDPC encoding section 102.
- the details of the CRC encoding process in CRC encoding section 101 will be described later.
- LDPC encoding section 102 performs LDPC encoding on CRC encoded data using the same check matrix as the check matrix used in CRC encoding in CRC encoding section 101. Obtain LDPC encoded data. This LDPC encoded data is output to retransmission control section 103.
- Retransmission control section 103 outputs LDPC encoded data as it is to modulation section 104 and stores it for a predetermined time. Then, when ACK is input from decoding section 109, retransmission control section 103 discards LDPC encoded data corresponding to the ACK. On the other hand, when NACK is input from decoding section 109, retransmission control section 103 outputs a part of the LDPC encoded data corresponding to the NACK to modulation section 104 again. In this way, ARQ is applied to LDPC encoded data.
- Modulation section 104 modulates LDPC encoded data to generate a data symbol, and outputs the data symbol to radio transmission section 105.
- Radio transmission section 105 performs transmission processing such as D / A conversion, amplification and up-conversion on the data symbol, and transmits the data symbol to radio communication apparatus on the data reception side from antenna 106
- the wireless reception unit 107 receives a control signal transmitted from the wireless communication device on the data reception side via the antenna 106, and performs reception processing such as down-conversion and A / D conversion on the control signal. And output to demodulation section 108.
- This control signal includes ACK or NACK reported from the wireless communication device on the data receiving side.
- Demodulation section 108 demodulates the control signal and outputs it to decoding section 109.
- Decoding section 109 decodes the control signal and outputs ACK or NACK included in the control signal to retransmission control section 103.
- FIG. 2 shows an example of a 16 ⁇ 24 check matrix.
- the parity check matrix is M rows X
- Each column of the parity check matrix corresponds to each bit of the LDPC encoded data.
- LDPC encoding is performed using the parity check matrix shown in Fig. 2, 24-bit LDPC encoded data can be obtained.
- the number of '1's included in each column in the parity check matrix is referred to as column weight. Therefore, in the parity check matrix shown in Fig. 2, the ⁇ IJ weight of the first ⁇ IJ is 11, and the column weight of the second column is 9. The same applies to the third to 24th columns.
- the distribution of column weights in the parity check matrix of FIG. 2 is as shown in FIG.
- the first bit has a ⁇ IJ weight of 11
- the second bit has a ⁇ IJ weight of 9.
- Figure 4 shows the simulation results.
- Decoding times Shows BER for each column weight when 30 times.
- bits with small column weights are more likely to be erroneous than bits with large column weights.
- the fourth to sixth bits with a column weight of 5 are more erroneous than the first to third bits with column weights of 11, 9, and 10, respectively. It can be said that it is easy. Therefore, in the wireless communication device on the data receiving side, if there is no error in the 4th to 6th bits, there is inevitably no error in the 1st to 3rd bits. Therefore, in this case, in the wireless communication device on the data transmission side, it is sufficient to perform CRC encoding only for the 4th to 6th bits among the 1st to 6th bits.
- CRC encoding section 101 transmits the input transmission according to the distribution of column weights shown in FIG. CRC coding is performed only for bits in the bit string whose check matrix column weight is less than the threshold. More specifically, the CRC encoding unit 101 performs CRC encoding shown in FIG. 5 on the transmission bit string.
- the transmission bit string length (that is, the code block size) is assumed to be 6 bits to simplify the description.
- CRC encoding section 101 has the column weight of the parity check matrix (FIG. 2) out of transmission bit sequence '101101'.
- the threshold here is obtained by (C + C) / 2 (rounded down to the nearest decimal point) max mm
- the C and C are the maximum max mm of the column weights corresponding to each bit of the transmitted bit sequence.
- x 2 + x + 1 is used as a generator polynomial in CRC encoding.
- LDPC encoding section 102 performs LDPC encoding using the parity check matrix shown in FIG. 2 on CRC encoded data '10110110', and an LDPC code composed of systematic bits and parity bits Encoded data, specifically, LDPC encoded data (second encoded data) shown in FIG. 5 is obtained.
