Performance analysis of channel estimation in OFDM systems

Author

Kim, Jihyung ; Park, Jeongho ; Hong, Daesik

Author_Institution

Dept. of Electr./Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

12

Issue

1

fYear

2005

Firstpage

60

Lastpage

62

Abstract

We investigate an analysis of channel estimation using an interpolation technique in orthogonal frequency division multiplexing systems. Then a criterion for the adaptive interval of pilot subcarriers is derived. The mean-square error (mse) of comb-type estimators is dominated by the length of channel delay and the interval of pilot subcarriers. Analysis shows that the mse performance of comb-type estimators with the adequate interval of pilot subcarriers is better than that of block-type estimator for indoor channels.

Keywords

OFDM modulation; channel estimation; delays; indoor radio; interpolation; mean square error methods; OFDM system; channel delay length estimation; comb-type estimator; indoor channel; interpolation technique; mean-square error; orthogonal frequency division multiplexing system; pilot subcarrier; Channel estimation; Delay estimation; Frequency division multiplexing; Frequency estimation; Interpolation; OFDM; Performance analysis; Robustness; Time varying systems; Wireless communication;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2004.839699

Filename

1369275