LTE系统基于传输分集的信号检测的DSP实现  

DSP Implementation of Signal Detection Based on Transmit Diversity in LTE System

作　　者：张德民[1] 孟莎莎[1] 陈贝[1] 

机构地区：[1]重庆邮电大学重庆市移动通信技术重点实验室,重庆400065

出　　处：《自动化仪表》2014年第10期75-79,共5页Process Automation Instrumentation

基　　金：国家科技重大专项基金资助项目(编号:2012ZX03001024);重庆市科委重点实验室专项经费

摘　　要：信号检测是长期演进(LTE)系统接收端的一项重要技术,对系统的性能有着较大的影响。在LTE系统中,接收端的天线同时接收来自发送端的多个天线端口的数据,因此接收端必须采用信号检测算法还原发送端的数据。分析与研究了基于传输分集的信号检测算法,并着重讨论了空频编码法,提出了一种简单的DSP实现方案。该方案已成功应用于TD-LTE TTCN扩展测试集仪表开发项目中。Signal detection is one of the significant technologies for receiving terminal in long term evolution （ LTE ） system, it highly influencesthe system performance. In LTE system, the receiving antennas at receiving end simultaneously receive the data coming from multipletransmitting antenna ports, so it is necessary to use signal detection algorithm at the receiving end to restore the data from transmitting end. Thesignal detection algorithm based on transmit diversity is analyzed and studied, and the space frequency block coding （SFBC） method isdiscussed emphatically, and the simple DSP implementing scheme is proposed. The scheme has been successfully applied in development of theTD-LTE TrCN extended test suite instrumentation.

关 键 词：LTE 预编码 传输分集 信号检测 DSP实现 

分 类 号：TN929.5[电子电信—通信与信息系统]