Application research on BICM-based algorithm for SW data links

Zhang Shuling1; Zhang Jianglin2; Shen Tian1

doi:10.13756/j.gtxyj.2013.02.016

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Application research on BICM-based algorithm for SW data links

- Application research on BICM-based algorithm for SW data links
- Study on Optical communication Issue 2, Pages: 32-34(2013)
- 作者机构：
  
  1. 湖北经济学院电子工程系
  2. 中船重工集团第七二二研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2013.02.016
  CLC： TN919.2
- Published：2013，
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[1]张淑玲,张江林,沈田.短波数据链中基于BICM算法的应用研究[J].光通信研究,2013(02):32-34.

Zhang Shuling1, Zhang Jianglin2, Shen Tian1. Application research on BICM-based algorithm for SW data links. [J]. (2):32-34(2013)
[1]张淑玲,张江林,沈田.短波数据链中基于BICM算法的应用研究[J].光通信研究,2013(02):32-34. DOI： 10.13756/j.gtxyj.2013.02.016.

Zhang Shuling1, Zhang Jianglin2, Shen Tian1. Application research on BICM-based algorithm for SW data links. [J]. (2):32-34(2013) DOI： 10.13756/j.gtxyj.2013.02.016.

摘要

采用（2

7）卷积码构建了一种实用性较强的BICM（比特交织编码调制）算法。首先对该算法进行了数值仿真

证明了在瑞利信道条件下BICM-ID（BICM的硬判决反馈迭代译码）算法的性能优于TCM（网格编码调制）的性能;然后将BICM-ID应用于SW（短波）数据链中

针对BICM-ID和SW数据链的特点

分析了交织长度、符号映射方式及迭代次数对BICM-ID性能的影响;最后利用DSP（数字信号处理器）实现了BICM-ID算法

给出了不同码率和不同数据量情况下的译码时间

结果表明

译码时间均满足数据链实时性要求。

Abstract

This paper introduces a pragmatic Bit-Interleaved Coded Modulation（BICM）algorithm on the basis of（2

7） convolutional code.First

it numerically simulates this algorithm

proving that the hard-decision feedback iterative decoding of BICM（BICM-ID） algorithm is superior to the Trellis Coded Modulation（TCM）in Rayleigh channels.Then

it applies BICM-ID in SW data links and analyzes such factors as interleaving length

symbol mapping and number of iterations on BICM-ID performances.Finally

it implements this algorithm by using DSP and gives the decoding time for different code rates and data amount

the results of which indicate that the decoding time satisfy the real time requirements of the data links.

关键词

迭代译码比特交织编码调制短波数据链

Keywords

iterative decodingBICMSW data link

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