无线衰落信道的空时编码技术研究  

Research on Space-time Coding in Wireless Fading Channel

作　　者：高自新[1] 吴新华[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2011年第1期30-33,共4页Radio Communications Technology

摘　　要：移动无线通信是一种典型的衰落信道,空时编码技术是解决无线通信中信号衰落最有效的手段之一,简要介绍了移动通信系统中衰落对传输信号产生的4种效应,研究了移动衰落信道中的信道特性及衰落信号的分布特性。从空时编码技术原理出发,认真推导了空时编码系统的差错概率边界,分析了空时编码系统的误码性能,并以此为基础确定了最佳空时编码的设计准则,可为结合多天线系统的空时编码设计提供参考。Mobile wireless communication has a typical fading channel, and space-time coding technique is one of the most effective methods to solve the problem of channel fading in wireless communication. A brief introduction to four effects of transmission signal in mobile fading channel is given, and a study on the channel characteristics in mobile fading channel and the distributing characteristics of fading signal is presented in this paper. Based on the theory of space-time coding technique, the boundary of error probability is deduced and the error performance is analyzed in space-time coding system, based on which the design criterion of optimum space-time codes is determined, which may provide a reference for space-time code design based on multi-antenna system.

关 键 词：空时编码 衰落 矢量 矩阵 

分 类 号：TN911[电子电信—通信与信息系统]