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Impact of Open-Loop Power Controlled Feedback on Multiuser Capacity in Rayleigh Fading Channels
KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Communication Systems, CoS.
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0003-4986-6123
2009 (English)In: IEEE Communications Letters, ISSN 1089-7798, Vol. 13, no 12, 932-934 p.Article in journal (Refereed) Published
Abstract [en]

This letter investigates the impact of open-loop power control (OLPC) employed in uplink (UL) feedback channel on the multiuser downlink (DL) capacity. OLPC is used to reduce the capacity loss caused by the feedback outage. Assuming flat Rayleigh channels correlated between DL and UL, we provide probability distributions on the DL SNR that are successfully fed back through UL managed by OLPC. Numerical results are used to verify the accuracy of the analysis and to show the impact of relevant parameters of OLPC on the capacity as a function of DL-UL correlation.

Place, publisher, year, edition, pages
2009. Vol. 13, no 12, 932-934 p.
Keyword [en]
Multiuser capacity, OLPC, feedback channel, correlated Rayleigh fading, diversity
URN: urn:nbn:se:kth:diva-19046DOI: 10.1109/lcomm.2009.12.091286ISI: 000272755700018ScopusID: 2-s2.0-73449148757OAI: diva2:337093
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-01-14Bibliographically approved

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