HK1124701A1 - Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol - Google Patents

Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol

Info

Publication number
HK1124701A1
HK1124701A1 HK09101882.0A HK09101882A HK1124701A1 HK 1124701 A1 HK1124701 A1 HK 1124701A1 HK 09101882 A HK09101882 A HK 09101882A HK 1124701 A1 HK1124701 A1 HK 1124701A1
Authority
HK
Hong Kong
Prior art keywords
protocol
low density
parity check
density parity
check codes
Prior art date
Application number
HK09101882.0A
Other languages
English (en)
Inventor
Mustafa Eroz
Lin-Nan Lee
Feng-Wen Sun
Original Assignee
Directv Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Directv Group Inc filed Critical Directv Group Inc
Publication of HK1124701A1 publication Critical patent/HK1124701A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • 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
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0606—Space-frequency coding
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0625—Transmitter arrangements
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0637—Properties of the code
    • 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/255—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with Low Density Parity Check [LDPC] codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03891—Spatial equalizers
    • H04L25/03898—Spatial equalizers codebook-based design
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

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)
  • Radio Transmission System (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
HK09101882.0A 2005-09-08 2009-02-27 Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol HK1124701A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/222,084 US7562280B2 (en) 2004-09-10 2005-09-08 Code design and implementation improvements for low density parity check codes for wireless routers using 802.11N protocol
PCT/US2006/034851 WO2007030613A1 (en) 2005-09-08 2006-09-08 Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol

Publications (1)

Publication Number Publication Date
HK1124701A1 true HK1124701A1 (en) 2009-07-17

Family

ID=37453018

Family Applications (1)

Application Number Title Priority Date Filing Date
HK09101882.0A HK1124701A1 (en) 2005-09-08 2009-02-27 Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol

Country Status (8)

