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

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 f...

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Bibliographic Details
Published in:IEEE communications letters 2010-09, Vol.14 (9), p.809-811
Main Authors: SEO, Jeongwook, JANG, Seunghun, YANG, Janghoon, JEON, Wongi, DONG KU KIM
Format: Article
Language:English
Subjects:
Applied sciences
Channel estimation
Channels
Computational complexity
Detection, estimation, filtering, equalization, prediction
DFT-based interpolation
Discrete Fourier transforms
Error analysis
Estimators
Exact sciences and technology
Fourier transforms
Frequency domain analysis
Frequency estimation
Information, signal and communications theory
Interpolation
Leakage
Mean square error methods
Mean square values
Multiplexing
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
Performance analysis
pilot-aided channel estimation
Signal and communications theory
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Summary: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.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2010.072610.100186