WCDMA基带处理中的多径解调研究  

Researching of the Demodulated Multi-path in WCDMA Baseband Processing

作　　者：曹如球[1] 朱如鹏[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《无线电通信技术》2007年第4期28-30,共3页Radio Communications Technology

摘　　要：为解决由于移动通信多径传播造成移动台接收机收到时强时弱起伏信号的不利因素,3G系统采用了Rake接收机技术。就超强径的检测、门限计算方法、多径峰值搜索和多径调整方法提出独特的设计思路。并根据当前解调多径位置和搜索的多径位置信息,对解调多径进行适当调整,保证多径搜索器始终在多径可能的范围内进行搜索,大大减小了由于移动用户终端(UE)的移动等因素造成的多径信号偏移对Rake接收性能的影响。In order to overcome the disadvantages of the undulation signals received by the mobile stations, 3G system adopts Rake＇s radio technique.This paper proposes a distinctive design focusing on super powerful path examination, threshold computational method, multi-path peak value seeking and multi-path adjust means. Moreover, on the basis of present demodulated multi-path place and seeking multi-path information,suitable regulation over the demodulated multi-path is performed to ensure the multi-path to be seeked within the probable limit place so as to minimize the effect of multi-path signal offset on Rake＇s receiving performance caused by user equipment （UE）.

关 键 词：RAKE 超强径 多径 门限 

分 类 号：TN929.5[电子电信—通信与信息系统]