Improved fading distribution for mobile radio

Author

Coulson, A.J. ; Williamson, A.G. ; Vaughan, R.G.

Author_Institution

Ind. Res. Ltd., Lower Hutt, New Zealand

Volume

145

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

197

Lastpage

202

Abstract

Probability distribution functions (PDFs) are discussed for characterising narrowband fading processes in mobile radio communications. In particular, the effects of short-term channel variations (fast fading), and longer term channel variations (shadow fading) are discussed in relation to commonly used PDFs. A channel model is proposed to represent the mixture of these processes, and is shown to be well represented by the Suzuki (1977) PDF. Difficulties in using the Suzuki PDF to predict system behaviour, in particular bit error rate (BER), are presented, and the use of the generalised gamma PDF is recommended. It is shown that this PDF represents channel behaviour as well as the Suzuki PDF, and that it is much more convenient for BER prediction. The accuracy of BER prediction using this PDF is demonstrated by computer simulation of digital radio transmission over Suzuki fading channels

Keywords

digital radio; error statistics; fading; gamma distribution; land mobile radio; multipath channels; time-varying channels; Suzuki PDF; Suzuki fading channels; bit error rate; channel model; digital radio transmission; fast fading; generalised gamma PDF; improved fading distribution; mobile radio; narrowband fading processes; probability distribution functions; shadow fading; short-term channel variations;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19981991

Filename

689417