A new user mobility based adaptive power control in CDMA systems

Abstract

We propose a new closed-loop power control scheme for wireless mobile communication systems using an adaptive step size. The proposed scheme selects the basic power control step size by considering the speed of the mobile station and a variable step size by using instantaneous companding logic based on power control command bit patterns. We show its improved performance it in view of the standard deviation of received power at the base station in consideration of channel BER.