基于种群技术的数字波束赋形算法分析

Digital beamforming algorithms based on population method

在移动通信中采用波束赋形算法,可以更好地利用天线的空分性能和发射功率,但是需要考虑算法的收敛速度和计算速度。如果移动用户穿过蜂窝小区时速度很快,那么即使是短时间内位移量也很大。而赋形算法如果收敛慢或者没有检测到这个变化,就会仍然针对原来的问题进行计算,从而跟踪不到用户,影响通话。介绍了移动通信对波束赋形算法的要求,分析了两种基于种群技术的数字波束赋形算法。

The high performance of spatial division and low transmitting power would be obtained if beamforming algorithms are adopted in mobile communication. The speed of convergence and calculation should be taken into consideration, because when a mobile user passes quickly over cells, the change of his position is large. If beamforming algorithms react slowly or even fail to detect the change, the system may lose the track of mobile user. In this paper, the requirements bearnforming algorithm in mobile system are introduced and beamforming algorithms based on population method are analyzed.