Performance evaluation of random power capture on mobile communications

Power assignment schemes are man-made methods to enhance the capture e!ect of radio communications. In a previous study, Wen and Yang investigated the combined capture e!ect of the "xed power assignment scheme, Rayleigh fading, and near}far e!ect on the performance of packet radios. The performance analysis was limited to an in"nite population environment. This assumption is reasonable for a conventional packet radio system with a vast service area. However, for a cellular mobile system, a "nite population model should be used. In this paper, we analyse the combined natural and man-made capture e!ect on the performance of a cellular system with "nite population in each cell. A random power assignment scheme is adopted to produce the man-made capture. The system throughput and delay are carried out by a Markov model. Some numerical calculations are used to demonstrate the degree of performance improvement. Copyright 2001 John Wiley & Sons, Ltd.