Multilevel coding scheme based on low-density parity-check codes in DAMB

WANG Jia-qing; YU Xiao-yan; WU Le-nan

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Multilevel coding scheme based on low-density parity-check codes in DAMB

更新时间：2024-10-14

- Multilevel coding scheme based on low-density parity-check codes in DAMB
- Issue 1, Pages: 85-90(2006)
- 作者机构：
  
  1. 东南大学无线电工程系
  2. 东南大学无线电工程系江苏南京210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN931
- Published：2006
- 稿件说明：
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[1]王加庆,于晓燕,吴乐南.数字调幅广播中基于LDPC码的多级编码方案[J].通信学报,2006(01):85-90.

WANG Jia-qing, YU Xiao-yan, WU Le-nan. Multilevel coding scheme based on low-density parity-check codes in DAMB[J]. 2006, (1): 85-90.
[1]王加庆,于晓燕,吴乐南.数字调幅广播中基于LDPC码的多级编码方案[J].通信学报,2006(01):85-90. DOI：

WANG Jia-qing, YU Xiao-yan, WU Le-nan. Multilevel coding scheme based on low-density parity-check codes in DAMB[J]. 2006, (1): 85-90. DOI：

摘要

研究了DAMB系统中基于LDPC码的多级编码方案。首先

设计了MLC分量码的码率

从而给出一种具有自适应特性的以LDPC码为分量码的多级编码方案。提出了基于可靠信息传播的多级译码方案

该方案不会造成信息丢失

且不需要重编码。构造了一组性能优异的非正则LDPC码并在DAMB信道进行了差错率仿真

结果表明基于LDPC码的MLC方案全面优于标准中RCPC/MLC方案。

Abstract

A multilevel coding（MLC）scheme based on LDPC codes was investigated for digital amplitude modulation broadcasting（DAMB）system.Firstly

code rates of MLC were designed

then a multistage decoding strategy was provided based on reliability information instead of only hard decisions to subsequent decoders.We also found a set of excellent irregular LDPC codes and examined the performance of them in DAMB channels.Simulations show that this scheme is more effective than the rate compatible punctured convolutional（RCPC）coded DAMB system.

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