Study on Some Quantization Issues for Decoding of Low-Density Parity Check Code with BP Algorithm

摘要：

In this paper, the quantization pattern for the BP (Belief propagation) decoding algorithm of LDPC(Low-Density Parity Check) code is studied. The effect of the bound, level and other parameters for quantization are discussed, and, the good performance of quantizational method and some good results are obtained. At the mean time, we also found the method that the mid-variables of BP decoding algorithm are large level quantized, which can improve the performance and reduce the error floor of LDPC codes at the large ratio of signal-to-noise.

关键词： LDPC code BP algorithm quantization non-uniform quantization BER (bits error ration) FER(frame error ratio)

作者: Shaohui Sun Xinmei Wang

作者单位: National Key Lab of Integrated Service Networks,Xidian University, Xian 710071 P.R.China

会议类型: 国际会议

会议名称: 第一届信号设计及其在通信中的应用国际会议(The First International Workshop on Sequence Design and Applications for CDMA Systems IWSDA2001)

会议地点: 成都

会议语种:英文

页码: 150-159

在线出版日期: 2001-09-01（万方平台首次上网日期，不代表论文的发表时间）