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适用于宽带电力线通信的LDPC码译码算法的研究 被引量：4

Research on decoding algorithn for LDPC codes in power line channels
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摘要 用A类噪声模型模拟电力线信道中的脉冲噪声环境,采用LDPC码来抑制A类噪声信道(AWAN)中的窄带脉冲噪声。针对A类噪声信道的特性,将信道初始信息的对数似然比(LLR)公式进行适当修改,完成对原有Log-BP译码算法的改造。通过蒙特卡罗仿真与原有的Log-BP译码算法的译码性能进行比较分析,结果表明,在对A类噪声模型的参数Γ和A取值合理的情况下,在AWAN信道上改造后的Log-BP译码算法的误码率性能提高近11dB。 LDPC （low density parity check）codes to AWAN （additive white class a noise）channels is adopted, which is usually used as the model of impulsive noise environment of power line channels. A modification for the LLR （ likelihood ratio ） of the initial information to Log-BP （ log domain belief propagation ） decoding, which is suitable for AWAN channels, is proposed. Finally, compared with the original Log-BP decoding, it shows the BER （bit error rate） performance of the modified Log-BP decoding over AWAN channels by Monte-Carlo simulation,the result shows that the modified Log-BP decoding has about 11 dB gain with the reasonable values A and Γ.
作者 尹成群 黄雷 宋文妙 王贵云
机构地区 华北电力大学电气与电子工程学院
出处 《电子测量与仪器学报》 CSCD 2009年第3期27-32,共6页 Journal of Electronic Measurement and Instrumentation
基金 华北电力大学博士基金(编号:200812004)资助项目
关键词 电力线上网 AWAN LDPC Log-BP power line communication AWAN LDPC Log-BP
分类号 TN911.22 [电子电信—通信与信息系统]
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参考文献9

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共引文献3

同被引文献47

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引证文献4

二级引证文献2

电子测量与仪器学报
2009年 第3期

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