Title :
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
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;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2014 IEEE 80th
Conference_Location :
Vancouver, BC
DOI :
10.1109/VTCFall.2014.6966132
