Simulation study of a fixed wireless access system

This paper describes a fixed wireless local loop (FWLL) system designed to provide data and voice services to fixed users. The FWLL system uses electronically steerable base-station (BS) antennas that generate multiple narrow beams which hop around when communicating with terminals. The multiple access is provided by TDMA and the up/downlinks operate in a frequency division duplex (FDD) mode. The same frequency band is reused in all the cells. With the help of simulations we evaluate the system´s capacity which, in this context, is the number of serviceable terminals per cell for a given percentage of terminals that exceed a preset signal to interference ratio (SIR). We also study the effect of various antenna parameters on the system´s capacity. We show an improvement in capacity if a terminal has the ability to communicate with the BS to which it has the least path-loss instead of being required to always communicate with the BS located geographically closest