- the CRC bit is added only in the systematic bit and not in the NORMAL bit. Therefore, the radio communication apparatus on the data receiving side performs error correction decoding. It is possible to perform error detection independently for only systematic bits. Therefore, in a situation where there is an error in the parity bit, but there is no error in the systematic bit, that is, there is no need for retransmission, a NACK is reported to the wireless communication device 100 on the data transmission side and a wasteful retransmission is performed. Can be prevented. Therefore, according to the present embodiment, it is possible to prevent a decrease in throughput due to the occurrence of useless retransmissions.
- one of the transmission bit strings in which the column weight of the check matrix is small is small.
- CRC coding is performed for only a part of bits, that is, bits that are prone to error, so that the number of CRC bits can be reduced compared with the case where CRC coding is performed for all transmission bit strings. . Therefore, according to the present embodiment, since it is possible to reduce the overhead of CRC bits, a decrease in throughput due to the addition of CRC bits can be minimized.
- bits with large column weights are not prone to error
- bits that are prone to error according to the distribution of column weights of the check matrix, that is, the degree of error occurrence are not prone to error
- bits that are prone to error according to the distribution of column weights of the check matrix that is, the degree of error occurrence, as in this embodiment. Even if CRC coding is performed only on the target, the error detection rate does not decrease and accurate error detection can be performed.
- parity check matrix shown in FIG. 2 is an example, and the parity check matrix that can be used to implement the present invention is not limited to the parity check matrix shown in FIG.
- the threshold value set in CRC encoding section 101 is not limited to the above, and the threshold value may be set based on, for example, a simulation result.
- FIG. 6 shows the configuration of radio communication apparatus 600 on the data receiving side according to the present embodiment.
- wireless reception unit 602 receives the data symbol, which is also transmitted from wireless communication device 100 on the data transmission side (FIG. 1), via antenna 601 and receives the received data. Then, it performs reception processing such as down-conversion and A / D conversion, and outputs the result to the decoding unit 603.
- Demodulation section 603 demodulates the received data and outputs it to LDPC decoding section 604.
- LDPC decoding section 604 uses the same check matrix IJ (Fig. 2) as the check matrix used in LDPC encoding section 102 of radio communication apparatus 100 (Fig. 1) on the data transmission side for received data. LDPC decoding is performed to obtain a systematic bit string.
- the LDPC decoding unit 604 performs iterative decoding according to an LDPC decoding algorithm such as Sum-product decoding or Min-Sum decoding.
- the systematic bit string subjected to hard decision after decoding is output to error detection section 605.
- LDPC decoding section 604 multiplies the check matrix and the decoded bit string (systematic bit + nority bit) after hard decision obtained in each iteration. To calculate the syndrome value. Here, 16 syndrome values are obtained. LDPC decoding section 604 obtains the sum of these syndrome values and outputs the sum to error detection section 605.
- LDPC decoding section 604 outputs the column weight of the check matrix to error detection section 605.
- Error detection section 605 performs error detection by CRC on systematic bits.
- the error detection unit 605 generates a NACK when the error is detected in the systematic bit as a result of the error detection and outputs it to the encoding unit 606, and generates an ACK when there is no error in the systematic bit.
- the data is output to the encoding unit 606.
- Error detection section 605 outputs a systematic bit string as a received bit string. Note that details of the error detection processing in the error detection unit 605 will be described later.
- Encoding section 606 encodes ACK or NACK and outputs the result to modulation section 607.
- Modulation section 607 modulates ACK or NACK to generate a control signal and outputs the control signal to radio transmission section 608.
- Radio transmission section 608 performs transmission processing such as D / A conversion, amplification and up-conversion on the control signal, and transmits the result from antenna 601 to radio communication apparatus 100 on the data transmission side (Fig. 1).
