Introduction Over the pastdt]II7 wireless communication networks have experienced tremend--5 growth. The future wireless networks willexpand their services to mobile systems from voice service to the multimedz services such as voice, dce, graphics, low resolutionvidol etc., using ad anced multiple access techniques ,. Direct Sequence Co d Division Multiple Access(DS-CDMA) is a majorcandR5W] for future wireless access systems. The future wireless applications will also be more bandH7W]z5-- tensive,and population of wireless users will grow continuously at high rate. On the other hand theradH spectrum allocated to wireless communication ishard: to be extend]z which makes the Call Adll]5W7 Control(CAC) one of the essential network functions of wireless networks to provid the multimedl services. CAC is usuallybased on thethreshold mechanism whose purpose is to ensure the performance of users in the system satisfies their specified QoSs. As a refere
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