Simplified soft output demapper for non-binary LDPC codes

被引：4
|
作者：
Mostari, Latifa [1 ]
Taleb-Ahmed, Abdelmalik [2 ]
Bounoua, Abdennacer [1 ]
机构：
[1] Univ Djillali Liabes Sidi Bel Abbes, RCAM Lab, Sidi Bel Abbes, Algeria
[2] Univ Valenciennes & Hainaut Combresis, LAMIH UMR CNRS 8201, Valenciennes, France
来源：
OPTIK | 2015年 / 126卷 / 24期
关键词：
Low-density parity-check (LDPC) codes; Non-binary; Log-likelihood ratio (LLR); QAM; Gray mapping;
D O I：
10.1016/j.ijleo.2015.09.210
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Combining non-binary LDPC codes and high order constellation, namely Bit-Interleaved Coded Modulation (BICM), is a simple but effective way to improve the bandwidth efficiency. Since the non-binary LDPC codes require soft decisions as the input information, the constellation has to provide soft information (log-likelihood ratio) to it. In this paper, a simplified algorithm to calculate LLR for binary code is applied for non-binary code, which will remarkably reduce the computational complexity, and has nearly no performance loss. (C) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：5074 / 5076
页数：3
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