A semi-empirical representation of antenna diversity gain at cellular and PCS base stations
- 1 June 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communications
- Vol. 45 (6) , 644-646
- https://doi.org/10.1109/26.592600
Abstract
Predictions of uplink space-diversity gain in the cellular and personal communications systems (PCS) bands (near 850 MHz and 1.9 GHz, respectively), suffer from incomplete mod- eling of multipath angular spread Using previously published measurements to reduce the gap, we show that (distance) and that diversity gains are about 2 dB higher for PCS than for cellular. HE correlation between received signals from two space- diversity receiving antennas at a mobile-radio base station tends to decrease with increasing antenna spacing measured in wavelengths. Thus, the space-diversity benefit in the uplink for the same physical spacing between two receiving antennas should be greater in the personal communications systems (PCS) band (near 1.9 GHz) than in the cellular band (near 850 MHz). The differential space-diversity benefit can contribute toward reducing the greater propagation loss of PCS. The purpose of this paper is to give quantitative predictions of this benefit, based upon an analysis of measured data.Keywords
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