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Exploiting long-term statistics in spatially correlated multi-user MIMO systems with quantized channel norm feedback
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
2008 (English)In: 2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, IEEE , 2008, 3117-3120 p.Conference paper, Published paper (Refereed)
Abstract [en]

In wireless multiple antenna and multi-user systems, the spatial dimensions may be exploited to increase the performance by means of antenna gain, spatial diversity, and multi-user diversity. A limiting factor in such systems is the channel information required by the transmitter to control the intra-cell interference. Herein, the properties of spatially correlated channels with long-term statistical information at the transmitter and fixed-rate feedback of the quantized Euclidean channel norm are analyzed using a spectral subspace decomposition framework. A spatial division multiple access scheme is proposed with interference suppression at the receiver and joint scheduling and zero-forcing beamforming at the transmitter. Closed-form expressions for first and second order moments of the feedback conditional channel statistics are derived. It is shown that only a few bits of feedback are required to achieve reliable rate estimation and weighted sum-rate maximization.

Place, publisher, year, edition, pages
IEEE , 2008. 3117-3120 p.
Series
IEEE International Conference on Acoustics, Speech and Signal Processing, ISSN 1520-6149
Keyword [en]
array signal processing, feedback, MIMO systems, mobile communication, spatial division multiple access
National Category
Telecommunications Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-34919DOI: 10.1109/ICASSP.2008.4518310ISI: 000257456702102Scopus ID: 2-s2.0-51449108899ISBN: 978-1-4244-1483-3 (print)OAI: oai:DiVA.org:kth-34919DiVA: diva2:428767
Conference
33rd IEEE International Conference on Acoustics, Speech and Signal Processing Las Vegas, NV, MAR 30-APR 04, 2008
Note
© 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. QC 20110701Available from: 2011-10-26 Created: 2011-06-17 Last updated: 2012-01-23Bibliographically approved

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