LCR OF SC RECEIVER OUTPUT SIGNAL OVER α-κ-µ MULTIPATH FADING CHANNELS

Wireless mobile communication system with selection combining (SC) diversity receiver is analyzed. Received signal envelope experiences α-κ-µ short term fading resulting in system performance degradation. Level crossing rate (LCR) and average fade duration (AFD) of SC receiver output signal envelope is obtained as rapidly converging infinite series expressions. Numerical resulting are presented graphically to show the influence of transmission parameters, such are multipath fading severity, dominant component power and nonlinearity propagation parameter on observed LCR performance of dual SC

PERFORMANCE OF MACRO DIVERSITY WIRELESS COMMUNICATION SYSTEM OPERATING IN WEIBUL MULTIPATH FADING ENVIRONMENT

In this paper, we consider wireless mobile radio communication system with macro diversity reception. Signal is subject to Weibull small scale fading and Gamma large scale fading resulting in system performance degradation. Receiver uses macro diversity selection combining (SC) technique in order to reduce the impact of long term fading effects, and two micro diversity SC branches are used to mitigate Weibull short term fading effects on system performance. Probability density function (PDF), and cumulative distribution function (CDF), as well as level crossing rate (LCR) and average fade duration (AFD) of the SC receiver output signal envelope are evaluated. The obtained expressions converge rapidly for all considered values of Weibull fading parameter and Gamma shadowing severity parameter. Mathematical results are studied in order to analyze the influence of Weibull fading parameter and Gamma shadowing severity parameter on statistical properties of the SC receiver output signal