Analysis of Pilot-Aided Channel Estimation with Optimal Leakage Suppression for OFDM Systems

Author

Seo, Jeongwook ; Jang, Seunghun ; Yang, Janghoon ; Jeon, Wongi ; Kim, Dong Ku

Author_Institution

Korea Electron. Technol. Inst., Seoul, South Korea

Volume

14

Issue

9

fYear

2010

fDate

9/1/2010 12:00:00 AM

Firstpage

809

Lastpage

811

Abstract

This letter analyzes the effect of the leakage on the mean square error (MSE) performance of the pilot-aided channel estimator using discrete Fourier transform (DFT)-based interpolation in orthogonal frequency division multiplexing (OFDM) systems with virtual carriers. The optimal linear estimator for leakage suppression is derived to minimize the MSE. Numerical results show that the pilot-aided channel estimator with optimal leakage suppression improves the MSE performance significantly over the conventional one.

Keywords

OFDM modulation; channel estimation; discrete Fourier transforms; interpolation; mean square error methods; DFT-based interpolation; MSE; OFDM system; discrete Fourier transform; mean square error; optimal leakage suppression; optimal linear estimator; orthogonal frequency division multiplexing; pilot-aided channel estimation; Channel estimation; Computational complexity; Covariance matrix; Delay; Discrete Fourier transforms; Frequency domain analysis; Frequency estimation; Helium; Interpolation; Mean square error methods; OFDM; Performance analysis; Signal to noise ratio; DFT-based interpolation; OFDM; leakage; pilot-aided channel estimation;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.072610.100186

Filename

5535254