Abstract

The evaluation of system capacity in Erlangs, based on the North American digital time division multiple access (TDMA) standards, is addressed. A Monte Carlo simulation study of two different frequency plans, namely, seven-cell clusters with three sectors/cell and four-cell clusters with six sectors/cell is presented. Cells are assumed to be equal in radius and the user density is assumed to be uniformly distributed among the cells. In the forward carrier (base station to mobile unit) a mobile unit is allowed to move uniformly in a target sector and the carrier to cochannel interference ratio from all cochannel base stations is evaluated at every location of the target mobile unit. The Erlang load versus the blocking probability is evaluated. The effect of the TDMA time slot assignment technique when a mobile unit requests service, is studied. The propagation path loss is assumed to be proportional to r/sup -n/ with log-normal shadowing. >

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