Channel estimation for OFDM system with two training symbols aided and polynomial fitting

Authors:
Huang Chang Lee;Chao-Wei Chen;Shyue-Win Wei
Affiliations:
Graduate Institute of Communication Engineering, National Chi Nan University, Taiwan;Graduate Institute of Communication Engineering, National Chi Nan University, Taiwan;Department of Electrical Engineering, National Chi Nan University, Taiwan
Venue:
IEEE Transactions on Communications
Year:
2010

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Abstract

A time-varying channel estimation method for orthogonal frequency division multiplexing (OFDM) systems is presented. The presented channel estimation method employs two training symbols in combination with polynomial fitting, thus obtaining accurate estimation results under a large normalized Doppler frequency.