Capacity Bounds of Finite Dimensional CDMA Systems with Power Allocation, Fading, and Near-Far Effects

This paper deals with fading and/or near-far effects with or without power control on the evaluation of the sum capacity of finite dimensional Code Division Multiple Access (CDMA) systems. CDMA systems under consideration have binary or finite non-binary inputs and signature matrices. Important results of this paper are that the knowledge of the received power variations due to input power differences, fading and/or near-far effects can significantly improve the sum capacity.