Performance Analysis of MRC 2D-RAKE Receivers in Correlated Nakagami-m Fading

Kaizhi HUANG  Jing WANG  

IEICE TRANSACTIONS on Communications   Vol.E87-B   No.12   pp.3663-3672
Publication Date: 2004/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
bit error rate (BER),  outage probability,  2D-RAKE receiver,  maximal ratio combining,  correlated Nakagami-m fading,  multiple access interference (MAI),  

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In this paper, the bit error rate (BER) and the outage probability are presented for a maximal ratio combining (MRC) two-dimensional (2D)-RAKE receiver operating in a correlated frequency-selective Nakagami-m fading environment with multiple access interference. A simple approximated probability distribution function of the signal-to-interference-plus-noise ratio (SINR) is derived for the receiver with multiple correlated antennas and RAKE branches in arbitrary fading environments. The combined effects of spatial and temporal diversity order, average received signal-to-noise ratio, the number of multiple access interference, angular spread, antennae spacing and multi-path Nakagami-m fading environment on the system performance are illustrated. Numerical results indicate that the performance of the 2D-RAKE receiver depends highly on the operating environment and antenna array configuration. The performance can be improved by increasing the spatio-temporal diversity gains and antenna spacing.