Combine LDPC Codes Over GF(q) With q-ary Modulations for Bandwidth Efficient Transmission

Author

Rong, Bo ; Jiang, Tao ; Li, Xiangmin ; Soleymani, Mohammad Reza

Author_Institution

Int. Inst. of Telecommun., Montreal

Volume

54

Issue

1

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

78

Lastpage

84

Abstract

Low-density parity-check (LDPC) codes are playing more and more important role in digital broadcasting standards due to their excellent error correction performance. In this paper, we study the combination of LDPC codes over GF(q) with q-ary modulations for bandwidth efficient transmission over AWGN channel and consider the design of the codes. Specifically, we develop the concept of quasi-regular codes, and propose an improved Monte Carlo method to optimize the quasi-regular codes. To justify the performance of our proposed scheme, simulation results are presented and analysed.

Keywords

AWGN channels; Monte Carlo methods; electromagnetic wave transmission; parity check codes; AWGN channel; GF q ary modulations; LDPC codes; Monte Carlo method; bandwidth efficient transmission; low density parity check codes; quasi regular codes; Bandwidth; Code standards; Data communication; Digital video broadcasting; Modulation coding; Parity check codes; Phase shift keying; Satellite broadcasting; Sparse matrices; TV broadcasting; Bandwidth efficient transmission; LDPC codes; Monte Carlo method; q-ary modulations;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/TBC.2007.912849

Filename

4405581