Pilot-Assisted Channel Estimation for OFDM Systems in Time-Varying Multipath Channels

Author

Ito, Noboru ; Shimbo, Daisuke ; Maeda, Noboru ; Mishima, Hidetoshi ; Nakayama, Hiroki

Author_Institution

Adv. Technol. R & D Center, Mitsubishi Electr. Corp., Nagaokakyo, Japan

fYear

2014

fDate

14-17 Sept. 2014

Firstpage

1

Lastpage

5

Abstract

In this paper, a novel channel estimation technique is investigated to improve performance of pilot-aided mobile OFDM systems in time-varying multipath channels. The proposed method utilizes band dividing filters and Discrete Fourier Transforms (DFT) to separate and suppress aliases from desired signal. The aliases are detected by using the property of asymmetric channel power distribution. The simulation results demonstrate the robustness of the proposed method in time-varying multipath fading channels.

Keywords

OFDM modulation; channel estimation; discrete Fourier transforms; fading channels; filtering theory; multipath channels; time-varying channels; DFT; aliases detection; aliases suppression; asymmetric channel power distribution; band dividing filters; discrete Fourier transforms; pilot-aided mobile OFDM systems; pilot-assisted channel estimation technique; time-varying multipath fading channels; Channel estimation; Delays; Doppler effect; OFDM; Passband; Time-frequency analysis; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2014 IEEE 80th

Conference_Location

Vancouver, BC

Type

conf

DOI

10.1109/VTCFall.2014.6966132

Filename

6966132