- error detection section 605 performs error detection processing according to the flowchart shown in FIG.
- the sum of syndrome values is compared with a predetermined threshold A.
- This threshold value A is determined according to the length of the systematic bit string, and a larger value is set as the systematic bit string length becomes longer. For example, systematic bit string length A threshold value A obtained by multiplying by a predetermined value 0.025 is set.
- NACK is generated without performing error detection.
- the time can be reduced and the retransmission delay can be reduced.
- error detection is performed only on some bits of the systematic bit string that have a small column weight of the check matrix, that is, bits that are prone to error, so that systematic Compared to error detection for all bits, the processing time required for error detection can be reduced and the ARQ RTT (Round Trip Time) can be reduced.
- radio communication apparatus 600 on the data reception side can be used not only when the wireless communication apparatus performs CRC coding on only a part of the transmission bit string, but also when CRC coding is performed on the entire transmission bit string.
- the sum of syndrome values may be calculated by the LDPC decoding unit 604, and the error detection unit 605 may obtain the sum of syndrome values instead of the LDPC decoding unit 604.
- the threshold A and the threshold B set in the error detection unit 605 are not limited to those described above. For example, thresholds may be set based on simulation results.
- the error detection code usable in the present invention is not limited to a CRC code.
- the radio communication device 100 (Fig. 1) on the data transmission side is provided in the radio communication base station device
- the radio communication device 600 (Fig. 6) on the data reception side is provided in the radio communication mobile station device.
- the wireless communication device 100 (FIG. 1) on the data transmission side may be provided in the wireless communication mobile station device
- the wireless communication device 600 (FIG. 6) on the data reception side may be provided in the wireless communication base station device.
- the radio communication mobile station apparatus may be referred to as UE, and the radio communication base station apparatus may be referred to as Node B.
- Each functional block used in the description of the above embodiment is typically realized as an LSI which is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them. Here, it may be called IC, system LSI, super LSI, unoretra LSI, depending on the difference in power integration of LSI.
- circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible.
- FPGA Field Programmable Gate Array
- a usable processor may be used.
- the present invention can be applied to a mobile communication system and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/438,679 US8225169B2 (en) | 2006-08-25 | 2007-08-24 | Radio communication apparatus and error detecting encoding method |
EP07792973A EP2056465A4 (en) | 2006-08-25 | 2007-08-24 | WIRELESS COMMUNICATION DEVICE AND ERROR DETECTION CODING METHOD |
JP2008530964A JP5020247B2 (ja) | 2006-08-25 | 2007-08-24 | 無線通信装置および誤り検出符号化方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-229810 | 2006-08-25 | ||
JP2006229810 | 2006-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008023790A1 true WO2008023790A1 (fr) | 2008-02-28 |
Family
