Power- and bandwidth-efficient communications using LDPC codes

被引：11

作者：

Limpaphayom, P ^{[1
]}

Winick, KA ^{[1
]}

机构：

[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2004年 / 52卷 / 03期

关键词：

density evolution; low-density parity-check (LDPC) codes; multilevel coding (MLC); trellis shaping;

D O I：

10.1109/TCOMM.2004.823565

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We apply low-density parity-check (LDPC) codes to a bandwidth-efficient modulation scheme using multilevel coding, multistage decoding, and trellis-based signal shaping. Performance results based on density evolution and simulations are presented. Using irregular LDPC component codes of block length 10(5) and a 64-quadrature amplitude modulation signal constellation operating at 2 bits/dimension, a bit-error rate of 10(-5) is achieved at an E-b/N-O of 6.55 dB. At this value of E-b/N-O, the Shannon channel capacity, computed assuming equally likely signaling, is below 2 bits/dimension.

引用

页码：350 / 354

页数：5

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