Performance analysis of channel estimation in OFDM systems

Author

Jihyung Min ; Park, Jeongho ; Hong, Daesik

Author_Institution

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

Volume

7

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

4864

Abstract

We investigate a practical pilot design for indoor channels with an analysis of channel estimation for block and comb-type pilot arrangements. For the pilot design over indoor channels, the performance is determined by the tradeoff between the interpolation error by frequency selectivity of the channel and the noise reduction by the interpolator, compared to the Doppler effect. Results show that the performance of channel estimation for the comb-type pilot symbol, with respect to the derived criterion, outperforms that of the block-type pilot symbol for indoor channels, whereas it is a slow-fading environment.

Keywords

Doppler effect; OFDM modulation; channel estimation; indoor radio; interference suppression; interpolation; random noise; Doppler effect; OFDM systems; block-type pilot symbol; channel estimation; comb-type pilot symbol; frequency selectivity; indoor channels; interpolation error; noise reduction; pilot design; pilot tones; slow-fading environment; Channel estimation; Cities and towns; Doppler effect; Information technology; Interpolation; Mean square error methods; Noise reduction; OFDM; Performance analysis; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1405020

Filename

1405020