Country Link
US (3) US7562280B2 (xx)
EP (1) EP1938541B1 (xx)
JP (1) JP4875088B2 (xx)
KR (1) KR100948758B1 (xx)
CN (1) CN101258718B (xx)
CA (1) CA2619638C (xx)
HK (1) HK1124701A1 (xx)
WO (1) WO2007030613A1 (xx)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864869B2 (en) 2002-07-26 2011-01-04 Dtvg Licensing, Inc. Satellite communication system utilizing low density parity check codes
CN101341659B (zh) * 2004-08-13 2012-12-12 Dtvg许可公司 用于多输入多输出通道的低密度奇偶校验码的码设计与实现的改进
WO2006038054A1 (en) * 2004-10-06 2006-04-13 Nokia Corporation Packet transmission using error correction of data packets
US7590183B2 (en) * 2005-05-12 2009-09-15 Intellon Corporation Generating signals for transmission of information
US7661037B2 (en) * 2005-10-27 2010-02-09 Samsung Electronics Co., Ltd. LDPC concatenation rules for IEEE 802.11n systems
FR2893433B1 (fr) * 2005-11-16 2008-06-27 Commissariat Energie Atomique Procedes et dispositifs de demodulation souple dans un systeme ofdm-cdma.
US7707479B2 (en) * 2005-12-13 2010-04-27 Samsung Electronics Co., Ltd. Method of generating structured irregular low density parity checkcodes for wireless systems
US7620880B2 (en) * 2005-12-20 2009-11-17 Samsung Electronics Co., Ltd. LDPC concatenation rules for IEEE 802.11n system with packets length specified in OFDM symbols
US7584406B2 (en) 2005-12-20 2009-09-01 Samsung Electronics Co., Ltd. LDPC concatenation rules for IEEE 802.11n system with packets length specific in octets
US8060803B2 (en) 2006-05-16 2011-11-15 Nokia Corporation Method, apparatus and computer program product providing soft iterative recursive least squares (RLS) channel estimator
JP4930512B2 (ja) * 2006-09-29 2012-05-16 富士通株式会社 無線通信システム、送信装置および受信装置
EP2127408B1 (en) * 2007-03-21 2012-09-12 ViaSat, Inc. Techniques for providing broadcast services on spot beam satellites
KR101373646B1 (ko) 2007-06-01 2014-03-14 삼성전자주식회사 Ｌｄｐｃ코딩된 데이터를 포함하는 ｏｆｄｍ 심볼을송수신하는 ｏｆｄｍ 송수신 장치와, 그 방법
US20090116574A1 (en) * 2007-11-06 2009-05-07 Qualcomm Incorporated Methods and apparatus for receive power unification for mimo and non-mimo signaling
US8286049B1 (en) * 2009-03-17 2012-10-09 Qualcomm Atheros, Inc. Configurable transmitter including flexible block coder
CN101567717B (zh) * 2009-04-23 2012-11-07 北京交通大学 一种上行链路mimo-ldpc调制与解调系统
CN101640584B (zh) * 2009-06-23 2013-07-31 北京交通大学 一种下行链路mimo-ldpc调制与解调系统
TWI419481B (zh) * 2009-12-31 2013-12-11 Nat Univ Tsing Hua 低密度奇偶檢查碼編解碼器及其方法
CN102386996B (zh) * 2010-09-01 2015-11-25 国家广播电影电视总局广播科学研究院 一种卫星双向通信中物理层数据传输方法和装置
US8665992B1 (en) * 2012-06-20 2014-03-04 MagnaCom Ltd. Pilot symbol generation for highly-spectrally-efficient communications
JP6277525B2 (ja) * 2013-01-11 2018-02-14 サン パテント トラスト データ処理方法、プリコーディング方法、通信装置
CN104601277B (zh) * 2014-11-18 2017-09-01 北京理工大学 一种基于ldpc码辅助的相位同步系统
CN104853401B (zh) * 2015-04-20 2019-01-04 小米科技有限责任公司 控制接入的方法和装置
US20160323060A1 (en) * 2015-04-28 2016-11-03 Intel IP Corporation Apparatus, computer readable medium, and method for higher qam in a high efficiency wireless local-area network
US10630410B2 (en) 2016-05-13 2020-04-21 Telefonaktiebolaget Lm Ericsson (Publ) Network architecture, methods, and devices for a wireless communications network
US10367677B2 (en) 2016-05-13 2019-07-30 Telefonaktiebolaget Lm Ericsson (Publ) Network architecture, methods, and devices for a wireless communications network
CN109891755A (zh) * 2017-01-06 2019-06-14 Lg 电子株式会社 多lpdc 码中选择ldpc 基本码的方法及其设备
CN108880563A (zh) * 2018-06-14 2018-11-23 东南大学 一种ldpc码的改进编码方法及系统
US11223372B2 (en) 2019-11-27 2022-01-11 Hughes Network Systems, Llc Communication throughput despite periodic blockages
US11838127B2 (en) 2022-03-11 2023-12-05 Hughes Network Systems, Llc Adaptive satellite communications

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
US6633856B2 (en) * 2001-06-15 2003-10-14 Flarion Technologies, Inc. Methods and apparatus for decoding LDPC codes
US6789227B2 (en) * 2001-07-05 2004-09-07 International Business Machines Corporation System and method for generating low density parity check codes using bit-filling
US6895547B2 (en) * 2001-07-11 2005-05-17 International Business Machines Corporation Method and apparatus for low density parity check encoding of data
KR100922980B1 (ko) 2003-05-02 2009-10-22 삼성전자주식회사 다중 안테나를 사용하는 직교주파수분할다중 시스템에서 채널 추정 장치 및 방법
US7394858B2 (en) * 2003-08-08 2008-07-01 Intel Corporation Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system
US7685500B2 (en) * 2003-11-25 2010-03-23 Intel Corporation Forward error correction coding in communication networks
US7418051B2 (en) * 2003-11-26 2008-08-26 Lucent Technologies Inc. Nonsystematic repeat-accumulate codes for encoding and decoding information in a communication system
US20050160351A1 (en) * 2003-12-26 2005-07-21 Ko Young J. Method of forming parity check matrix for parallel concatenated LDPC code
US7573946B2 (en) * 2003-12-31 2009-08-11 Intel Corporation Apparatus and associated methods to perform space-frequency interleaving in a multicarrier wireless communication channel
US7324605B2 (en) * 2004-01-12 2008-01-29 Intel Corporation High-throughput multicarrier communication systems and methods for exchanging channel state information
US7444134B2 (en) 2004-02-13 2008-10-28 Broadcom Corporation Device and method for transmitting long training sequence for wireless communications
US7526717B2 (en) * 2004-06-16 2009-04-28 Samsung Electronics Co., Ltd. Apparatus and method for coding and decoding semi-systematic block low density parity check codes
US20080256426A1 (en) * 2004-11-12 2008-10-16 Nokia Siemens Networks Oy Low Density Parity Check Codes For Mimo Systems