ID=39106871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/066444 WO2008023790A1 (fr) | 2006-08-25 | 2007-08-24 | Dispositif de communication sans fil et procédé de codage à détection d'erreur |
Country Status (5)
Country | Link |
---|---|
US (1) | US8225169B2 (ja) |
EP (1) | EP2056465A4 (ja) |
JP (1) | JP5020247B2 (ja) |
CN (1) | CN101502002A (ja) |
WO (1) | WO2008023790A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103338045A (zh) * | 2008-07-02 | 2013-10-02 | 松下电器产业株式会社 | 通信装置、终端装置和通信方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8181084B1 (en) * | 2008-08-14 | 2012-05-15 | Marvell International Ltd. | Detecting insertion/deletion using LDPC code |
CN102130745B (zh) * | 2011-04-07 | 2013-04-17 | 山东大学 | 一种改进的ldpc码的线性规划译码方法 |
US9166663B2 (en) * | 2012-12-14 | 2015-10-20 | Futurewei Technologies, Inc. | System and method for open-loop MIMO communications in a SCMA communications system |
KR20180063475A (ko) | 2016-12-02 | 2018-06-12 | 삼성전자주식회사 | 반도체 장치의 오류 검출 코드 생성 회로, 이를 포함하는 메모리 컨트롤러 및 반도체 메모리 장치 |
CN106559180B (zh) * | 2016-12-08 | 2019-08-02 | 西安烽火电子科技有限责任公司 | 基于速率兼容ldpc码的arq短报文通信方法 |
TWI652677B (zh) * | 2017-11-29 | 2019-03-01 | 群聯電子股份有限公司 | 解碼方法、記憶體儲存裝置及記憶體控制電路單元 |
CN114050889B (zh) * | 2021-11-06 | 2023-09-26 | 东南大学 | 一种带权错误检测的低功耗广域网抗干扰方法 |
CN115037415B (zh) * | 2022-05-31 | 2024-02-09 | 江苏屹信航天科技有限公司 | 基于crc的纠错编码的方法、装置、终端 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0946321A (ja) * | 1995-08-01 | 1997-02-14 | Fujitsu Ltd | データ通信方法及び装置 |
JP2000004171A (ja) * | 1998-06-15 | 2000-01-07 | Oki Electric Ind Co Ltd | 移動体通信方法 |
JP2004253017A (ja) * | 2003-02-18 | 2004-09-09 | Fujitsu Ltd | 記録媒体再生装置、記録媒体再生方法およびハードディスクコントローラ |
JP2005039585A (ja) * | 2003-07-16 | 2005-02-10 | Science Univ Of Tokyo | 情報送信方法及び装置 |
JP2006229810A (ja) | 2005-02-21 | 2006-08-31 | Seiko Epson Corp | 複数画素ずつコード化しながら画像を出力する画像出力システム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7184486B1 (en) * | 2000-04-27 | 2007-02-27 | Marvell International Ltd. | LDPC encoder and decoder and method thereof |
US20030152158A1 (en) * | 2002-02-11 | 2003-08-14 | Vocal Technologies, Ltd. | Method of asymmetrical forward error correction in a communication system. application to wireless local area networks (WLAN) using turbo codes and low density parity check codes |
WO2004006443A1 (en) * | 2002-07-03 | 2004-01-15 | Hughes Electronics Corporation | Bit-interleaved coded modulation using low density parity check (ldpc) codes |
US7103825B2 (en) * | 2003-08-19 | 2006-09-05 | Mitsubishi Electric Research Laboratories, Inc. | Decoding error-correcting codes based on finite geometries |
JP2006060695A (ja) | 2004-08-23 | 2006-03-02 | Science Univ Of Tokyo | 情報復号方法、情報符号化方法、情報通信方法、情報復号装置、送信装置及び情報通信システム |
-
2007
- 2007-08-24 WO PCT/JP2007/066444 patent/WO2008023790A1/ja active Application Filing
- 2007-08-24 EP EP07792973A patent/EP2056465A4/en not_active Withdrawn
- 2007-08-24 US US12/438,679 patent/US8225169B2/en active Active
- 2007-08-24 CN CNA2007800288981A patent/CN101502002A/zh active Pending
- 2007-08-24 JP JP2008530964A patent/JP5020247B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0946321A (ja) * | 1995-08-01 | 1997-02-14 | Fujitsu Ltd | データ通信方法及び装置 |
JP2000004171A (ja) * | 1998-06-15 | 2000-01-07 | Oki Electric Ind Co Ltd | 移動体通信方法 |
JP2004253017A (ja) * | 2003-02-18 | 2004-09-09 | Fujitsu Ltd | 記録媒体再生装置、記録媒体再生方法およびハードディスクコントローラ |
JP2005039585A (ja) * | 2003-07-16 | 2005-02-10 | Science Univ Of Tokyo | 情報送信方法及び装置 |
JP2006229810A (ja) | 2005-02-21 | 2006-08-31 | Seiko Epson Corp | 複数画素ずつコード化しながら画像を出力する画像出力システム |
Non-Patent Citations (2)
Title |
---|
