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Time-varying channel estimation for OFDM with extended observation window

Authors:

Dan Shan,

Paul Richardson,

Weidong Xiang,

Athanasios V. VasilakosAuthors Info & Claims

VANET '12: Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications

Pages 93 - 98

https://doi.org/10.1145/2307888.2307904

Published: 25 June 2012 Publication History

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Abstract

Orthogonal Frequency-Division Multiplexing (OFDM) systems operating in high mobility environments experience time-varying channel, which leads to serious inter-carrier-interferences. Basis Expansion Model (BEM) is a widely used technique to estimate the time-varying channel, but can only capture the time-varying characteristics within each single OFDM block one by one in traditional algorithms. A method to extend the observation window of BEM based algorithms to the range of multiple OFDM blocks is established and adapted to pilot-assisted OFDM systems, where pilot signals in multiple OFDM blocks are converted into time-domain and connected together. As a result, the time-varying channel can be estimated more accurately, with comparable complexity as those of traditional algorithms.

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Cited By

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Shan DRichardson PXiang WZeng KQian HAddepalli S(2014)Time-varying channel estimation through optimal piece-wise time-invariant approximation for high-speed train wireless communicationsVehicular Communications10.1016/j.vehcom.2014.04.0031:2(67-77)Online publication date: 1-Apr-2014
https://dl.acm.org/doi/10.1016/j.vehcom.2014.04.003

Index Terms

Time-varying channel estimation for OFDM with extended observation window
1. Networks
  1. Network types
    1. Mobile networks
    2. Wireless access networks

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VANET '12: Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications

June 2012

158 pages

ISBN:9781450313179

DOI:10.1145/2307888

General Chairs:
John B. Kenney
Toyota InfoTechnology Center, USA
,
Javier Gozalvez
University Miguel Hernández de Elche, Spain
,
Program Chairs:
Fan Bai
General Motors, USA
,
Robin Kravets
University of Illinois, Urbana-Champaign, USA

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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SIGOPS: ACM Special Interest Group on Operating Systems

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Association for Computing Machinery

New York, NY, United States

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Published: 25 June 2012

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MobiSys'12

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SIGMOBILE

MobiSys'12: The 10th International Conference on Mobile Systems, Applications, and Services

June 25, 2012

Lake District, Low Wood Bay, UK

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Overall Acceptance Rate 26 of 64 submissions, 41%

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Shan DRichardson PXiang WZeng KQian HAddepalli S(2014)Time-varying channel estimation through optimal piece-wise time-invariant approximation for high-speed train wireless communicationsVehicular Communications10.1016/j.vehcom.2014.04.0031:2(67-77)Online publication date: 1-Apr-2014
https://dl.acm.org/doi/10.1016/j.vehcom.2014.04.003

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A Novel Technique for Channel Estimation and Equalization for High Mobility OFDM Systems

Pilot-Assisted Time-Varying Channel Estimation for OFDM Systems

Equalization for OFDM over doubly selective channels

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