LEVEL CROSSING RATE OF MACRODIVERSITY SC RECEIVER WITH TWO MICRODIVERSITY SC RECEIVERS OVER GAMMA SHADOWED MULTIPATH FADING CHANNEL

In this paper, macrodiversity SC (selection combining) receiver with two microdiversity SC receivers is considered. Received signal experiences Gamma long term fading resulting in signal envelope power variation and short term fading resulting in signal envelope variation. Macrodiversity SC receiver reduces long term fading effects on system performances and microdiversity SC receivers reduce short term fading effects on system performances. Expression level crossing rate of macrodiversity SC receiver output signal envelope is calculated. Mathematical expressions are presented graphically to show the influence of Nakagami-m parameter severity and Gamma parameter severity on level crossing rate of proposed system

LEVEL CROSSING RATE OF MACRODIVERSITY SYSTEM OVER COMPOSITE GAMMA SHADOWED ALPHA-KAPPA-MU MULTIPATH FADING CHANNEL

In this paper macrodiversity system with macrodiversity selection combining (SC) receiver and two microdiversity SC receivers operating over composite shadowed multipath fading environment is considered. Received signal is subjected simultaneously to gamma long term fading and α-κ-μ short term fading resulting in system performance degradation. Macrodiversity SC receiver reduces gamma long term fading effects and microdiversity SC receivers mitigate α-κ-μ short term fading effects. Analitical expression for average level crossing rate of proposed wireless mobile system represented as an infinite series is evaluated. Mathematical and numerical analysis are shown influences of gamma fading severity, α-κ-μ multipath fading severity, and Rician factor on average level crossing rate