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In this paper, we examine the traditional power control and associated access control schemes in cellular CDMA systems and analyze their effectiveness for bursty data traffic. We propose a novel access/admission control scheme based on a probabilistic channel usage framework. Simulation results show that the proposed scheme could improves system capacity considerably without QoS degradation. Compared with existing access control schemes, the algorithm proposed in this paper improves the systemdoi:10.1109/wcnc.2003.1200641 dblp:conf/wcnc/ChenK03a fatcat:r2t3hd2tvbeeli7ubs2siexin4