用于WCDMA系统的MMSE接收机的功率与数据速率相结合的分配算法

A Joint Power and Rate Allocation Scheme for MMSE Receiver in WCDMA Systems

该文针对3GPP WCDMA系统的反向链路,提出了一种基于MMSE接收机的功率和数据速率相结 合的控制算法。该算法可以保证用户在达到目标信干比的同时,减小平均发射功率、加快收敛速度,从而提 高系统的整体性能。仿真结果验证了所提出方案的正确性和优化算法的有效性。采用该文提出的算法,与 MMSE功率控制算法比较,系统容量可增加近10％,而收敛速度可提高30％左右。

A combined power control and data rate adjustment scheme with Minimum Mean Square Error (MMSE) receiver for the 3GPP Wideband Code Division Multiple Access (WCDMA) reverse link is proposed. It can guarantee target SIR while keeps transmit power at the minimum level and faster convergence, resulting an optimal overall system performance. Computer simulation shows that the proposed scheme is appropriate and the optimization algorithm is effective and correct. Simulation results show that, using the proposed algorithm, the capacity of system is increased by about 10% and the speed of convergence is sped up by about 30 % compared with those obtained using MMSE power control algorithm.