摘要
介绍了移动通信中的空时码,针对多天线系统提出了空时分组码的正交设计理论,可以采用高效的调制技术(QAM,PSK),由多天线同时发射。接收端采用最大似然译码可以获得最大的分集增益。并因空时码有很高的频谱利用率,从而使空时码在未来移动通信及无线局域岗中得到广泛的应用。
Space-time code in mobile communication system, and orthogonal desing in multiple-antennas scneme are dicsussed. By the methods, data is encoded using a space-time block code and is split into several streams which are simultaneously transmitted by antennas. So a maximum-likelihood decoding algorithm can be used at the receiver to achieve the maximum diversity order.
出处
《科学技术与工程》
2006年第2期198-200,共3页
Science Technology and Engineering
关键词
空时码
正交设计
调制
space-time code orthogonal design modulation
