基于旋转不变子空间的垂直分层空时码  

Vertical Layered Space Time Coding Based on Rotational Invariant Subspace

作　　者：赵铮[1] 殷勤业[1] 张建国[1] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049

出　　处：《西安交通大学学报》2003年第4期384-387,395,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目 (60 2 72 0 71) ;教育部博士点基金资助项目 (2 0 0 2 0 6980 2 4)

摘　　要：提出一种基于旋转不变子空间的垂直分层空时码及其直接信号检测算法 .通过构造范得蒙分层空时码 ,可将阵列信号处理的思想应用到空时码中 ,利用空时相关阵的特征结构 ,从空时信号的旋转不变子空间中解得发射序列 ,实现了无需信道信息和导频的信号检测 ,有效地节约了估计信道时占用的频带资源 .仿真结果表明 。On the symbol detection of layered space-time codes, it is assumed that the perfect channel estimations are available at the receiver. A subspace based vertical layered space-time code is proposed for symbol detection when neither the transmitter nor the receiver has access to channel state information. It addresses the space-time code from both an array signal processing and a space-time coding perspective. With the special structure of Vandermonde layered space-time code and by exploiting the eigen-structure of the space-time correlation matrix, the rotational invariant subspace of signal is worked out and a closed-form symbol estimation is accomplished from the subspace without training symbols and channel state information, which increases spectral efficiency. The Monte Carlo simulations show that the performance of this algorithm can approach the performance of the detector with the perfect channel state information.

关 键 词：分层空时码 阵列信号处理 子空间方法 盲符号检测 

分 类 号：TN911.25[电子电信—通信与信息系统]