A queueing model for CDMA cellular networks using soft capacity

CDMA cellular radio networks are well known for their time-varying interference dependent capacity. However, many papers in the literature have used a single moment approach and assumed an average fixed value of CDMA capacity in mathematical analyses. In this paper we propose an analysis that takes into account the time-varying nature of CDMA capacity. We assume, from the central limit theorem, that the system interference is Gaussian and propose an expression for the system capacity. We then present a traffic model for a power controlled DS-CDMA network where only handoff calls are queued. Network performance is computed in terms of the carried traffic, the queue length and the probability of blocking new and handoff calls