Frequency offset tracking algorithm for orthogonal frequency divisionmultiplexing systems using a pilot sub carrier |
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引用本文: | TAN Xiao heng and CHEN Li.Frequency offset tracking algorithm for orthogonal frequency divisionmultiplexing systems using a pilot sub carrier[J].保鲜与加工,2008(9):1050-1053. |
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作者姓名: | TAN Xiao heng and CHEN Li |
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作者单位: | College of Communication Engineering, Chongqing University, Chongqing 400030, P.R. China;College of Communication Engineering, Chongqing University, Chongqing 400030, P.R. China |
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摘 要: | To improve the estimation precision of the carrier frequency offset in a multi path fast fading environment, the performance of the frequency offset tracking algorithm using a pilot sub carrier was studied extensively. Comparing with the frequency offset tracking algorithm based on a cyclic prefix, a frequency offset tracking algorithm using a pilot sub carrier can not only derive better frequency offset tracking performance in the AWGN channel, but also obtain exact frequency offset estimation in multi path fast fading channels. The algorithm using a pilot sub carrier therefore is more suitable for frequency offset tracking in the multi path fast fading channels.
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关 键 词: | orthogonal frequency division multiplexing (OFDM) frequency synchronization pilot sub carrier cyclic prefix (CP) |
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