Capacity and coverage of power controlled CDMA cellular systems

Abstract

Coverage and capacity are among the ambitious challenges to be met by the third generation (3G) systems for successful deployment of its services to both residential and commercial subscribers. This paper reports on the performance study of CDMA systems in relation to an optimum step-regulated SNR-based transmitted power. We derive the system model and present a computer simulation to optimize the transmitted power for each user and maintain the required λb N 0 (signal-to-noise ratio) for satisfactory call quality by achieving a minimal λb N 0 for every user with an acceptable channel performance. We observe from the simulation that SNR based power control with updating step-size of 0.8dB provides acceptable system availability and stability. JONAMP Vol. 11 2007: pp. 605-614