| Performance Analysis of STFT Based Timing Approach to OFDM Systems |
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| 作者姓名： | KUANG Yu-jun~ TENG Yong~ YIN Chang-chuan~ HAO Jian-jun~ YUE Guang-xin~ |
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| 作者单位： | 1. Chongqing University of Posts and Telecommunications，Chongqing 430005，P.R. China;2. School of Telecommunication Engineering，Beijing University of Posts and Telecommunications，Beijing 100876，P.R. China |
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| 基金项目： | ThisworkissupportedbytheNationalNaturalScienceFund (No. 60 1 72 0 52，90 1 0 4 0 1 8)andKeyProjectsof 863Program (No.2 0 0 1AA1 2 30 1 6) . |
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| 摘 要： | 1 IntroductionMuchinteresthasbeenfocusedonOrthogonalFrequencyDivisionMultiplexing (OFDM)inmanyareas,suchaswiredandwirelessapplications1～ 1 5] .Synchronizationinbothtimeandfrequencydo mainisacriticalprobleminOFDMsystems.WEILandSCHLEGELC ,etalhavediscussedtheeffectsofsynchronizationerrorsandcarrierfrequencyoff sets1～3] .ThemostremarkableworkbyBEEKJ3]isajointMLestimatoroftimeandfrequencyoffsetutilizingtheCyclicPrefix (CP)withouttheaidofadditionalpilots.ThenJOHANSSONS ,eta…
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Performance Analysis of STFT Based Timing Approach to OFDM Systems |
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| KUANG Yu-jun,TENG Yong,YIN Chang-chuan,HAO Jian-jun,YUE Guang-xin.Performance Analysis of STFT Based Timing Approach to OFDM Systems[J].The Journal of China Universities of Posts and Telecommunications,2003,10(4). |
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| Authors: | KUANG Yu-jun TENG Yong YIN Chang-chuan HAO Jian-jun YUE Guang-xin |
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| Abstract: | This paper mainly focuses on performance analysis of the previously proposed STFT based 2-D timing approach to OFDM systems and presents simulations results of its performance in AWGN and multipath fading environment and its robustness against the duration of Channel Impulse Response (CIR) and frequency offset. Simulation results suggest that a revised version of Short-Time Fourier Transform (STFT) can be used to greatly reduce computational complexity, especially at higher SNR. |
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| Keywords: | OFDM symbol timing Short-Time Fourier Transform (STFT) time-frequency spectrum synchronization |
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