PERFORMANCE ANALYSIS OF MOBILE RADIO NETWORK WITH FIXED POWER ASSIGNMENT, RAYLEIGH FADING, AND NEAR-FAR EFFECTS OVER AWGN CHANNEL

The capture effect caused by some of power assignment, Rayleigh fading , and near-far effect, can improve the performance of random-access te chniques in mobile radio environment. Moreover, if we consider the ove rall effect of them, the system performance can be noticeably improved . In this paper, the combined effect of fixed power assignment scheme, Rayleigh fading, and near-far effect on the performance of slotted AL OHA are studied. Plus, the performance degradation caused by AWGN is a lso investigated. The type of signal capture to be considered is the o ne that a signal involved in a collision survives if its power level e xceeds the sum of the other signals participating in the same collisio n. Numerical calculations are used to demonstrate the degree of improv ement and degradation.