对信道过模型具有鲁棒性的基于线性组合-子空间法的信道盲辨识  

A Linear-Subspace Based Channel Identification Method Robust to Channel Over-estimation

作　　者：张立军[1] 乔艳涛[1] 张文军[1] 

机构地区：[1]上海交通大学图像通信与信息处理研究所,上海200030

出　　处：《上海交通大学学报》2004年第12期1966-1971,共6页Journal of Shanghai Jiaotong University

摘　　要：当信道被过估计时,用标准子空间法可得到多个线性独立的信道估计,而真正的信道向量处在这些线性独立解所张成的范空间内.通过引入约束条件,信道向量可以被唯一确定.在快速收敛的同时,对信道过估计具有很高的鲁棒性.When channel is over-estimated, multiple linear independent channel estimation are obtained using standard subspace method. The true channel vector lies in the range space spanned by these independent solutions. By a constrained condition, the true channel solution can be decided uniquely. The method converges fast and is robust to channel over-estimation.

关 键 词：信道盲辨识 信道阶数检测 信道均衡 

分 类 号：TN911.5[电子电信—通信与信息系统]