Bit Mapping Design for LDPC Coded BICM Schemes With Multi-Edge Type EXIT Chart

被引：20

作者：

Du, Junyi ^{[1
]}

Yang, Lei ^{[2
]}

Yuan, Jinhong ^{[2
]}

Zhou, Liang ^{[1
]}

He, Xuan ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China

[2] Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

IEEE COMMUNICATIONS LETTERS | 2017年 / 21卷 / 04期

关键词：

Bit mapping; BICM; LDPC; EXIT; PARITY-CHECK CODES; MODULATION;

D O I：

10.1109/LCOMM.2016.2646341

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, we consider the bit mapping (BM) design for regular low-density parity-check (LDPC) coded bit-interleaved coded modulation (BICM) schemes. We propose a check-node type distribution and develop multi-edge type extrinsic information transfer (EXIT) functions for the regular LDPC coded BICM schemes. Based on the EXIT functions, we propose a two-phase design method to generate the optimized practical BM in terms of the lowest decoding threshold for a given finite length LDPC code. Simulation results show that the proposed BM has a better decoding threshold compared with those of the existing works.

引用

页码：722 / 725

页数：4

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