Closed-form analysis for performance evaluation of soft handoff

Abstract

In this paper performance of soft handoff algorithm based on pilot signal strength measurements is studied. It has been observed that the available analytic expressions involve integration in infinite limit. The expressions containing such kind of integrals have been meticulously transformed into finite range equations. In soft handoff, probability of outage, number of base stations (BS) in the active set, and number of active set updates are some of the performance metrics commonly considered. Accurate closed forms for all these performance indicators have been proposed which simplifies the calculation of several other metrics entailing them. Moreover, the underlying system model takes into account of more than two BS (specifically three) extending the traditional two BS model towards more complex but realistic characterization of soft handoff performance analysis framework.