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Blind Channel Estimation with Lower Complexity Algorithm for OFDM System

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Author(s): Wensheng Zhu | Youming Li | Yanjuan Lu | Ming Jin

Journal: Journal of Networks
ISSN 1796-2056

Volume: 6;
Issue: 5;
Start page: 783;
Date: 2011;
Original page

Keywords: OFDM | Cyclostationarity | Blind channel estimation

ABSTRACT
Fast and reliable channel estimation is very important for wireless communication transmission. This paper addresses blind channel estimation for OFDM systems. A novel One-Cycle blind channel estimation algorithm based on cyclostationarity properties of OFDM signal is proposed in this paper, the new algorithm is formed from using the two related z-transform values of delay parameter. Furthermore, a lower complexity algorithm based on partial spectrum information can further reduce computational complexity. Computer simulation results verify that the performance of the proposed One-Cycle algorithm is superior to that of the Two-Cycle algorithm. Although the lower complexity One-Cycle algorithm has some performance loss in high SNR region, its computational complexity is dramatically reduced
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