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Timestamp: 2015-04-25 18:55:40
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Matched Legal Cases: ['Application No. 2457420', 'Application No. 2456485', 'Application No. 03800852', 'Application No. 03132884', 'Application No. 03763216', 'Application No. 05789316', 'Application No. 03254214', 'Application No. 10001217', 'Application No. 03763495', 'Application No. 2004', 'Application No. 2007', 'Application No. 03800852', 'Application No. 03763495', 'Application No. 05789316']

Patent US8145980 - Method and system for decoding low density parity check (LDPC) codes - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn approach is provided for transmitting messages using low density parity check (LDPC) codes. Input messages are encoded according to a structured parity check matrix that imposes restrictions on a sub-matrix of the parity check matrix to generate LDPC codes. The LDPC codes are transmitted over a radio...http://www.google.com/patents/US8145980?utm_source=gb-gplus-sharePatent US8145980 - Method and system for decoding low density parity check (LDPC) codesAdvanced Patent SearchPublication numberUS8145980 B2Publication typeGrantApplication numberUS 11/938,110Publication dateMar 27, 2012Filing dateNov 9, 2007Priority dateJul 3, 2002Also published asUS7020829, US7398455, US20040005865, US20050166133, US20080065947Publication number11938110, 938110, US 8145980 B2, US 8145980B2, US-B2-8145980, US8145980 B2, US8145980B2InventorsMustafa Eroz, Feng-Wen Sun, Lin-nan LeeOriginal AssigneeDtvg Licensing, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (61), Non-Patent Citations (53), Referenced by (5), Classifications (49), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetMethod and system for decoding low density parity check (LDPC) codes
This application is a continuation of U.S. Patent Application (Ser. No. 11/059,938), filed Feb. 17, 2005, entitled �Method and System for Decoding Low Density Parity Check (LDPC) Codes, which is a continuation of U.S. Patent Application (Ser. No. 10/454,439), filed Jun. 4, 2003, now U.S. Pat. No. 7,020,829, entitled �Method and System for Decoding Low Density Parity Check (LDPC) Codes, which claims the benefit of the earlier filing date under 35 U.S.C. �119(e) of, U.S. Provisional Patent Application (Ser. No. 60/393,457), filed Jul. 3, 2002, entitled �Code Design and Implementation Improvements for Low Density Parity Check Codes,� U.S. Provisional Patent Application (Ser. No. 60/398,760), filed Jul. 26, 2002, entitled �Code Design and Implementation Improvements for Low Density Parity Check Codes,� U.S. Provisional Patent Application (Ser. No. 60/403,812), filed Aug. 15, 2002, entitled �Power and Bandwidth Efficient Modulation and Coding Scheme for Direct Broadcast Satellite and Broadcast Satellite Communications,� U.S. Provisional Patent Application (Ser. No. 60/421,505), filed Oct. 25, 2002, entitled �Method and System for Generating Low Density Parity Check Codes,� U.S. Provisional Patent Application (Ser. No. 60/421,999), filed Oct. 29, 2002, entitled �Satellite Communication System Utilizing Low Density Parity Check Codes,� U.S. Provisional Patent Application (Ser. No. 60/423,710), filed Nov. 4, 2002, entitled �Code Design and Implementation Improvements for Low Density Parity Check Codes,� U.S. Provisional Patent Application (Ser. No. 60/440,199), filed Jan. 15, 2003, entitled �Novel Solution to Routing Problem in Low Density Parity Check Decoders,� U.S. Provisional Patent Application (Ser. No. 60/447,641), filed Feb. 14, 2003, entitled �Low Density Parity Check Code Encoder Design,� U.S. Provisional Patent Application (Ser. No. 60/451,548), filed Mar. 3, 2003, entitled �System and Method for Advanced Modulation and Coding,� and U.S. Provisional Patent Application (Ser. No. 60/456,220), filed Mar. 20, 2003, entitled �Description LDPC and BCH Encoders�; the entireties of which are incorporated herein by reference.
