摘要
在WCDMA系统上行链路中 ,提出把智能天线与RAKE接收机相结合 ,利用上行链路的帧结构特征 ,将各时隙的导频符号的扩频序列作为阵列处理部分的LMS自适应算法更新阵元权矢量的参考信号 ,来解决CDMA系统反向信道的容量受限问题。仿真实验结果表明该方法能显著提高系统的容量 。
In the uplink of WCDMA system, the smart antenna arrays with RAKE receivers are used at the base stations. Accounting to the frame structure of WCDMA,in the array processing we use LMS adaptive algorithm, which uses the spreading sequences of pilot symbols of each slot as the reference signals for updating the weight vectors of antenna arrays. The simulation results show that the method is simple and practical and improves the capacity of the system greatly, and thus solve the capacity problem of the reverse channel of WCDMA system.
出处
《电波科学学报》
EI
CSCD
2002年第3期291-294,299,共5页
Chinese Journal of Radio Science
基金
中国工程物理研究院科学技术基金资助项目 (990 4 16 2 7)
