Optimum modulation and diversity for DS-SS communication over Rayleigh fading channels subject to pulse burst interference

Author

Ali, A.A.

Author_Institution

Coll. of Eng., Sultan Qaboos Univ., Muscat, Oman

Volume

141

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

237

Lastpage

240

Abstract

Results of optimum modulation and coding for MPSK and MDPSK signals transmitted over fading channels and subject to high level interference are presented. The author uses the exact expressions of the probability of error for the uncoded M-ary modulations. However, the analysis of optimum diversity (repetition code) is carried out by a Chernoff bound approximation. Simple expressions are derived to determine the optimum modulation and diversity in terms of the channel parameters. To examine the validity of approximations used throughout, exact analysis of the coded bit-error rate is found numerically, and the results are compared. It is concluded that the exact and the Chernoff bound analysis yield the same results for the optimum modulation and coding and there exist an optimum modulation and coding for each value of signal-to-noise ratio. The results are particularly useful for power and bandwidth limited channels

Keywords

approximation theory; coding errors; diversity reception; encoding; error statistics; fading; phase shift keying; radiofrequency interference; spread spectrum communication; telecommunication channels; Chernoff bound approximation; DS-SS communication; MDPSK signals; MPSK signals; Rayleigh fading channels; bandwidth limited channels; channel parameters; coded bit-error rate; error probability; optimum coding; optimum diversity; optimum modulation; power limited channels; pulse burst interference; repetition code; signal-to-noise ratio; uncoded M-ary modulation;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19941277

Filename

317996