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用于CMMB的低运算复杂度LDPC解码算法 被引量：4

Low Computational Complexity Algorithms of LDPC Decoder for CMMB
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摘要 本文提出了两种基于变量节点可靠度的LDPC解码算法.第一,针对传统的可靠度判决算法会产生比较严重的误判现象,导致译码性能降低.本文提出了一种改进的可靠度判决算法,它降低了变量节点的误判概率.在AWGN和瑞利信道仿真中,性能都有显著的提高,性能超过了标准BP算法.第二,提出了分层可靠度算法.和标准BP算法相比较,性能提高了0.1dB,收敛速度提高了一倍,计算复杂度降低大约65%. In the paper,two LDPC decoding algorithms based on reliability are proposed.First,the conventional early detection method is poor performance due to misjudgment.A new early detection method is proposed,which reduces the probability of misjudgment and lead to performance improvement. At AWGN and Rayleigh fading channel simulation,the performance of the new algorithm exceed standard BP algorithm.Second,the layered reliability decoding algorithm is proposed.Compared with standard BP algorithm, the performance is increased by 0.1dB,velocity of the convergence is twice faster and computational complexity is decreased by 65%.
作者 姜小波 聂正华
机构地区 华南理工大学电子与信息学院
出处 《电子学报》 EI CAS CSCD 北大核心 2010年第7期1612-1615,共4页 Acta Electronica Sinica
基金 国家自然科学基金(No.60976031)
关键词 LDPC CMMB 分层译码 瑞利衰落信道 low density parity check（LDPC） China mobile multimedia broadcasting（CMMB） layered decoding rayleigh fading channel
分类号 TN911.22 [电子电信—通信与信息系统]
  • 相关文献

参考文献11

  • 1R G Gallager.Low density parity check code[J].IEEE Transactions on Information Theory,1962,8(1):21-28.
  • 2Yang Sun,Joseph R Cavallaro.A low power 1-Gbps reconfigurable LDPC decoder design for multiple 4G wireless standards[A].Proceedings of IEEE Intemational SOC Conference[C].Newport Beach,CA,United states,Sept 2008.367-370.
  • 3Eun-A Choi,Dae-IK Chang,Deock-Gil Oh,Ji-Won Jung.Low computational complexity algorithms of LDPC decoder for DVB-S2 Systems[A].Proceedings of the IEEE 62nd Vehicular Technology Conference (VTC-2005-Fall)[C].IEEE Press,Sept 2005.536-539.
  • 4郭锐,刘济林.LDPC码的一种低复杂度BP译码算法[J].浙江大学学报（工学版）,2008,42(3):450-455. 被引量：8
  • 5Rovini M,Rossi F,Ciao P,Linsalata N,Fanucci.Layered decoding of non-layered LDPC codes[A].Proceedings of the 9th Euromico Conference on Digital System Design[C].Dubrovnik,Croatia,August 2006.537-544.
  • 6Zhang J,Wang Y,Fossorier M,Yedidia J S.Replica shuffled Iterative decoding[A].Proceedings of IEEE International Symposium on Information Theory[C].Adelaide,Australia,September 2005.454-458.
  • 7Radosavljecvic P,De Baynast A,Cavallaro J R.Optimized message passing schedules for LDPC decoding[A].Prceedoings of the Thirty-Ninth Asilomar Conference on Signals,Systems and Computers[C].Pacific Grove,CA,USA,2005.591 -595.
  • 8陈昕,门爱东.基于可靠性更新的低复杂度BP译码算法[J].电子与信息学报,2009,31(10):2421-2426. 被引量：5
  • 9林家儒,吴伟陵.非规则LDPC码在RICE信道中的性能分析[J].电子学报,2005,33(1):43-46. 被引量：6
  • 10LIU Binbin,BAI Dong,MEI Shunliang.Min-Sum Approximation Decoding of LDPC Codes with Adaptive Non-Uniform Quantization[J].Chinese Journal of Electronics,2008,17(3):503-506. 被引量：3

