Telcos

CAC Schemes for Capacity Enhancement in WCDMA Systems

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Executive Summary

To support multiple Service class of different data transmission rate for multimedia application in wireless systems. WCDMA involves Orthogonal Variable Spreading Factor (OVSF) code technique. Call Admission Control (CAC) scheme of the system decides regarding admission of the call. In this paper, a new SIR- based CAC scheme for WCDMA system is proposed, so that the authors can control access of available resource for each service class. A new call request in the system will be accepted, based on the availability of the codes. CDMA system W-CDMA system suffers from code blocking problem to accommodate high data rate calls.

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