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A Subspace Method for Blind Channel Estimation in CP-free OFDM Systems
Xiaodong Yue, Xuefu Zhou
Pages - 12 - 18     |    Revised - 31-03-2011     |    Published - 04-04-2011
Volume - 5   Issue - 1    |    Publication Date - March / April 2011  Table of Contents
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KEYWORDS
OFDM, Channel Estimation, Dispersive Channel, Wireless Communications
ABSTRACT
In this paper, a subspace method is proposed for blind channel estimation in orthogonal frequency-division multiplexing (OFDM) systems over time-dispersive channel. The proposed method does not require a cyclic prefix (CP) and thus leading to higher spectral efficiency. By exploiting the block Toeplitz structure of the channel matrix, the proposed blind estimation method performs satisfactorily with very few received OFDM blocks. Numerical simulations demonstrate the superior performance of the proposed algorithm over methods reported earlier in the literature.
CITED BY (3)  
1 Pirsiavash, A., & Emadi, M. J. (2015, May). A simple channel estimation via biasing OFDM symbols. In Electrical Engineering (ICEE), 2015 23rd Iranian Conference on (pp. 268-273). IEEE.
2 Pirsiavash, A., & Emadi, M. J. (2015, May). Rician channel characterization in OFDM systems. In Electrical Engineering (ICEE), 2015 23rd Iranian Conference on (pp. 303-307). IEEE.
3 Lenin, S., & Malarkkan, S. (2014).An extensive review of significant researches on channel estimation in mimo-ofdm. journal of theoretical & applied information technology, 64(2).
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Dr. Xiaodong Yue
- United States of America
yue@ucmo.edu
Dr. Xuefu Zhou
- United States of America