Integrated power control and rate allocation for radio resource management in uplink wideband CDMA systems

摘要

Power control and rate allocation are two radio resource management functions that can be used to enhance system utilization. In a time-varying environment, these functions need to be made adaptive. We consider certain implementation restrictions which cause deviations from ideal conditions in adaptive processing. An integrated power control and rate allocation approach to enhance system throughput is proposed. Simulation results show that by using closed-loop power control in conjunction with rate allocation in the presence of the Doppler effect and delay in feeding back channel state information (CSI), significant throughput and BER performance improvement over rate adaptation alone is obtained.