Blind channel estimation for MIMO OFDM systems via nonredundant linear precoding

被引：39

作者：

Gao, Feifei ^{[1
]}

Nallanathan, A. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 119260, Singapore

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2007年 / 55卷 / 02期

关键词：

blind channel estimation; block precoding; multiple-input multiple-output (MIMO); multiple-input single-output (MISO); orthogonal frequency-division multiplexing (OFDM); subspace; wireless communications;

D O I：

10.1109/TSP.2006.885764

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：

Based on the assumption that the transmitted symbols are independent and identically distributed (i.i.d.), we develop a simple subspace-based blind channel estimation technique for orthogonal frequency-division multiplexing (OFDM) systems by utilizing nonredundant linear block precoding. A novel contribution is that the proposed method can be applied for scenarios, where the number of receive antennas is less than the number of transmit antennas, e.g., multiple-input single-output (MISO) transmissions, in which case the traditional subspace-based methods could not be applied. Further consideration that can eliminate the multidimensional ambiguity in channel estimation under multiple transmitter scenarios is also proposed. The numerical results clearly show the effectiveness of our proposed algorithm.

引用

页码：784 / 789

页数：6

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