PSK and DPSK trellis codes for fast fading, shadowed mobile satellite communication channels

Author

McLane, P.J. ; Wittke, P.H. ; Ho, P.K.-M. ; Loo, C.

Author_Institution

Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada

Volume

36

Issue

11

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

1242

Lastpage

1246

Abstract

The performance of 8-PSK and 8-DPSK trellis codes is presented for a class of fast fading, land mobile satellite communication channels. The fading model is Rician but, in addition, the line-of-sight path is subjected to a fast lognormal attenuation that represents tree shadowing. The fading parameters used in this study represent the degree of shadowing and are based on measured data. The primary application considered is for digital speech transmission and thus, bit error probabilities in the order of 10^-3 are emphasized. Sensitivity of the bit error probability to amplitude fading, amplitude and phase fading, and decoding delay is presented. Performance is determined via digital computer simulation. Optimal four- and eight-state codes are determined and optimality is found to be dependent on the presence of lognormal shadowing

Keywords

codes; encoding; fading; mobile communication systems; phase shift keying; satellite relay systems; DPSK trellis codes; bit error probability; digital computer simulation; digital speech transmission; fading model; fast fading; line-of-sight path; optimality; shadowed mobile satellite communication channels; tree shadowing; trellis codes; Application software; Attenuation; Convolutional codes; Differential quadrature phase shift keying; Error probability; Fading; Phase shift keying; Rician channels; Satellite communication; Shadow mapping;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.8931

Filename

8931