Performance analysis of channel estimation for OFDM systems with residual timing offset

Author

Park, Jeongho ; Kim, Jihyung ; Park, Myonghee ; Ko, Kyunbyoung ; Kang, Changeon ; Hong, Daesik

Author_Institution

Dept. of Electr. & Electron. ENg., Yonsei Univ., Seoul

Volume

5

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

1622

Lastpage

1625

Abstract

The authors present an analysis of the effect of timing offset on channel estimation for comb-type pilot-aided orthogonal frequency division multiplexing (OFDM) systems. Residual timing offset does not negatively affect the channel estimation of the pilot subcarrier, but does corrupt the channel information obtained via interpolation. This paper provides the mean square error (MSE) channel estimation performance when a linear interpolation technique is used in a comb-type pilot-aided OFDM system. Analysis shows that the performance degradation of the channel estimator due to imperfect frame synchronization is dependent on the frequency correlation of the channels and the amount of timing offset

Keywords

OFDM modulation; channel estimation; interpolation; mean square error methods; OFDM systems; comb-type pilot-aided orthogonal frequency division multiplexing systems; frame synchronization; frequency correlation; linear interpolation technique; mean square error channel estimation; residual timing offset; Channel estimation; Degradation; Frequency estimation; Frequency synchronization; Information technology; Interpolation; Mean square error methods; OFDM; Performance analysis; Timing;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2006.1673071

Filename

1673071