Block codes with soft-decision trellis decoding in compressed image transmission over Rayleigh fading channel

Author

Yuan, Dongfeng ; Gao, Chunyan ; Zhang, Lijun

Author_Institution

Dept. of Electron. Eng., Shandong Univ., Jinan, China

Volume

3

fYear

2000

fDate

2000

Firstpage

1019

Abstract

We propose an efficient error control technique for compressed image communication over a Rayleigh fading channel. The maximum-likelihood decoding in combination with soft-decision gives full play to the error correcting capabilities of block codes. By adopting the concept of the generalized array code (GAC), the trellis decoding complexity is greatly reduced at the same time. The performance of several GAC-based block codes is studied over a Rayleigh fading channel and important conclusions are drawn. When applied to image transmission, this scheme improves the system performance significantly. At bit error rates around 10^-5 a 34 dB coding gain can be obtained by the code (15,5,7), with a short time delay guaranteed due to the short code length

Keywords

Rayleigh channels; block codes; delays; error statistics; image coding; maximum likelihood decoding; visual communication; BER; Rayleigh fading channel; bit error rates; block codes; coding gain; compressed image communication; compressed image transmission; error control; error correction code; generalized array code; maximum-likelihood decoding; short code length; short time delay; soft-decision trellis decoding; system performance; trellis decoding complexity; Bit error rate; Block codes; Error correction; Error correction codes; Fading; Gain; Image coding; Image communication; Maximum likelihood decoding; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd

Conference_Location

Boston, MA

ISSN

1090-3038

Print_ISBN

0-7803-6507-0

Type

conf

DOI

10.1109/VETECF.2000.886264

Filename

886264