Capacity Enhancement of WCDMA Network Using Utility based CAC Scheme with AMR for different Decoding Scheme

The wide-band code division multiple access (WCDMA) based 3G and beyond cellular mobile wireless networks are expected to provide a diverse range of multimedia services to mobile users with guaranteed quality of service (QoS). To serve diverse quality of service requirements of these networks a new radio resource management strategies for effective utilization of network resources is required. For that Adaptive Multi-Rate (AMR) will be used for voice applications in universal mobile telecommunication System (UMTS) systems where high spectral efficiency and system stability are required while guaranteeing a good speech quality. To investigate the trade-off between the system resource utilization and the provided quality of voice services, by proposing a method that considers both aspects of quality and capacity for the optimal assignment of speech data rates in 3rd generation cellular systems in this paper. So a new Call Admission Control (CAC) scheme is proposed to enhance capacity of WCDMA network based on the utilization services with AMR for different decision decoder. The model of this network is valid for the real-time (RT) and non-real-time (NRT) calls having different data rate. Simulation results demonstrate the capacity of the network using utility based CAC scheme with soft decision decoder is higher than that of hard decision decoder.