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An adaptive channel estimation algorithm using time-frequency polynomial model for OFDM with fading multipath channels

Authors:

K. J. R. LiuAuthors Info & Claims

EURASIP Journal on Advances in Signal Processing, Volume 2002, Issue 1

Pages 818 - 830

Published: 01 January 2002 Publication History

Abstract

Orthogonal frequency division multiplexing (OFDM) is an effective technique for the future 3G communications because of its great immunity to impulse noise and intersymbol interference. The channel estimation is a crucial aspect in the design of OFDM systems. In this work, we propose a channel estimation algorithm based on a time-frequency polynomial model of the fading multipath channels. The algorithm exploits the correlation of the channel responses in both time and frequency domains and hence reduce more noise than the methods using only time or frequency polynomial model. The estimator is also more robust compared to the existing methods based on Fourier transform. The simulation shows that it has more than 5 dB improvement in terms of mean-squared estimation error under some practical channel conditions. The algorithm needs little prior knowledge about the delay and fading properties of the channel. The algorithm can be implemented recursively and can adjust itself to follow the variation of the channel statistics.

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Cited By

Ma XWang TLi LRaza WWu Z(2020)Doppler Compensation of Orthogonal Frequency Division Multiplexing for Ocean Intelligent Multimodal Information TechnologyMobile Networks and Applications10.1007/s11036-020-01609-025:6(2351-2358)Online publication date: 6-Aug-2020
https://dl.acm.org/doi/10.1007/s11036-020-01609-0
Jan Y(2019)Fast Time-Varying Multipath Channel Estimation and Signal Detection for of OFDM Systems with Interference CompensationWireless Personal Communications: An International Journal10.1007/s11277-017-4990-998:3(2569-2590)Online publication date: 3-Jan-2019
https://dl.acm.org/doi/10.1007/s11277-017-4990-9
Hijazi HRos L(2009)Analytical analysis of Bayesian Cramér-Rao bound for dynamical rayleigh channel complex gains estimation in OFDM systemIEEE Transactions on Signal Processing10.1109/TSP.2009.201426457:5(1889-1900)Online publication date: 1-May-2009
https://dl.acm.org/doi/10.1109/TSP.2009.2014264

Index Terms

An adaptive channel estimation algorithm using time-frequency polynomial model for OFDM with fading multipath channels

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cover image EURASIP Journal on Advances in Signal Processing

EURASIP Journal on Advances in Signal Processing Volume 2002, Issue 1

January 2002

1398 pages

ISSN:1110-8657

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Hindawi Limited

London, United Kingdom

Publication History

Published: 01 January 2002

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Cited By

Ma XWang TLi LRaza WWu Z(2020)Doppler Compensation of Orthogonal Frequency Division Multiplexing for Ocean Intelligent Multimodal Information TechnologyMobile Networks and Applications10.1007/s11036-020-01609-025:6(2351-2358)Online publication date: 6-Aug-2020
https://dl.acm.org/doi/10.1007/s11036-020-01609-0
Jan Y(2019)Fast Time-Varying Multipath Channel Estimation and Signal Detection for of OFDM Systems with Interference CompensationWireless Personal Communications: An International Journal10.1007/s11277-017-4990-998:3(2569-2590)Online publication date: 3-Jan-2019
https://dl.acm.org/doi/10.1007/s11277-017-4990-9
Hijazi HRos L(2009)Analytical analysis of Bayesian Cramér-Rao bound for dynamical rayleigh channel complex gains estimation in OFDM systemIEEE Transactions on Signal Processing10.1109/TSP.2009.201426457:5(1889-1900)Online publication date: 1-May-2009
https://dl.acm.org/doi/10.1109/TSP.2009.2014264

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