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On Cooperative Source Transmission with Partial Rate and Power Control
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-7926-5081
USC.
2008 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 26, no 8, 1408-1418 p.Article in journal (Refereed) Published
Abstract [en]

The problem of transmitting a Gaussian source over a half-duplex fading relay channel with limited channel state feedback is studied. It is shown that under a short-term power constraint, combining a simple feedback scheme with separate source and channel coding outperforms the best known no-feedback strategies even with only a few bits of feedback information. Partial power control is shown to be instrumental in achieving a very fast decaying average distortion, especially in the regime of high bandwidth ratios. Performance limitation due to the lack of full channel state information at the destination is also investigated, where the degradation in terms of the distortion exponent is shown to be significant. However, even in such restrictive scenarios, using partial feedback still yields distortion exponents superior to any no-feedback schemes.

Place, publisher, year, edition, pages
IEEE Communications Society, 2008. Vol. 26, no 8, 1408-1418 p.
Keyword [en]
Cooperative communications, Diversity-multiplexing tradeoff, Limited feedback, Power control, Source-channel coding
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-17883DOI: 10.1109/jsac.2008.081007ISI: 000259972900007Scopus ID: 2-s2.0-54249164524OAI: oai:DiVA.org:kth-17883DiVA: diva2:335928
Note
QC 20100525 QC 20111213Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Skoglund, Mikael

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