Improved Design and Implementation of Variational Bayesian Iterative Receivers
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Date
2012-09
ORCID
Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
It was recently shown that detection performance can be significantly improved if the statistics of channel estimation errors are available and properly used at the receiver. Although deriving the statistics of channel estimation errors is rather straightforward for pilot-only channel estimation methods, it is not the case for semi-blind receivers such as variational Bayesian (VB) receivers. We have shown in a recent contribution that by a modified formulation of the VB formalism, one can reduce the impact of channel uncertainty on the decoder performance. In this paper, we propose different practical VB receiver implementation techniques that lead to further performance improvement. The adequacy of the proposed receiver design compared to classically-used VB receivers is demonstrated by simulations for orthogonal frequency-division multiplexing (OFDM) systems.
Description
Citation
Radioengineering. 2012, vol. 21, č. 3, s. 838-844. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_03_0838_0844.pdf
http://www.radioeng.cz/fulltexts/2012/12_03_0838_0844.pdf
Document type
Peer-reviewed
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Published version
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en