Practical 8-PSK block-coded modulation with convolutional codes and soft decision block codes for packet networks

Author

Thesling, W.H. ; Xiong, F. ; Vanderaar, M.J.

Author_Institution

Dept. of Electr. Eng., Cleveland State Univ., OH, USA

Volume

145

Issue

4

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

218

Lastpage

226

Abstract

The design and performance of a class of practical rate 2/3, 8-PSK block-coded modulation (BCM) (also referred to as multilevel modulation codes) schemes are presented. These BCM schemes utilise both convolutional codes and block codes, and have block lengths that are matched with relatively short packet lengths to satisfy requirements in packet-wireless networks. Decoding issues such as optimum signal metrics and soft-decision decoding of block codes are addressed. The performance is evaluated and simulated. It is found that these BCM schemes exhibit a coding gain comparable to 16, 32 and 64 state Ungerboeck (1982) TCM codes, but require less complexity to decode

Keywords

block codes; computational complexity; convolutional codes; maximum likelihood decoding; modulation coding; packet radio networks; phase shift keying; 8-PSK block-coded modulation; BCM; Ungerboeck TCM codes; block lengths; code rate; coding gain; complexity; convolutional codes; design; log likelihood ratio; multilevel modulation codes; optimum signal metrics; packet-wireless networks; performance; pseudo maximum-likelihood algorithm; selective decoding; short packet lengths; simulation; soft decision block codes; soft-decision decoding;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19982132

Filename

714376