Abstract
This paper describes the CDMAC, a new Medium Access Control (MAC) protocol for multimedia traffic in CDMA wireless networks. The protocol intends to extract the maximum capacity and flexibility out of the CDMA scheme and at the same time guarantee the expected QoS of different service types. CDMAC is able to maintain QoS requirements thanks to the shaping, policing and traffic differentiation performed by the scheduler. Moreover, an iterative algorithm, applied at the beginning of each frame, is used to find the optimal power vector for all mobiles present in the system, which maximize the system capacity. The basic constraint of the capacity maximization process is that the BER QoS of each connection should be fulfilled. Finally a distributed implementation, feasible in a practical scenario, is presented.
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