Research on LDPC - CPM Coded Modulation Communication System

被引：0

作者：

Wei, Xin ^{[1
]}

Li, Zhi-gang ^{[1
]}

Dou, Zheng ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Informat & Commun Engn, Nantong Str 145, Harbin 150001, Heilongjiang, Peoples R China

来源：

ADVANCED HYBRID INFORMATION PROCESSING | 2018年 / 219卷

基金：

中国博士后科学基金; 中国国家自然科学基金; 对外科技合作项目（国际科技项目）;

关键词：

CPM; LDPC; SOVA;

D O I：

10.1007/978-3-319-73317-3_52

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In order to improve the performance of communication system, using integrated coding and modulation process to balance the design, but after trying, we find it difficult to meet the expected requirements, so joint coding modulation came into being. Continuous phase modulation is a kind of constant-envelope modulation schemes with continuous phase which provides good spectral and power efficiency. In this paper, a continuous phase code modulation system based on soft information propagation is proposed. At first, it decodes the CPM by Soft-out Viterbi Algorithm (SOVA), and then uses the soft belief and the hard decision as the input of the LDPC decoder, and finally gets the simulation results. The simulation results show that the method can reach the performance close to the Shannon limit.

引用

页码：457 / 464

页数：8

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