| An Analysis of Interchannel Interference of OFDM Systems in Time-Varying Channel |
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| 引用本文： | ZHANG Jian-hua,ZHANG Ping(Wireless Innovation Technologies Laboratory (WTI Lab),Beijing University of Posts and Telecommunications,Beijing 100876,P.R. China). An Analysis of Interchannel Interference of OFDM Systems in Time-Varying Channel[J]. 中国邮电高校学报(英文版), 2003, 10(4) |
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| 作者姓名： | ZHANG Jian-hua ZHANG Ping(Wireless Innovation Technologies Laboratory (WTI Lab) Beijing University of Posts and Telecommunications Beijing 100876 P.R. China) |
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| 作者单位： | ZHANG Jian-hua，ZHANG Ping(Wireless Innovation Technologies Laboratory (WTI Lab)，Beijing University of Posts and Telecommunications，Beijing 100876，P.R. China) |
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| 基金项目： | ThisworkissupportedbyChina’sProject863 (No.2 0 0 1AA1 2 30 1 6)andbyETRI，Korea. |
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| 摘 要： | 1 IntroductionRecentlyOFDMtechniquehasregainedlotsofinterestforitspromisingtosupportbroadbandwire lessaccesssystems[1～ 4] .Comparedwithsingle car riersystems,OFDMsystemshavemanyobviousad vantages,suchasrobustnessagainstmultipathdelayspread,feasibilityinhardwareimplementation ,flexibilityinsubcarrierallocationandadaptabilityinsubcarriermodulation[5～6] .However,thepriorityofOFDMsystemscomesfromtheorthogonaldivi sionofbandwidth .Themoredivision ,thelongerthesymbolperiodisandthemorerobustt…
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An Analysis of Interchannel Interference of OFDM Systems in Time-Varying Channel |
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| ZHANG Jian-hua,ZHANG Ping. An Analysis of Interchannel Interference of OFDM Systems in Time-Varying Channel[J]. The Journal of China Universities of Posts and Telecommunications, 2003, 10(4) |
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| Authors: | ZHANG Jian-hua ZHANG Ping |
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| Abstract: | In this paper the Inter-Channel-Interference (ICI) caused by Doppler spread is analyzed in the discrete form for an Orthogonal Frequency Division Multiplexing (OFDM) system. By theoretic derivation it is verified that the ICI power of the flat channel is the same as that of the time dispersive channel with the assumption that the flat channel is a normalized Wide-Sense Stationary (WSS) stochastic process and the time dispersive channel is a normalized Wide-Sense Stationary and Uncorrelatd-Scatting (WSS-US) stochastic process. Furthermore, the analysis and simulation show that the ICI power is determined by the product of Doppler spread and OFDM symbol period. |
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| Keywords: | OFDM Time-Varying Channel(TVC) ICI |
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