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Transmit outage precoding with imperfect channel state information under an instantaneous power constraint
2008 (English)In: 2008 IEEE 9TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, VOLS 1 AND 2, NEW YORK: IEEE , 2008, 66-70 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we consider a multiple antenna broadcast scenario with multiple non-cooperative users under the assumption of imperfect channel state information. Under an instantaneous transmit power constraint, vector perturbation precoding requires that the users be continuously informed about the adaptive power scaling factor used at the transmit side. To overcome this limitation, we propose a new precoding scheme that uses a fixed power scaling and avoids transmitting when the available power is not sufficient to perform channel equalization at the transmit side, an event referred to as outage. We present a performance analysis and optimization of this scheme and provide numerical comparisons with classical vector perturbation.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2008. 66-70 p.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-34902DOI: 10.1109/SPAWC.2008.4641571ISI: 000263224100014ISBN: 978-1-4244-2045-2 (print)OAI: oai:DiVA.org:kth-34902DiVA: diva2:427975
Conference
9th IEEE Workshop on Signal Processing Advances in Wireless Communications Recife, BRAZIL, JUL 06-09, 2008
Note
QC 20110629Available from: 2011-06-29 Created: 2011-06-17 Last updated: 2011-07-05Bibliographically approved

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Jaldén, Joakim

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  • apa
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