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基于电力线通信的LDPC码分层译码算法研究 被引量：2

A Study of LDPC Codes Layered Decoding Algorithm on Power Line Communications
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摘要 针对电力线信道多径延迟效应和脉冲噪声影响问题,建立了基于电力线的LDPC-OFDM系统模型.并基于该模型,对低密度奇偶校验码(LDPC)的译码算法进行深入研究.基于最小和置信传播(Belief Propagation,BP)译码算法原理,改进分层和积译码算法,提出一种基于修正因子的分层最小和对数似然比译码算法.仿真结果表明,该算法译码复杂度低,迭代收敛速度快,能够有效降低电力线LDPC-OFDM系统的误码率(BER),提高传输效率. For Power Line Communication channels multipath delay effects and impulse noise,the system of LDPCOFDM based on low-voltage power line is built.The Low Density Parity Check Codes decoding algorithm is studied based on the system.According to the min-sum BP algorithm,a coefficient is designed to modify layered sum-product algorithm,so the layered min-sum BP algorithm based coefficient is proposed.The algorithm is convenient to implenment for its low decoding complexity and fast speed of iterative.The simulation shows that the algorithm not only achieve a better error performance under the systerm of LDPC-OFDM,but also improve the transmission efficiency.
作者 蔡丽萍 马晓伟 李俊红
机构地区 中国石油大学计算机与通信工程学院 中国移动通信集团河北有限公司邢台分公司
出处 《微电子学与计算机》 CSCD 北大核心 2013年第5期125-128,共4页 Microelectronics & Computer
关键词 电力线通信 LDPC 最小和 分层译码算法 power line communication LDPC min-sum layered decoding algorithm
分类号 TP31 [自动化与计算机技术—计算机软件与理论]
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参考文献8

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共引文献7

同被引文献23

  • 1宋文妙,张建昕.基于电力线信道的改进LDPC码译码算法研究[J].微电子学与计算机,2009,26(2):171-173. 被引量：5
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  • 3Mengi A, Vinck A J H. Successive impulsive noise suppression in OFDM [ C ]. IEEE International Symposium on Power Line Communi- cations and Its Applications, Rio de Janeiro, Brazil, 2010:33 -37.
  • 4Kang J, Huang Q, Zhaug L, et al.. Quasi - cyclic LDPC codes: an algebraic construction [ J ]. IEEE Transactions on Communications, 2010, 58(5) : 1383 -1396.
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  • 10Lu Yichao, Qiu Nanfan, Chen Zhixiang. An Efficient Majority-Logic Based Message-Passing Algorithm for Non-binary LDPC Decoding[ C]//IEEE Asia Pacific Conference on Circuits and Systems, 2012:479-482.

引证文献2

二级引证文献5

微电子学与计算机
2013年 第5期

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