Also Published As

Publication number Publication date
US20070022352A1 (en) 2007-01-25
EP1938541B1 (en) 2019-02-20
US9203492B2 (en) 2015-12-01
US20140105330A1 (en) 2014-04-17
EP1938541A1 (en) 2008-07-02
WO2007030613A1 (en) 2007-03-15
US20100005363A1 (en) 2010-01-07
JP2009508407A (ja) 2009-02-26
CN101258718B (zh) 2012-02-15
CA2619638A1 (en) 2007-03-15
KR100948758B1 (ko) 2010-03-23
CN101258718A (zh) 2008-09-03
US7562280B2 (en) 2009-07-14
KR20080044333A (ko) 2008-05-20
JP4875088B2 (ja) 2012-02-15
CA2619638C (en) 2012-12-18
US8615697B2 (en) 2013-12-24

Similar Documents

Publication Publication Date Title
HK1124701A1 (en) Code design and implementation improvements for low density parity check codes for wireless routers using 802.11n protocol
IL177439A0 (en) Code construction for irregular shortened ldpc codes with good performance
EP1802126A4 (en) PICTURE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING PROGRAM AND PICTURE DECODING PROGRAM
DK1849470T4 (en) Cancerlægemiddel, som indeholder alpha, alpha, alpha-trifluorthymidin og thymidin-phosphorylase-inhibitor
EP1784745A4 (en) USE OF EMOTICONES FOR WIRELESS DEVICES
EP1908171A4 (en) CODING AND DIFFUSION IN FLOW OF A CORRECTION AVAL OF ERRORS
EP1836646A4 (en) BAR CODE SCANNER DECODING
ZA200704682B (en) Wireless detonator assemblies, and corresponding networks
EP1499024A4 (en) ERROR DETECTION ENCODER AND DECODER, AND DIVIDER
EP1964283A4 (en) IMPROVED NESTING STANDARD IEEE 802.11N
ZA200708781B (en) Keypad, keypad assembly and portable terminal
EP1940032A4 (en) DECODING DEVICE AND RECEIVING DEVICE
GB0503434D0 (en) Amyloid-binding peptides, analogues and uses thereof
AU2003207943A8 (en) Reduced latency interleaver utilizing shortened first codeword
AP2005003217A0 (en) Furan polymer impregnated wood.
GB2405100B (en) Resuscitators, parts and assemblies
NL1021614A1 (nl) RF draadloos afstandsbedienbare, in helderheid regelbare spaarlamp.
EP1788709A4 (en) METHOD FOR LPDC CODE GENERATION, COMMUNICATION DEVICE AND METHOD FOR CODE SEQUENCE GENERATION
GB0618250D0 (en) Process,compound,ink and use
GB2431833B (en) Decoding low-density parity check codes
EP2033398A4 (en) WIRELESS COMMUNICATION WITH PASSWORD WITH HIGH PERFORMANCE CODE ENCRYPTION
ZA200704688B (en) Code sequence and radio station
GB0521861D0 (en) Decoding low-density parity check codes
GB0521859D0 (en) Decoding low-density parity check codes
GB0521860D0 (en) Decoding low-density parity check codes