Blind channel estimation for precoded OFDM system

被引：0
|
作者：
Zhang, RF [1 ]
机构：
[1] Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA
来源：
2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5: SPEECH PROCESSING | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
An orthogonal frequency division multiplex (OFDM) system with block-precoding is studied. It is observed that the correlation matrix of the post-DFT data is equal to the direct-product of the channel vector multiplied element-by-element with the product of the precoding matrix and its Hermitian. Therefore, an element-by-element division of the post-DFT correlation matrix by the product of the precoding matrix and its Hermitian gives a rank-one matrix whose only singular vector coincides the channel vector up to a phase ambiguity. The design criteria of the precoding matrix is discussed.
引用
收藏
页码：469 / 472
页数：4
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