HISASHI FUTAKI; TOMOAKI OHTSUKI, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, TECHNICAL REPORT OF IEICE, July 2001 (2001-07-01), pages 79 - 84 |
See also references of EP2056465A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103338045A (zh) * | 2008-07-02 | 2013-10-02 | 松下电器产业株式会社 | 通信装置、终端装置和通信方法 |
CN103338045B (zh) * | 2008-07-02 | 2017-06-23 | 松下电器(美国)知识产权公司 | 通信装置、终端装置和通信方法 |
US10454613B2 (en) | 2008-07-02 | 2019-10-22 | Panasonic Intellectual Property Corporation Of America | Transmitting apparatus with erasure correction coding, receiving apparatus with erasure correction decoding, transmitting method with erasure correction coding, and receiving method with erasure correction decoding |
US11063693B2 (en) | 2008-07-02 | 2021-07-13 | Panasonic Intellectual Property Corporation Of America | Transmitting device with erasure correction coding and transmitting method with erasure correction coding |
US11742984B2 (en) | 2008-07-02 | 2023-08-29 | Panasonic Intellectual Property Corporation Of America | Transmitting method with error correction coding |
Also Published As
Publication number | Publication date |
---|---|
CN101502002A (zh) | 2009-08-05 |
US20100241934A1 (en) | 2010-09-23 |
JPWO2008023790A1 (ja) | 2010-01-14 |
EP2056465A4 (en) | 2010-07-21 |
EP2056465A1 (en) | 2009-05-06 |
JP5020247B2 (ja) | 2012-09-05 |
US8225169B2 (en) | 2012-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5020247B2 (ja) | 無線通信装置および誤り検出符号化方法 | |
EP1531552B1 (en) | Channel encoding apparatus and method using a parallel concatenated low density parity check code | |
JP3911263B2 (ja) | 適応的ハイブリッド自動再伝送要求方法及び装置 | |
WO2017156773A1 (en) | Hybrid automatic repeat request (harq) with polar coded transmissions | |
US7600172B2 (en) | Method and device for decoding packets of data within a hybrid ARQ scheme | |
JP2019515588A (ja) | 進化型外部符号化のための方法およびシステム | |
JP6871396B2 (ja) | 情報を処理するための方法および装置、通信デバイス、ならびに通信システム | |
US20060190801A1 (en) | Apparatus and method for generating low density parity check code using zigzag code in a communication system | |
JPWO2008126422A1 (ja) | 再送方法、通信システム、および送信装置 | |
US10454625B2 (en) | System and method for employing outer codes with non-equal length codeblocks field | |
US8386877B2 (en) | Communication system, transmitter, error correcting code retransmitting method, and communication program | |
US8402338B2 (en) | Method of error control | |
US20230208555A1 (en) | Permutated extension and shortened low density parity check codes for hybrid automatic repeat request | |
Mutlu et al. | Performance analyses of hybrid-ARQ in fifth generation new radio | |
WO2024114812A1 (zh) | 编码方法、译码方法以及通信装置 | |
Lee et al. | Rateless-coded hybrid ARQ | |
CN101232346A (zh) | 低密度奇偶校验码译码方法和译码装置 | |
Mahindra Umbarkar | Performance Analysis of Twin Concatenated Coding Scheme for Communication System | |
JP2010028770A (ja) | 通信システム、受信装置、送信装置、通信方法及びプログラム | |
KR101531184B1 (ko) | 상하위 계층 간의 연동을 이용한 복호화 방법 및 장치와 그를 이용하여 데이터 송수신 시스템 | |
TW202425543A (zh) | 編碼方法、譯碼方法以及通信裝置 | |
Nithya et al. | Analysis of BER and energy efficiency of raptor codes under BEC for wireless sensor network | |
JP2009088720A (ja) | 無線受信装置 | |
JPWO2018008084A1 (ja) | 無線通信システム、無線通信装置および無線通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780028898.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07792973 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008530964 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007792973 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12438679 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |