基于独立分量分析的实正交空时分组码盲识别  

Blind recognition of real orthogonal STBC based on independent component analysis

作　　者：赵知劲[1,2] 陈林[1] 王海泉[1] 沈雷[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]中国电子科技集团第36研究所通信系统信息控制技术国家级重点实验室,浙江嘉兴314001

出　　处：《通信学报》2012年第11期1-7,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60872092)~~

摘　　要：提出一种基于独立分量分析的正交空时分组码(OSTBC)盲识别方法。首先给出了接收信号模型,利用独立分量分析得到含有编码矩阵的虚拟信道矩阵,然后利用编码矩阵特性,证明得到正交空时分组码的虚拟信道矩阵的相关矩阵为对角矩阵;最后提出用于正交空时分组码识别的2个特征参数:稀疏度和方差。仿真结果表明,所提出方法能够较好地识别正交空时分组码。A method for blind recognition of orthogonal space-time block coding （OSTBC） based on independent component analysis （ICA） was proposed. Firstly, the model of received signal was given. And then independent component analysis technology was used to separate the virtual channel matrix which contains coding matrix information. Using the characteristics of coding matrix, it was proved that the correlation matrix of the virtual channel matrix in OSTBC communication systems was diagonal matrix. Finally, two characteristic parameters were proposed： sparsity and variance, which could recognize OSTBC. Simulation results demonstrated that the proposed method is able to identify OSTBC while achieves good performance.

关 键 词：MIMO系统 正交空时分组码 盲识别 虚拟信道矩阵 

分 类 号：TN911.7[电子电信—通信与信息系统]