二级参考文献38

  • 1Gallager R G. Low-density parity-check codes [J]. IEEE Transactions on Information Theory, 1962, 8(1): 21-28.
  • 2MacKay D J C and Neal R M. Near Shannon limit performance of low density parity check codes [J]. IEEE Electronics Letters, 1996, 32(18): 1645-1646.
  • 3MacKay D J C. Good error-correcting codes based on very sparse matrices [J]. IEEE Transactions on Information Theory, 1999, 45(2): 399-431.
  • 4Fossorier M P C, Mihaljevic M, and Imai H. Reduced complexity iterative decoding of Low-Density Parity-Check codes based on belief propagation [J]. IEEE Transactions on Communications, 1999, 47(5): 673-680.
  • 5Choi Eun-A, Chang Dae-Ik, and Oh Deock-Gil, et al.. Low computational complexity algorithms of LDPC decoder for DVB-S2 systems [C]. Vehicular Technology Conference VTC2005-Fall, Texas, USA, Sept. 25-28 2005, 1: 536-539.
  • 6Liu Jian-quan, Xu You-yun, and Cai Yue-ming. Reduced complexity and improved performance for short regular LDPC codes based on select updating schedule [C]. Vehicular Technology Conference VTC2007-Spring, Dublin, Ireland, Apr. 22-25 2007: 1534-1538.
  • 7Shin Kwangho and Lee Junqwoo. Low complexity LDPC decoding techniques with adaptive selection of edges [C]. Vehicular Technology Conference VTC2007-Spring, Dublin, Ireland, Apr. 22-25 2007: 2205-2209.
  • 8Mackay D J C. Encyclopedia of sparse graph codes. http://www.inference.phy.cam.ac, uk/mackay/codes/data.html, 2007, April.
  • 9.[EB/OL].http://www331.jpl.nasa.gov/public/TurboPerf.html[OL].,.
  • 10R G Gallager.Low density parity check codes[J].IRE Trans on IT,1962,8(3):208—220.

共引文献25

同被引文献37

  • 1康亮,杨波,沈萌.符合CMMB标准的LDPC解码器设计[J].电视技术,2009,33(5):40-42. 被引量：8
  • 2朱琦,叶芳,刘钧雷,酆广增.LDPC码在802.16a OFDM系统衰落信道中的性能分析[J].电子学报,2005,33(4):624-628. 被引量：3
  • 3雷维嘉,谢显中,李广军.一种基于LDPC编码的协作通信方式[J].电子学报,2007,35(4):712-715. 被引量：18
  • 4Feng Wang, Dafio Fertonani. Symbol-level synchronization and LDPC code design for insertion/deletion channels[J].IEEE. Transactions on Communications, 2011,59(5) : 1287 - 1297.
  • 5M Sakib, T Huang. Low-density parity-check coding in ultm- wideband-over-fiber systems [ J ].IEEE:. Photonies Technology Letters,2011,23(20) : 1493 - 1495.
  • 6Fan Yong-jie. Full custom design of comparators for LDPC de- coder[ A] .2009 IEEE Region 10 Conference[ C]. Singapore: 2009.1 -4.
  • 7Jui-Hui Hung. A systematic optimized comparison algorithm for LDPC decoder[ A]. 10th International Conference on Advanced Communication Technology[ C ]. Gangwon-Do: 2008. 1513 - 1516.
  • 8Xiaobo Jiang. Multi-rate LDPC decoder implementation for CMMB[ A] .2010 International Symposium on Intelligent Sig- nal Processing and Communication Systems[ C ]. Xi' an: 2010. 1-4.
  • 9Chtmg-Hsun Huang. High performance and power efficient CMOS comparators [ J ]. Solid-State Circuits, 2003, 38 (2) : 254 - 262.
  • 10Shun-Wen Cheng. A high-speed magnitude comparator with small transistor count[ J]. Electronics, Circuits and Systems, 2003,3:1168- 1171.

引证文献4

二级引证文献5

电子学报
2010年 第7期

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