Abstract
Link capacity is defined as the number of channels available in a link. In DS-CDMA cellular systems, this is limited by the interference present in the link The interference is affected by many environmental factors and thus the link capacity of the systems changes with the environment. In addition, since various traffic types mutually interfere with different amount, their different power levels affect the link capacity. Actual capacity of the systems must be evaluated accurately and call admission control (CAC) needs to be adapted to the actual capacity which varies with the environment. Since the capacity of CDMA system is limited by the reverse link we are concerned with the reverse link and analyze the actual link capacity for multimedia services under varying environments. The analysis results yield a CAC adaptive to dynamically varying environment for multimedia services and thus improve CDMA capacity significantly.
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