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Joint channel estimation and equalisation of fast time-varying frequency-selective channels

Gligorevic, Snjezana (2007) Joint channel estimation and equalisation of fast time-varying frequency-selective channels. European Transactions on Telecommunications, Vol. 19 (1), pp. 1-13. John Wiley & Sons, Ltd. doi: 10.1002/ett.1216. ISSN Online: 1541-8251; ISSN Print: 1124-318X.

Full text not available from this repository.

Official URL: http://www3.interscience.wiley.com/cgi-bin/abstract/114215613

Abstract

This paper addresses joint channel and data estimation for transmission over frequency-selective and time-varying channels based on a Doppler-variant channel impulse response (CIR). A discrete spreading function (DSF), which corresponds to the Doppler Fourier series of the time-varying channel taps, is introduced. The spectral leakage associated with the Fourier series representation is reduced by oversampling in Doppler-direction. This approach, however, requires joint channel estimation and equalisation (JCE). Therefore, a recursive least squares (RLS) algorithm for the DSF estimation is combined with the data detection in a reduced state diagram. Furthermore, an enhanced metric, previously introduced in De Broeck et al. (Proceedings of Second International Workshop on Multi-Carrier Spread-Spectrum, [1999]; published by Kluwer Academic Publishers: Dordrecht, 2000) for time-invariant channels, is applied here for path selection. The performance of this metric is investigated here for time-varying and frequency-selective (TV-FS) channels. The performance of the proposed approach is compared with the JCE algorithm which uses RLS estimation of a CIR by simulations.

Item URL in elib:https://elib.dlr.de/48068/
Document Type:Article
Additional Information:Published Online in April 2007
Title:Joint channel estimation and equalisation of fast time-varying frequency-selective channels
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gligorevic, SnjezanaUNSPECIFIEDUNSPECIFIED
Date:2007
Journal or Publication Title:European Transactions on Telecommunications
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:Vol. 19
DOI:10.1002/ett.1216
Page Range:pp. 1-13
Publisher:John Wiley & Sons, Ltd
Series Name:Jan/Feb 2008
ISSN:Online: 1541-8251; ISSN Print: 1124-318X
Status:Published
Keywords:time-varying channel, channel estimation, equalization
HGF - Research field:UNSPECIFIED
HGF - Program:UNSPECIFIED
HGF - Program Themes:UNSPECIFIED
DLR - Research area:UNSPECIFIED
DLR - Program:UNSPECIFIED
DLR - Research theme (Project):L - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Gligorevic, Dr.-Ing. Snjezana
Deposited On:23 Jan 2008
Last Modified:03 Dec 2012 09:50

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