*y j=−�(0,e j) j=0,1,2 where �(a,b)=max(a,b)+LUT �(a,b)with LUT �(a,b)=ln(1+e −|a−b|)
w k→1 =b 2 w k→i =g(�i−1 ,b i+1) i=2,3, . . . ,d c−1
w k→dc=�dc−1 Under this approach, only the forward variables, �2,�3, . . . ,�dc, are required to be stored. As the backward variables bi are computed, the outgoing messages, wk→i, are simultaneously computed, thereby negating the need for storage of the backward variables.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4709377 *Mar 13, 1985Nov 24, 1987ParadyneViterbi decoder for wireline modemsUS5371471 *Oct 29, 1993Dec 6, 1994General Electric CompanyLow complexity adaptive equalizer radio receiver employing direct reference state updatesUS5467132Nov 29, 1993Nov 14, 1995Deutsche Forschungsansalt Fur Luft-Und Raumfahrt E.V.Method for digital transmission of hierarchical HDTV, EDTV and SDTV television signalsUS5949796 *Jun 19, 1996Sep 7, 1999Kumar; Derek D.In-band on-channel digital broadcasting method and systemUS6031874Sep 26, 1997Feb 29, 2000Ericsson Inc.Unequal error protection in coded modulation schemesUS6115427Apr 25, 1997Sep 5, 2000At&T Corp.Method and apparatus for data transmission using multiple transmit antennasUS6216200Mar 14, 1995Apr 10, 2001Mips Technologies, Inc.Address queueUS6292917Sep 30, 1998Sep 18, 2001Agere Systems Guardian Corp.Unequal error protection for digital broadcasting using channel classificationUS6405338Feb 11, 1998Jun 11, 2002Lucent Technologies Inc.Unequal error protection for perceptual audio codersUS6438180 *Mar 1, 1999Aug 20, 2002Carnegie Mellon UniversitySoft and hard sequence detection in ISI memory channelsUS6510536 *Jun 1, 1999Jan 21, 2003Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry Through The Communications Research CentreReduced-complexity max-log-APP decoders and related turbo decodersUS6518892 *Jul 6, 2001Feb 11, 2003Broadcom CorporationStopping criteria for iterative decodingUS6539367 *May 26, 2000Mar 25, 2003Agere Systems Inc.Methods and apparatus for decoding of general codes on probability dependency graphsUS6751770 *Oct 10, 2001Jun 15, 2004Sony CorporationDecoder for iterative decoding of binary cyclic codesUS6769091Oct 17, 2001Jul 27, 2004Motorola, Inc.Encoding method and apparatus using squished trellis codesUS6785863Sep 18, 2002Aug 31, 2004Motorola, Inc.Method and apparatus for generating parity-check bits from a symbol setUS6789227Jul 5, 2001Sep 7, 2004International Business Machines CorporationSystem and method for generating low density parity check codes using bit-fillingUS6829308Jan 28, 2003Dec 7, 2004Hughes Electronics CorporationSatellite communication system utilizing low density parity check codesUS6857097 *May 16, 2001Feb 15, 2005Mitsubishi Electric Research Laboratories, Inc.Evaluating and optimizing error-correcting codes using a renormalization group transformationUS6895547Jul 11, 2001May 17, 2005International Business Machines CorporationMethod and apparatus for low density parity check encoding of dataUS6901119 *Feb 22, 2001May 31, 2005International Business Machines CorporationMethod and apparatus for implementing soft-input/soft-output iterative detectors/decodersUS6938196 *Apr 4, 2002Aug 30, 2005Flarion Technologies, Inc.Node processors for use in parity check decodersUS6963622Jul 3, 2003Nov 8, 2005The Directv Group, Inc.Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codesUS6965652Dec 7, 2000Nov 15, 2005Marvell International Ltd.Address generator for LDPC encoder and decoder and method thereofUS6985536Jan 11, 2002Jan 10, 2006International Business Machines CorporationBlock coding for multilevel data communicationUS7000177 *Dec 7, 2000Feb 14, 2006Marvell International Ltd.Parity check matrix and method of forming thereofUS7017106 *Jul 29, 2004Mar 21, 2006Broadcom CorporationLow density parity check (LDPC) code decoder using min*, min**, max* or max** and their respective inversesUS7072417Dec 7, 2000Jul 4, 2006Marvell International Ltd.LDPC encoder and method thereofUS7116710May 18, 2001Oct 3, 2006California Institute Of TechnologySerial concatenation of interleaved convolutional codes forming turbo-like codesUS7165205Jun 23, 2004Jan 16, 2007Motorola, Inc.Method and apparatus for encoding and decoding dataUS7178082Apr 29, 2004Feb 13, 2007Samsung Electronics Co., Ltd.Apparatus and method for encoding a low density parity check codeUS7184486 *Dec 7, 2000Feb 27, 2007Marvell International Ltd.LDPC encoder and decoder and method thereofUS7191378Jul 3, 2003Mar 13, 2007The Directv Group, Inc.Method and system for providing low density parity check (LDPC) encodingUS7421644Nov 18, 2005Sep 2, 2008Research In Motion LimitedHybrid automatic repeat request system and methodUS7620880Dec 20, 2005Nov 17, 2009Samsung Electronics Co., Ltd.LDPC concatenation rules for IEEE 802.11n system with packets length specified in OFDM symbolsUS20020021770 *May 3, 2001Feb 21, 2002Beerel Peter A.Reduced-latency soft-in/soft-out moduleUS20020048329 *Sep 12, 2001Apr 25, 2002Tran Hau ThienMethod and apparatus for min star calculations in a map decoderUS20020051499 *Sep 5, 2001May 2, 2002Cameron Kelly B.Quasi error free (QEF) communication using turbo codesUS20020071504 *Jun 14, 2001Jun 13, 2002Xiaopeng ChenMethod for iterative and non-iterative data detection using reduced-state soft-input/soft-output algorithms for complexity reductionUS20020136318 *Jan 14, 2002Sep 26, 2002Alexei GorokhovTransmission system for transmitting a multilevel signalUS20020141507Jan 31, 2001Oct 3, 2002Motorola, Inc.Method and apparatus for error correctionUS20030033570May 9, 2002Feb 13, 2003Khannanov Roman R.Method and apparatus for encoding and decoding low density parity check codes and low density turbo product codesUS20030037298 *Jul 11, 2001Feb 20, 2003International Business Machines CorporationMethod and apparatus for low density parity check encoding of dataUS20030091098Oct 25, 2002May 15, 2003Antti ManninenPartially filling block interleaver for a communication systemUS20030126551Dec 19, 2000Jul 3, 2003Ramesh ManthaHybrid automatic repeat request system and methodUS20030207696May 6, 2002Nov 6, 2003Serge WilleneggerMulti-media broadcast and multicast service (MBMS) in a wireless communications systemUS20040098659Nov 18, 2002May 20, 2004Bjerke Bjorn A.Rate-compatible LDPC codesUS20040196861Jan 12, 2001Oct 7, 2004Joseph RinchiusoPacket data transmission within a broad-band communication systemUS20040221223Apr 29, 2004Nov 4, 2004Nam-Yul YuApparatus and method for encoding a low density parity check codeUS20050149841Nov 15, 2004Jul 7, 2005Samsung Electronics Co., Ltd.Channel coding/decoding apparatus and method using a parallel concatenated low density parity check codeUS20050154958Mar 31, 2004Jul 14, 2005Bo XiaMethod and apparatus for varying lengths of low density party check codewordsUS20050235195Feb 14, 2005Oct 20, 2005Seung-Hoon ChoiApparatus and method for encoding and decoding a low density parity check code with maximum error correction and error detection capabilityUS20050257124Jul 11, 2005Nov 17, 2005Tom RichardsonNode processors for use in parity check decodersUS20050265387Mar 30, 2005Dec 1, 2005Khojastepour Mohammad AGeneral code design for the relay channel and factor graph decodingUS20050278606Jul 24, 2003Dec 15, 2005Tom RichardsonMethods and apparatus for decoding ldpc codesUS20060156181Oct 27, 2005Jul 13, 2006Samsung Electronics Co., Ltd.Method for puncturing an LDPC channel codeUS20080282127Jul 23, 2008Nov 13, 2008Ramesh ManthaHybrid automatic