Traffic-Based Nonlinear Power Control in Multimedia Wideband Code Division Multiple Access Systems
Li Ying,Zhu Shihua,Liu Pei
(Xi'an Jiaotong University,Xi'an 710049,China)

Abstract: A traffic-based nonlinear power control algorithm is developed for the uplink of multimedia wideband code division multiple access (CDMA) systems. By satisfying the requirements of average signal-to-interference ratio and outage probability, the minimum power of each traffic type received at base station is derived by iteration. As a result, the system capacity is maximized and high quality of service (QoS) is guaranteed. The sim ulation of a system involving three traffic types confirms the advantage of the algorithm and shows the trade-off between QoS requirement and system capacity.
Keywords: code division multiple access; power control; multimedia