Title :
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
fDate :
7/1/2000 12:00:00 AM
Abstract :
New closed form expressions for the probability density function and the cumulative distribution function of the ratio of LS Rician signals to LI 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; LI Rician interferers; LS 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;
Journal_Title :
Vehicular Technology, IEEE Transactions on
