Stefanovic C.   Djosic D.   Milic D.   Stefanovic M.  

Level crossing rate of macrodiversity system in the presence of k-µ multipath fading, Nakagami-m multipath fading and Gamma shadowing

Reporter: Djosic D.

Macrodiversity reception with macrodiversity selection combining (SC) receiver and two maximal ratio combining (MRC) receiver operating over shadowed small scale fading channel is considered. Signal at one MRC receiver experiences Gamma long term fading and Nakagami-m short term fading and signal at another MRC receiver experiences Gamma long term fading and k-µ short term fading. Closed form expression for level crossing rate of macrodiversity SC receiver output signal is calculated. This expression can be used for evaluation average fade duration of proposed system. The SC receivers reduces Gamma long term fading effects, the first MRC receiver reduces Nakagami-m short term fading effects and the second MRC receiver reduces k-µ short term fading effects on system performance. The influence of Gamma long term fading severity parameter, Gamma long term fading correlation coefficient, Rician factor of k-µ short term fading and Nakagami-m short term fading severity parameter on system performance is analysed and discussed.