The investigation on two-dimensional pilot-symbol-aided channel estimation method for OFDM system  

作　　者：孙居颖 Zhang Yanhua 

机构地区：[1]College of Electronic Information ＆ Control Engineering, Beijing University of Technology, Beijing 100022, P.R. China

出　　处：《High Technology Letters》2008年第4期364-369,共6页高技术通讯（英文版）

基　　金：the High Technology Research and Development Programme of China(No.2002AA123041);the National Natural Science Foundation of China(No.90104013);Beijing Municipal Science &.Technology Commission(No.KM200610005018)

摘　　要：Channel estimation for orthogonal frequency division multiplexing （OFDM） system has attracteo widespread attention. In this paper, a novel efficient two-dimensional （2-D） channel estimation algorithm based on fast Fourier transform （FFT） is proposed for a time-variant, frequency-selective wideband wireless channel. Both theoretical analysis and simulation results are addressed in the paper. The simulation results prove that the proposed algorithm has simpler implementation, better performance and wider application than other traditional deeision-direeted algorithms.Channel estimation for orthogonal frequency division multiplexing (OFDM) system has attractedwidespread attention.In this paper,a novel efficient two-dimensional (2-D) channel estimation algorithmbased on fast Fourier transform (FFT) is proposed for a time-variant,frequency-selective wideband wire-less channel.Both theoretical analysis and simulation results are addressed in the paper.The simulationresults prove that the proposed algorithm has simpler implementation,better performance and wider appli-cation than other traditional decision-directed algorithms.

关 键 词：orthogonal frequency division multiplexing （OFDM） fast Fourier transfoml （FFF） channel estimation 

分 类 号：TN919.3[电子电信—通信与信息系统]