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Application of Bayesian Hierarchical Prior Modeling to Sparse Channel Estimation

Pedersen, N.L. and Manchon, C.N. and Shutin, Dmitriy and Fleury, B. H. (2012) Application of Bayesian Hierarchical Prior Modeling to Sparse Channel Estimation. In: 2012 IEEE International Conference on Communications (ICC). IEEE International Conference on Communications, 12.-15. Jun. 2912, Ottawa, Canada. doi: 10.1109/ICC.2012.6363847. ISBN 978-1-4577-2052-9. ISSN 1550-3607.

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Existing methods for sparse channel estimation typically provide an estimate computed as the solution maximizing an objective function defined as the sum of the log-likelihood function and a penalization term proportional to the l1-norm of the parameter of interest. However, other penalization terms have proven to have strong sparsity-inducing properties. In this work, we design pilot-assisted channel estimators for OFDM wireless receivers within the framework of sparse Bayesian learning by defining hierarchical Bayesian prior models that lead to sparsity-inducing penalization terms. The estimators result as an application of the variational message-passing algorithm on the factor graph representing the signal model extended with the hierarchical prior models. Numerical results demonstrate the superior performance of our channel estimators as compared to traditional and state-of-the-art sparse methods.

Item URL in elib:https://elib.dlr.de/92571/
Document Type:Conference or Workshop Item (Speech)
Title:Application of Bayesian Hierarchical Prior Modeling to Sparse Channel Estimation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shutin, DmitriyDmitriy.Shutin (at) dlr.deUNSPECIFIED
Fleury, B. H.bfl (at) es.aau.dkUNSPECIFIED
Journal or Publication Title:2012 IEEE International Conference on Communications (ICC)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/ICC.2012.6363847
Keywords:Sparse channel estiamation, OFDM
Event Title:IEEE International Conference on Communications
Event Location:Ottawa, Canada
Event Type:international Conference
Event Dates:12.-15. Jun. 2912
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Communication, Navigation and Surveillance (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Shutin, Dmitriy
Deposited On:26 Nov 2014 10:47
Last Modified:09 Feb 2018 09:04

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