Low Density Parity Check Decoding Algorithm for Multi-level Modulation Scheme

Author

Jeong, Jin Hee ; Choi, Duk Gun ; Jung, Ji Won

Author_Institution

Dept. of Radio Sci. & Eng., Korea Maritime Univ.

fYear

2005

fDate

5-5 Oct. 2005

Firstpage

731

Lastpage

735

Abstract

LDPC decoding far 8PSK received symbols are split bit by bit based using the received in-phase and quadrature components. The method of bit-splitting is affects on decoding performance because its method depend on distance over symbol constellation. This paper proposes the bit split method using the sector information with sacrifice a little performance less compared to Euclidean distance method. Furthermore DVB-S2 digital video broadcasting specification supports BC (backward compatible) mode which using the hierarchical modulation method, this paper also analyzes the decoding performance according to deviation angle of 8PSK constellation for various LDPC coding rates

Keywords

decoding; digital video broadcasting; parity check codes; phase shift keying; Euclidean distance method; LDPC decoding; PSK; backward compatible; bit split method; bit-splitting; digital video broadcasting; hierarchical modulation method; in-phase components; low density parity check decoding algorithm; multilevel modulation scheme; quadrature components; sector information; symbol constellation; Decoding; Digital modulation; Digital video broadcasting; Equations; Euclidean distance; Modulation coding; Parity check codes; Performance analysis; Performance loss; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2005 Asia-Pacific Conference on

Conference_Location

Perth, WA

Print_ISBN

0-7803-9132-2

Type

conf

DOI

10.1109/APCC.2005.1554158

Filename

1554158