Asymptotic BER EXIT chart analysis for high rate codes based on the parallel concatenation of analog RCM and digital LDGM codes

被引：8

作者：

Granada, Imanol ^{[1
]}

Crespo, Pedro M. ^{[1
]}

Garcia-Frias, Javier ^{[2
]}

机构：

[1] Univ Navarra, Dept Basic Sci, Mikeletegi Pasealekua 48, San Sebastian 20018, Spain

[2] Univ Delaware, Dept Elect & Comp Engn, 307 Evans Hall, Newark, DE 19716 USA

来源：

EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | 2019年 / 2019卷 / 1期

关键词：

Rate compatible modulation (RCM); Low-density generation matrix (LDGM); EXIT charts; BER prediction; Joint source-channel coding ([!text type='JS']JS[!/text]CC); NONUNIFORM MEMORYLESS SOURCES; IMAGE TRANSMISSION; MODULATION; DESIGN;

D O I：

10.1186/s13638-018-1330-z

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：

This paper proposes an extrinsic information transfer (EXIT) chart analysis and an asymptotic bit error rate (BER) prediction method to speed up the design of high rate RCM-LDGM hybrid codes over AWGN and fast Rayleigh channels. These codes are based on a parallel concatenation of a rate compatible modulation (RCM) code with a low-density generator matrix (LDGM) code. The decoder uses the iterative sum-product algorithm to exchange information between the variable nodes (VNs) and the two types of constituent check nodes: RCM-CN and LDGM-CN. The novelty of the proposed EXIT chart procedure lies on the fact that it mixes together the analog RCM check nodes with the digital LDGM check nodes, something not possible in previous multi-edge EXIT charts proposed in the literature.

引用

页数：14