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Analysis of multiple access interference in synchronous downlink CDMA systems with random signature sequences in AWGN and fading environments

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4 Author(s)
M. Moinuddin ; Electrical Engineering Department, King Fahd University of Petroleum & Minerals, KFUPM, Dhahran 31261, Saudi Arabia ; M. Deriche ; A. U. H. Sheikh ; A. Zerguine

In this work, exact analysis of the multiple access interference (MAI) for synchronous downlink CDMA systems is carried out for BPSK signals with random signature sequences in both additive white Gaussian (AWGN) noise and different fading environments, namely Nakagami and Rician. Two different scenarios are considered: one with equal transmitted powers while the other considers the case of unequal transmitted power. For both cases, the exact probability density function (pdf) of MAI plus noise is derived. Finally, a number of simulation results are presented to verify our theoretical derivations.

Published in:

Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on

Date of Conference:

12-15 Feb. 2007