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http://dx.doi.org/10.3745/KIPSTC.2005.12C.5.665

Pilot-Aided Channel Estimation for OFDM System Using Wavelet Transform and Interpolation  

Kong Hyung-Yun (울산대학교 전기전자정보시스템공학부)
Khuong Ho Van (울산대학교 전기전자정보시스템공학과)
Nam Doo-Hee (울산대학교 전기전자정보시스템공학과)
Publication Information
The KIPS Transactions:PartC / v.12C, no.5, 2005 , pp. 665-672 More about this Journal
Abstract
We present a novel pilot-aided channel estimation method for OFDM (Orthogonal Frequency Division Muitiplexing) system using WT(Wavelet transform) and interpolation. Due to excellent AWGN (Additive White Gaussian Noise) cancellation capability of n, pilot channels are estimated quite exactly and then, Dey are used in 2-degree polynomial interpolating the other remaining data symbol channels. The simulation results for Short WATM (Wireless Asynchronous Transfer Mode) channel show that the degradation in BER (Bit Error Ratio) performance of OFDM system iか this estimator is negligible compared to the case of perfect knowledge of CSI (Channel State Information).
Keywords
OFDM; Wavelet Transform; Channel Estimation; MMSE;
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