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Blind OFDM Synchronization Algorithm using Cyclic Correlation  

Park Byungjoon (연세대학교 전기전자공학과 정보통신 연구실)
Ko Eunseok (연세대학교 전기전자공학과 정보통신 연구실)
Kang Changeon (연세대학교 전기전자공학과 정보통신 연구실)
Hong Daesik (연세대학교 전기전자공학과 정보통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.1C, 2005 , pp. 92-98 More about this Journal
Abstract
In this paper, blind synchronization algorithm is developed for estimating jointly timing and frequency offset of OFDM system. The proposed estimator exploits the second-order cyclostationarity of received signals, and then uses the information of symbol timing and carrier frequency offset appeared in the cyclic correlation. As a bling estimator, the information of impulse response of channel and training symbols are not required. The performance of the proposed method is consistent in spite of channel conditions in mean squre error sense, and simulation results prove it. For more accurate estimaion, the method that averages cyclic correlation is applied. In this case, the performance of averaging method is better.
Keywords
Blind Synchronization; OFDM; Cyclic Correlation; Timing offset;
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