最优时空滤波器功率控制算法及仿真

Power Control Algorithm and Simulation of Optimization Temporal and Spatial Filter

CDMA系统容量是干扰受限的,通过功率控制、多用户检测(时间滤波)和接收波束成形(空间滤波)三种方法的复合使用可以增加CDMA系统的容量。若在时域和空域对上述方法联合处理,比起传统的只在时域或空域进行滤波,在发送的总功率上可获得较大的节省。介绍了最优时空滤波及功率控制原理,通过实例对功率控制算法进行仿真。

CDMA systems are interference limited.Several methods through power control,multi-user detection(temporal filtering)and receiver beam-forming (spatial filtering) can increase the capacity of CDMA systems.Using three methods in temporal and spatial domains,the significant saving in total transmit power can be ob-tained if filtering in both domains is utilized and compared with conventional power control arithmetic (optimalpower control and filtering in only one domain).The optimization temporal and spatial filter and principle of pow-er control are introduced, and simulating of power control algorithm is made by illustration.