repeat request system and methodEP1093231A1Oct 10, 2000Apr 18, 2001Thomson-CsfConstruction method of LDPC codes,and simple systematic coding of LDPC codesWO2003001726A1Jun 14, 2002Jan 3, 2003Alexei GorokhovMimo transmission system in a radio communications networkWO2004019268A1Dec 18, 2002Mar 4, 2004Flarion Technologies IncMethods and apparatus for encoding ldpc codesWO2004077733A2Feb 26, 2004Sep 10, 2004Flarion Technologies IncMethod and apparatus for performing low-density parity-check (ldpc) code operations using a multi-level permutation* Cited by examinerNon-Patent CitationsReference1Bond, J.W.; Hui, S.; Schmidt, H.; "Constructing Low-Density Parity-Check Codes with Circulant Matrices"; Information Theory and Networking Workshop; 1999; Metsovo, Greece; Jun. 27-Jul. 1, 1999; p. 52; XP010365561; ISBN:978-0-7803-5954-3.2Bond, J.W.; Hui, S.; Schmidt, H.; "Constructing Low-Density Parity-Check Codes"; EuroComm 2000; Information Systems for Enhanced Public Safety and Security; IEEE/AFCEA; May 17, 2000; Piscataway, New Jersey, USA; IEEE LNKD-DOI:10.1109/EURCOM2000.874812; Jan. 1, 2000; pp. 260-262; XP010515080; ISBN: 978-0-7803-6323-6.3Canadian Office action dated Jan. 22, 2010 in Canadian Patent Application No. 2457420 filed Jul. 3, 2003 by Mustafa Eroz et al.; 3 pages.4Canadian Office action dated May 7, 2010 in Canadian Patent Application No. 2456485 filed Jul. 3, 2003 by Mustafa Eroz et al.5Chinese Office action dated Jul. 22, 2011 in Chinese Patent Application No. 03800852.1 filed Jul. 3, 2003 by Mustafa Eroz et al.6Chinese Office Action dated Sep. 19, 2008 in Chinese Patent Application No. 03132884.9 filed Jul. 24, 2003 by Mustafa Eroz et al.7Douillard, Catherine; Jezequel, Michel; Berrou, Claude; "Iterative Correction of Intersymbol Interference: Turbo-Equalization"; European Transactions on Telecommunications and related Technologies, AEI; Milano, Italy; vol. 6, No. 5; Sep.-Oct. 1995; pp. 507-511.8Echard, Rich; Chang, Shih-Chun; "The Pi-Rotation Low-Density Parity Check Codes"; Proceedings, IEEE Global Telecommunications Conference, GlobeCom '01; San Antonio, Texas; Nov. 25-29, 2001; pp. 980-984; XP001099251.9EPO Summons to attend oral proceedings dated Mar. 11, 2010 in European Patent Application No. 03763216.3 filed Jul. 3, 2003 by Mustafa Eroz et al.10EPO Summons to attend oral proceedings dated Mar. 5, 2010 in European Patent Application No. 05789316.6 filed Aug. 3, 2005 by Mustafa Eroz et al.11EPO Summons to attend oral proceedings dated Nov. 17, 2009 in European Patent Application No. 03254214.4 filed Jul. 2, 2003 by Mustafa Eroz et al.; 14 pages.12Esti; "Digital Video Broadcasting (DVB); Second Generation Framing Structure, Channel Coding and Modulation Systems for Broadcasting, Interactive Services, News Gathering and Other Broadband Satellite Applications"; ETSI Drafts, LIS; Jun. 1, 2004; XP002325753; ISSN: 0000-0002; pp. 21-23.13European Search Report dated May 10, 2010 in European divisional Patent Application No. 10001217.8 filed Jul. 3, 2003 (parent filing date of European Patent Application No. 03763495.3) by Mustafa Eroz et al.14Final Rejection dated Dec. 31, 2008 in U.S. Appl. No. 11/201,796, filed Aug. 10, 2005 by Mustafa Eroz et al.15Final Rejection dated Feb. 25, 2010 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.16Final Rejection dated Feb. 27, 2009 in U.S. Appl. No. 10/353,230, filed Jan. 28, 2003 by Mustafa Eroz et al.17Final Rejection dated Oct. 28, 2008 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.18Futaki, Hisashi; Ohtsuki, Tomoaki; "Low-Density Parity-Check (LDPC) Coded OFDM Systems with M-PSK"; Proceedings of the IEEE 55th Vehicular Technology Conference; 2002; VTC Spring; May 6, 2002; vol. 2; pp. 1035-1039.19Hou, Jilei; Siegel, Paul