Time-varying channel estimation based on pilot tones in OFDM systems

Author

Hu, Die ; Yang, Luxi

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing, China

Volume

1

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

700

Abstract

The time-varying channel estimation methods for OFDM systems based on pilot tones are investigated. Grouped and equispaced pilot tones to estimate the channel impulse response (CIR) of some given moments are used. The CIR of other moments over one OFDM symbol is estimated by a new low-pass interpolation method proposed in this paper. The simulation results show that the normal mean-square error (NMSE) of the proposed method is smaller than the linear interpolation method and model-based interpolation method.

Keywords

OFDM modulation; channel estimation; interpolation; mean square error methods; time-varying channels; transient response; OFDM systems; linear interpolation method; low-pass interpolation method; model-based interpolation method; moment channel impulse response; normal mean-square error; pilot tones; time-varying channel estimation; Bandwidth; Channel estimation; Interpolation; Least squares approximation; OFDM; Parameter estimation; Robustness; Time domain analysis; Time-varying channels; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on

Conference_Location

Nanjing

Print_ISBN

0-7803-7702-8

Type

conf

DOI

10.1109/ICNNSP.2003.1279371

Filename

1279371