“Performance of Soft Handoff in CDMA”

Abstract

This report is based on analysis on the performance of a soft handoff algorithm of the type that has been proposed in the IS-95 CDMA standard. It involved a brief study of the various parameters affecting the handoff procedure. It also includes a Matlab implementation of the received power(with Gaussian noise) versus the distance in the soft handoff case for a mobile moving between two base stations separated by distance d, along a straight line with fixed velocity. In addition to this a theoretical study is done which provides quantification for the tradeoff between diversity advantage and resource utilization. The results can be used to gain insight and help select the appropriate handoff thresholds. This algorithm may be extended to accommodate more stations and interference factor could also be considered.