H.; Milstein, Laurence B.; Pfister, Henry D.; "Design of Low-Density Parity-Check Codes for Bandwidth Efficient Modulation"; Proceedings of the 2001 IEEE Information Theory Workshop; Cairns, Australia; Sep. 2-7, 2001; pp. 24-26.20Howland, C. and Blanksby, A.; "Parallel Decoding Architectures for Low Density Parity Check Codes"; 2001 IEEE International Symposium on Circuits and Systems (ISCAS 2001); vol. 4; pp. IV-742-IV-745.21Japanese Appeal Decision of Rejection dated Sep. 28, 2009 in Japanese Patent Application No. 2004-562643 filed Jul. 3, 2003 by Mustafa Eroz et al.; 9 pages.22Japanese Office action dated Apr. 19, 2011 in Japanese Patent Application No. 2007-525661 filed Aug. 3, 2005 by Mustafa Eroz et al.23Johnson, Sarah J.; Weller, Steven R.; "A Family of Irregular LDPC Codes with Low Encoding Complexity"; IEEE Communications Letters; IEEE Service Center; Piscataway, New Jersey, USA; vol. 7, No. 2; Feb. 1, 2003; XP011066488; ISSN:1089-7798.24Lee, Heung-No; "LDPC Coded Modulation MIMO OFDM Transceiver: Performance Comparison with MAP Equalization"; Proceedings, IEEE Vehicular Technology Conference, VTC, 2003-Spring; Jeju, Korea; vol. 2; Apr. 22-25, 2003; pp. 1178-1182; XP010862634; ISBN: 978-0-7803-7757-8.25Li, Xiaodong; Ritcey, James A.; "Bit-Interleaved Coded Modulation with Iterative Decoding"; 1999 IEEE International Conference on Communications; ICC 1999; pp. 858-863.26Lu, Ben; Yue, Guosen; Wang, Xiaodong; "Performance Analysis and Design Optimization of LDPC-Coded MIMO OFDM Systems"; IEEE Transactions on Signal Processing, IEEE Service Center; New York, New York, USA; vol. 52, No. 2; Feb. 1, 2004; pp. 348-361; XP011105722; ISSN: 1053-587X.27Narayanaswami, Ravi; "Coded Modulation with Low Density Parity Check Codes"; Thesis submitted to Texas A&M University; Jun. 2001; XP-002271230.28Non-final Office action dated Apr. 25, 2011 in U.S. Appl. No. 12/967,894, filed Dec. 14, 2010 by Mustafa Eroz et al.29Non-final Office Action dated Apr. 3, 2009 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.30Non-final Office Action dated Aug. 13, 2008 in U.S. Appl. No. 11/201,796, filed Aug. 10, 2005 by Mustafa Eroz et al.31Non-final Office action dated Aug. 16, 2010 in U.S. Appl. No. 12/195,512, filed Aug. 21, 2008 by Mustafa Eroz et al.32Non-final Office Action dated Jun. 11, 2008 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.33Non-final Office action dated May 16, 2011 in U.S. Appl. No. 12/498,968, filed Jul. 7, 2009 by Mustafa Eroz et al.34Non-final Office action dated May 19, 2011 in U.S. Appl. No. 11/938,016, filed Nov. 9, 2007 by Mustafa Eroz et al.35Non-final Office Action dated May 30, 2009 in U.S. Appl. No. 11/201,796, filed Aug. 11, 2005 by Mustafa Eroz et al.36Non-final Office Action dated Sep. 23, 2008 in U.S. Appl. No. 11/186,265, filed Jul. 21, 2005 by Mustafa Eroz et al.37Non-final Office Action dated Sep. 30, 2009 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.38Notice of Allowance dated Aug. 24, 2010 in U.S. Appl. No. 10/961,124, filed Oct. 8, 2004 by Mustafa Eroz et al.39Notice of Allowance dated Feb. 9, 2011 in U.S. Appl. No. 11/710,761, filed Feb. 26, 2007 by Mustafa Eroz et al.40Notice of Allowance dated Jan. 21, 2011 in U.S. Appl. No. 12/195,512, filed Aug. 21, 2008 by Mustafa Eroz et al.41Notice of Allowance dated May 5, 2008 in U.S. Appl. No. 11/635,998, filed Dec. 8, 2006 by Mustafa Eroz et al.42Notice of Allowance dated Nov. 16, 2011 in U.S. Appl. No. 12/967,894, filed Dec. 14, 2010 by Mustafa Eroz et al.43Notice of Allowance dated Oct. 17, 2011 in U.S. Appl. No. 12/498,968, filed Jul. 7, 2009 by Mustafa Eroz et al.44Notice of Allowance dated Sep. 7, 2011 in U.S. Appl. No. 11/938,016, filed Nov. 9, 2007 by Mustafa Eroz