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WCDMA is interference limited multiple access technique and mainly used for transmission of high data rate in the 3rd generation cellular and mobile networks. In conventional Call Admission Control (CAC) techniques, when a new call admit in the system to get admission, it checks whether the call is admitted or not on the basis of signal to interference ratio (SIR) and transmission power in the network. If the call is accepted it will create some interference to the ongoing calls during data transmission and reception. This new interference would degrade the performance of ongoing calls; hence the proper Resource Allocation with Call Admission Control in the network is very essential to maintain the communication with guaranteed quality of service (QoS). This paper proposes a novel approach for Resource Allocation with connection admission control (RA-CAC) to maintain present and future target throughput for entire duration of the system which is mainly based on the utility function. The simulation result shows that the proposed Throughput Based Resource Allocation Scheme with connection admission control algorithm can significantly increase packet delivery ratio with less delay and higher throughput.

Throughput Enhancement for Better QoS in WCDMA Networks