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In this work, we evaluate the performance of the downlink in a CDMA cellular system with a services mix (voice and high data-rate packet). The users that arrive to the system follow a Poisson process. The data service is WWW traffic and the transmission is made through code aggregation in burst mode. The focus of this work is not only in the performance of data users, but also in the impact on voice user's sharing the CDMA band. Call admission control is used to regulate the traffic load in the system. To maintain QoS requirements and to avoid excessive interference, power control is considered. We use a mix of static and dynamic simulations to evaluate the performance of the system (call blocking and dropout probabilities, capacity, coverage, packets delay and performance of burst admission). In the dynamic simulation we considered: mobility, soft handoff events and correlated shadowing.
Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st (Volume:5 )
Date of Conference: 30 May-1 June 2005