基于正交星座调制的速率为2的空时分组码(英文)  

Space-time block codes with rate 2 for orthogonal-constellation modulation

作　　者：尹训锋[1] 曾凡鑫[1] 葛利嘉[2] 

机构地区：[1]重庆通信学院,重庆400035 [2]重庆大学通信工程学院,重庆400044

出　　处：《重庆邮电学院学报（自然科学版）》2006年第4期455-458,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

基　　金：国家自然科学基金项目(60272083)~~

摘　　要：Alamouti空时分组码是2发射天线的全分集全速率的空时分组码。提出一种基于复信号星座的正交星座调制(OCM)方案,采用这种方案的编码效率为2,它是Alamouti码的2倍。仿真结果显示,功率归一化的OCM误码性能和BPSK信号星座调制的Alamouti码性能相近,但OCM的性能比QPSK调制的Alamouti码的性能要好。The Alamouti space-time block code provides full transmit diversity and full code rate for systems with two transmit antennas. In this paper, an orthogonal-constellation modulation （OCM） is proposed, which is based on the complex signal constellation of Alamouti scheme. The code rate of OCM is two. The code rate of OCM is two times that of BPSK Alamouti scheme. Simulation results show that the performances of power normalized OCM is equivalent to that of BPSK Alamouti scheme and better than QPSK Alamouti scheme＇s.

关 键 词：Alamouti空时分组码 正交星座调制 最大似然检测 信号星座 

分 类 号：TN911.22[电子电信—通信与信息系统]