【摘要】 本文利用自适应天线阵列上行链路信号到达角估计信息,并结合导频辅助下行链路信道矩阵估计值,在前人提出的具有反馈特性的自适应发送阵列原理基础上,提出一种简单可行的宽带CDMA下行链路天线阵列波束成形权重计算方法,并进一步分析了到达角估计误差和信道信息反馈时延对权重计算的影响,最后给出系统误码率性能的计算机仿真结果。更多还原

【Abstract】 Based on the present technique on adaptive antenna array with feedback. A new weight estimation algorithm for downlink beam-forming on wide-band CDMA is proposed. According to this algorithm, estimation of direction of arrival (DOA) of uplink signals and the estimation of the channel matrix of downlink pilot signals are utilized to aid the weight estimation. The influence on the performance of downlink beam-forming by the error of DOA estimation and the delay caused by feedback are further analyzed. At last, simulation results concerning the performance of the down-link beam-forming are given.更多还原