Windowed DFT based pilot-symbol-aided channel estimation for OFDM systems in multipath fading channels

Author

Yang, Baoguo ; Letaief, K.B. ; Cheng, Roger S. ; Zhigang Cao

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

2

fYear

2000

fDate

2000

Firstpage

1480

Abstract

We propose a windowed DFT based pilot-symbol-aided channel estimation method for orthogonal frequency division multiplexing (OFDM) systems. This method can reduce the aliasing error of the direct DFT based channel estimation method in the multipath fading channels that have non-sample-spaced path time delays. Furthermore, we compare the proposed channel estimator with the more complex MMSE channel estimator. The performance of the proposed method is close to the MMSE channel estimator

Keywords

OFDM modulation; delays; discrete Fourier transforms; fading channels; land mobile radio; multimedia communication; multipath channels; parameter estimation; personal communication networks; MMSE channel estimator; OFDM systems; aliasing error reduction; direct DFT based channel estimation; mobile multimedia transmission; multipath fading channels; nonsample-spaced path time delays; orthogonal frequency division multiplexing; pilot-symbol-aided channel estimation; windowed DFT; wireless personal communication systems; Channel estimation; Delay effects; Discrete Fourier transforms; Fading; Filters; Frequency domain analysis; Frequency estimation; Frequency response; Interpolation; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851372

Filename

851372