Outage Probability Comparison of MRC, EGC and SC Receivers over Short Term Fading Channels

Abstract: In this paper, wireless communication systems with maximal ratio combining (MRC) receiver, equal gain combining (EGC) receiver and selection combining (SC) receiver operating over short term fading channels are considered. In analyzed channels, received signal experiences Rayleigh multipath fading. Probability density functions (PDF), cumulative distribution functions (CDF) and level crossing rate (LCR) of output signals are efficiently evaluated and obtained expressions are in closed form. Results for the outage probability are graphically shown to present the influence of diversity techniques on system performance. It is shown that MRC has the best performance and SC technique gives lower performance than MRC and EGC diversity techniques.