Evaluation of Diversity Effects on Mobile Radio System Disign

Masaharu HATA  Kota KINOSHITA  Kenkichi HIRADE  

IEICE TRANSACTIONS (1976-1990)   Vol.E64   No.5   pp.302-308
Publication Date: 1981/05/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Antenna and Propagation

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A simple method of evaluating diversity effects in the design of land mobile radio systems is introduced, and power reduction and spectrum utilization are discussed. First the processes for determining transmitter power and frequency reuse distance, which are very important factors in system design, are derived. In this derivation, the probability of a fade below a given threshold level and the probability of co-channel interference are calculated for systems operating in Rayleigh fading and lognormal shadowing environments. The probabilities are presented by simple form applicable to system design. Then, based on the derivation, a method of evaluating diversity effects is shown by taking the case of selection diversity. The results show how these effects can be taken into account in system design.