使用智能天线的MMSE接收机结构  

A Modified MMSE Receiver Combining with Smart Antenna

作　　者：肖化武[1] 谭泽富[1] 刘元安[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《通信技术》2002年第4X期6-7,13,共3页Communications Technology

基　　金：国家自然科学基金(69972006);教育部博士点基金资助。

摘　　要：讨论了使用智能天线的MMSE接收机结构。基于MMSE接收机比传统的接收机复杂的情况,故将智能天线选择在中频加权,而智能天线的权值则定在基带进行DOA估计来获得。仿真表明,使用智能天线后系统的性能得到了很大的提高。仿真还发现,同时采用相位补偿和deci-sion-directed技术,系统不能自动更正相反相位的误差。An implementation of a modified MMSE receiver combining with smart anten na is intro-duced in this paper.Because MMSE rec eiver is more complex than tradition al receiver,we adjust weights in IF while calculating weight in baseband after having been dispread using matching filter.The structure shows good performance.However,jo int using phase adjusting and decision -directed technique,it is easy to lose phase loop.Moreover,it is difficult to correct it without other technique.

关 键 词：智能天线 MMSE接收机 修改的训练序列 DOA 

分 类 号：TN85[电子电信—信息与通信工程]