Comparison of practical feedback algorithms for multiuser MIMO
Name
Shanechi-2009-Comparison of practical feedback algorithms for multiuser MIMO.pdf
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161.67 KB
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Author(s)
Modir Shanechi, Maryam
Porat, Ron
Erez, Uri
Date Issued
June 2009
Journal
IEEE 69th Vehicular Technology Conference, 2009. VTC Spring 2009.
Publisher
Institute of Electrical and Electronics Engineers
Citation
Shanechi, M.M.; Porat, R.; Erez, U.; , "Comparison of Practical Feedback Algorithms for Multiuser MIMO," Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th , vol., no., pp.1-5, 26-29 April 2009 © Copyright 2011 IEEE
Version
Final published version
Abstract
We consider the problem of channel state information (CSI) transmission on a fast feedback link for a multiuser MIMO system.We examine the relative merits of channel feedback schemes based on Shannon's source-channel separation theorem and non-separation based schemes and show that the latter are preferable in this application. For the non-separation based schemes, we first consider a simple analog transmission and then develop a hybrid digital-analog transmission scheme which quantizes the CSI using a few bits and sends these bits and also the quantization error using analog transmission. We show that the hybrid scheme achieves a higher throughput compared to both analog and digital transmissions and has a much lower computational complexity compared to a digital scheme.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/VETECS.2009.5073453
