Distribution of SIR and performance of DS-CDMA systems in lognormally shadowed Rician channels

Author

Tjhung, Tjeng Thiang ; Chai, Chin Choy

Author_Institution

Centre for Wireless Commun., Singapore

Volume

49

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1110

Lastpage

1125

Abstract

New closed form expressions for the probability density function and the cumulative distribution function of the ratio of L_S Rician signals to L_I Rician interferers, so-called signal-to-interference (SIR) power ratio, are derived. These SIR distributions are then used to evaluate the error probability and capture probability of direct sequence code division multiple access systems operating in Rician faded channels with lognormal shadowing. The influence of various system parameters such as the Rice K factor, shadowing spread, number of interferers, and spread spectrum processing gain on the system performance are analyzed and discussed

Keywords

Rayleigh channels; Rician channels; cellular radio; code division multiple access; error statistics; radiofrequency interference; spread spectrum communication; DS-CDMA systems; L_I Rician interferers; L_S Rician signals; Rice K factor; Rician faded channels; SIR; capture probability; closed form expressions; cumulative distribution function; direct sequence code division multiple access systems; error probability; lognormal shadowing; lognormally shadowed Rician channels; performance; probability density function; shadowing spread; signal-to-interference power ratio; spread spectrum processing gain; Direct-sequence code-division multiple access; Distribution functions; Error probability; Multiaccess communication; Performance gain; Probability density function; Rician channels; Shadow mapping; Spread spectrum communication; System performance;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.875218

Filename

875218