一种提高TD-SCDMA弱信号检测精度的新方法  

A Novel Method in Improving Weak Signal Detection Accuracy for TD-SCDMA

作　　者：王庆华[1] 邹永庆[1] 王烁[1] 

机构地区：[1]中国电子科技集团公司第38研究所,安徽合肥230088

出　　处：《通信技术》2011年第7期60-62,共3页Communications Technology

摘　　要：TD-SCDMA系统中,存在同频强功率信号干扰弱信号的现象,当用户数据目增多时,这种干扰愈加严重,导致弱信号检测困难,检测准确度低。现提出了一种提高TD-SCDMA弱信号检测精度的新方法,该方法首先首先重建强干扰信号,然后将强干扰信号从接收信号中去除掉,重复该过程,直到得到需要的弱信号。这里对方法进行了仿真实验,结果证明这种方法能将弱信号从强干扰信号中准确分离出来,使得弱信号的同步、信道估计和测量结果变得更加可靠。The strong signal would interfere weak signal with the same frequency in TD-SCDMA system.This interference becomes worse when the number of users is large,and this makes it difficult to detect weak signal.A novel method in improving weak signal detection accuracy is proposed in this paper.The strong interference is rebuilt up first this method,then the strong interference is removed from the received signal,and the process is repeated until the desired weak signal is obtained.The simulation results indicate that this novel method could accurately detect weak signal from strong interference,thus making synchronization,channel estimation and measurement results of weak signal more reliable.

关 键 词：时分同步码分多址 弱信号 相关 

分 类 号：TN914.53[电子电信—通信与信息系统]