et al.45Ping, Li; Leung, W.K.; Phamdo, Nam; "Low Density Parity Check Codes with Semi-Random Parity Check Matrix"; Electronics Letters, IEE; Stevenage, Great Britain; vol. 35, No. 1; Jan. 7, 1999; pp. 38-39; XP006011650 ISSN: 0013-5194.46Rejection Decision dated Nov. 11, 2011 in Chinese Patent Application No. 03800852.1 filed Jul. 3, 2003 by Mustafa Eroz et al.47Summons to Oral Proceedings dated Oct. 13, 2009 in European Patent Application No. 03763495.3 filed Jul. 3, 2003 by Mustafa Eroz et al.48Supplemental European Search Report dated Apr. 1, 2009 in European patent Application No. 05789316.6 filed Aug. 3, 2005 by Mustafa Eroz et al.49Tullberg, H.M.; Siegel, P.H.; "Bit-Interleaved Coded Modulation for Delay-Constrained Mobile Communication Channels"; Proceedings, IEEE Vehicular Technology Conference; VTC 2000; Tokyo, Japan; IEEE, Inc.; New York, US; vol. 3 of 3; Conf. 51; May 15-18, 2000; pp. 2212-2216; XP000968397.50U.S. Appl. No. 10/961,124, filed Oct. 8, 2004, Mustafa Eroz, Non-final Office Action dated Nov. 27, 2007.51U.S. Appl. No. 11/635,998, filed Dec. 8, 2006, Mustafa Eroz, Non-final Office Action dated Nov. 13, 2007.52Vasic, Bane; Djordjevic, Ivan B.; "Low-Density Parity Check Codes for Long-Haul Optical Communication Systems"; IEEE Photonics Technology Letters; IEEE Photonics Technology Letters; IEEE Service Center; Piscataway, New Jersey, USA; vol. 14, No. 8; Aug. 1, 2002; XP011067271; ISSN:1041-1135.53Yi, Yu; Hou, Jia; Lee, Moon Ho; "Design of Semi-Algebraic Low-Density Parity-Check (SA-LDPC) Codes for Multilevel Coded Modulation"; Proceedings, IEEE International Conference on Parallel and Distributed Computing, Applications and Technologies; PDCAT 2003; Aug. 27, 2003; pp. 931-934; XP010661473; ISBN: 978-0-7803-7840-7.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8402341Feb 18, 2010Mar 19, 2013Mustafa ErozMethod and system for providing low density parity check (LDPC) encoding and decodingUS8683292Mar 9, 2013Mar 25, 2014Hughes Network Systems, LlcMethod and system for providing low density parity check (LDPC) coding for scrambled coded multiple access (SCMA)US8782489Mar 6, 2013Jul 15, 2014Hughes Network Systems, LlcMethod and system for providing Low Density Parity Check (LDPC) encoding and decodingUS8887024Feb 10, 2013Nov 11, 2014Hughes Network Systems, LlcApparatus and method for improved modulation and coding schemes for broadband satellite communications systemsUS20130073920 *May 29, 2012Mar 21, 2013Montage Technology (Shanghai) Co., Ltd.Implementation-oriented method of bicm based on ldpc check matrix* Cited by examinerClassifications U.S. Classification714/780, 714/794International ClassificationH03M13/03, H03M13/00, H03M13/25, H04L1/00, H04L27/20, H03M13/15, H04H40/90, H04L27/34, H03M13/29, H03M13/11, H04L27/36Cooperative ClassificationH03M13/2906, H03M13/15, H04L1/006, H03M13/112, H03M13/1165, H03M13/1102, H03M13/6362, H03M13/255, H03M13/152, H04L27/36, H03M13/1137, H03M13/6583, H03M13/1515, H04L1/0057, H03M13/356, H03M13/1111, H04H40/90, H04L27/20, H04L1/005, H04L27/34European ClassificationH04L1/00B5E5, H03M13/25L, H04L1/00B7B, H03M13/29B, H04L27/34, H03M13/11L1S3, H04L27/36, H03M13/35U, H03M13/11L3E5, H03M13/11L1D, H03M13/11L, H04L27/20, H03M13/65V2, H03M13/11L1D3C, H04L1/00B7C1, H03M13/63R2Legal EventsDateCodeEventDescriptionMay 12, 2009ASAssignmentOwner name: DTVG LICENSING, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUGHES ELECTRONICS CORPORATION;REEL/FRAME:022668/0373Effective date: 20090512Owner name: DTVG LICENSING, INC.,CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUGHES ELECTRONICS CORPORATION;US-ASSIGNMENT DATABASE UPDATED:20100225;REEL/FRAME:22668/373RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services