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Efficient Clock Synchronization Schemes for Enhancing Error Performance of OFDM Wireless Multimedia Communication Systems  

김동옥 (한국항공대학교 항공통신정보공학과)
윤종호 (한국항공대학교 항공통신정보공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.7, no.1, 2003 , pp. 69-74 More about this Journal
Abstract
In this paper, we propose the synchronization recovery algorithm which is suitable to wireless Multimedia of wireless channel situation which is being used OFDM signaling method. The basic of the suggested clock synchronization. restoration Algorithm is to getting the shock response of channel or getting the multipath strength profile through IFTT after the getting the frequency, response of deducted channel from channel deducted of receiver and to trace the location in the channel energy concentrated area of timing area. And it also analysis the start point of 64-QAM and 16-QAM if the sampling clock offset has the sample of ${\pm}$ 1-3, and we identified the occurance of performance deterioration when occures more than 2 samples of offset to compare with star point and BER performance in optimum sampling point result of BER performance checking, and we know that the recovery algorithm proposed algorithm also provide excellent synchronization characteries under frequency, selecting fading channel as result of simulation.
Keywords
synchronization; OFDM; symbol;
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