Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/68844
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dc.titleA joint blind timing and frequency offset estimator for OFDM systems over doubly selective fading channels
dc.contributor.authorMo, R.
dc.contributor.authorChew, Y.H.
dc.contributor.authorTjhung, T.T.
dc.contributor.authorKo, C.C.
dc.date.accessioned2014-06-19T02:53:51Z
dc.date.available2014-06-19T02:53:51Z
dc.date.issued2005
dc.identifier.citationMo, R.,Chew, Y.H.,Tjhung, T.T.,Ko, C.C. (2005). A joint blind timing and frequency offset estimator for OFDM systems over doubly selective fading channels. IEEE Vehicular Technology Conference 61 (2) : 1263-1267. ScholarBank@NUS Repository.
dc.identifier.issn15502252
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/68844
dc.description.abstractA novel joint timing and frequency estimator based on maximum likelihood (ML) criterion, is derived for OFDM systems over a doubly selective fading (time and frequency selective) channel. In this estimator, the unwanted channel fading gains and transmitted signals are modeled as unknown deterministic variables and extracted from the received signals employing linear minimum mean square error (LMMSE). An algorithm in closed form expressions is derived, with its implementation complexity comparable to the estimators proposed in [1]. Simulation results show our timing estimator performs significantly better than estimators reported in [1] in time invariant frequency selective fading channel, and our frequency estimator achieves a lower MSE than the estimators in [1] at higher SNR (≥ 15dB). For doubly selective fading channels, at high SNR (>20dB) and with only three OFDM symbols, our frequency estimator performs close to the estimator studied in [8] but the latter has employed 25 symbols. We also demonstrate how the performance of our algorithm changes with the increase in Doppler frequency spread. © 2005 IEEE.
dc.sourceScopus
dc.typeConference Paper
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.sourcetitleIEEE Vehicular Technology Conference
dc.description.volume61
dc.description.issue2
dc.description.page1263-1267
dc.description.codenIVTCD
dc.identifier.isiutNOT_IN_WOS
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