A system-theoretic foundation for blind equalization of an FIR MIMO channel system

被引:63
作者
Inouye, Y [1 ]
Liu, RW
机构
[1] Shimane Univ, Dept Elect & Control Syst Engn, Matsue, Shimane 6908504, Japan
[2] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA
来源
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS | 2002年 / 49卷 / 04期
关键词
blind equalization; blind signal separation; FIR MIMO systems; second-order statistics; linear prediction;
D O I
10.1109/81.995657
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The system-theoretic foundation for blind equalization of a finite-impulse response (FIR) MIMO channel system in the channel-filter setting is investigated. In this setting, a general definition of equalizable channel system is presented, and its characterization is given: Every equalizable channel system has an FIR irreducible-paraunitary factorization. Based on this fact, we show that any equalizable channel system can be reduced to a paraunitary FIR system by a filter, called a whitener. It is shown that one such whitener can be designed by a linear prediction-based approach. It is also shown that if the original FIR channel system has no transmission zero at the origin, then the above paraunitary FIR channel system is a static system.
引用
收藏
页码:425 / 436
页数:12
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