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http://dx.doi.org/10.7840/KICS.2011.36C.7.467

A Modified Pilot Symbol based Channel Estimation Technique Using Cross-Correlation for OFDM Systems  

Wee, Jung-Wook (전자부품연구원 모바일단말 연구센터)
Cho, Yong-Soo (중앙대학교 전자전기공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.7C, 2011 , pp. 467-474 More about this Journal
Abstract
The performance of pilot-symbol-assisted channel estimation widely used for OFDM systems is degraded due to the small number of pilot symbols used for higher transmission efficiency. In this paper, we propose a pilot symbol based channel estimation using cross-correlation to improve the estimation performance of the OFDM system with small number of pilot symbols. The proposed technique detects a data symbol using the channel estimated by the pilot symbol and estimates the channel using the estimated data symbol and the pilot symbol. It is shown by computer simulations that the proposed technique outperforms the conventional pilot symbol assisted estimation technique.
Keywords
channel estimation; OFDM; cross-correlation; pilot based;
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