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The performance of integrated voice/data, wireless DS-CDMA networks is studied. Due to the specific nature of the multiplexing method for CDMA networks, the performance of transmission services depends on the number of active users in the network. Bit error rate formulae for voice and data calls are obtained as functions of the numbers of active voice and data calls. The blocking probability of voice calls is determined for a call access administration strategy with preemptive priority for voice calls. The improvement in the performance of data calls as a result of the application of ARQ techniques is examined. Formulae for the virtual transmission rate of data calls are derived. The article provides an approach to understanding the complex relationship between the grade of service and the number of active users in CDMA networks. Based on the results, a bandwidth management strategy is proposed for CDMA networks transporting multimedia services. In order to mitigate the congestion of data calls under fully loaded cell conditions, a throttling back rate reduction method is studied.>
Guo et al. (Tue,) studied this question.
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