作　　者： ; ; ; ;

机构地区： 北京邮电大学

出　　处： 《电子学报》 2000年第z1期110-113,共4页

摘　　要： 提高频率利用率一直是移动通信系统中的研究热点 ,而近年来提出的空时码又是其关键技术之一 .从当前的研究情况来看 ,空时码技术主要分为以下两大类 :一是分层空时码 (LST) ;二是基于发射分集的空时分组码和空时格码 .由于空时码具有良好的频带利用率及性能 ,3GPP已将空时分组码作为一可选方案列在所提规范之中 .相信在不远的将来 ,空时码必将广泛应用于未来的移动通信系统 . To improve frequency efficiency is always a hotspot in mobile communication systems.One of the key technologies proposed recently is space-time code.According to the up-to-date researches,space-time code is divided into two main categories.One is the layered space-time code;the other includes space-time block code and space-time trellis code which are based on transmit diversity.Because of good spectrum efficiency and performance,space-time code has been proposed as an optional scheme in 3GPP specification.We can imagine that space-time code will be widely applied in mobile telecommunication systems in the near future.

关 键 词： 空时码 分层空时码 发射分集

领　　域： [电子电信]