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Distributed Multicell Beamforming With Limited Intercell Coordination
School of Information Science and Engineering, Southeast University, Nanjing.
Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg.
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Signal Processing.ORCID iD: 0000-0002-3599-5584
(Department of Electrical and Electronic Engineering, University College London, London)
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2011 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 59, no 2, 728-738 p.Article in journal (Refereed) Published
Abstract [en]

This paper studies distributed optimization schemes for multicell joint beamforming and power allocation in time-division-duplex (TDD) multicell downlink systems where only limited-capacity intercell information exchange is permitted. With an aim to maximize the worst-user signal-to-interference-and-noise ratio (SINR), we devise a hierarchical iterative algorithm to optimize downlink beamforming and intercell power allocation jointly in a distributed manner. The proposed scheme is proved to converge to the global optimum. For fast convergence and to reduce the burden of intercell parameter exchange, we further propose to exploit previous iterations adaptively. Results illustrate that the proposed scheme can achieve near-optimal performance even with a few iterations, hence providing a good tradeoff between performance and backhaul consumption. The performance under quantized parameter exchange is also examined.

Place, publisher, year, edition, pages
2011. Vol. 59, no 2, 728-738 p.
Keyword [en]
Limited capacity backhauling, multicell beamforming, uplink-downlink duality
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URN: urn:nbn:se:kth:diva-31342DOI: 10.1109/TSP.2010.2089621ISI: 000286111100021ScopusID: 2-s2.0-78651351019OAI: diva2:404487
EU, FP7, Seventh Framework ProgrammeICT - The Next Generation
QC 20110317Available from: 2011-03-17 Created: 2011-03-14 Last updated: 2011-11-29Bibliographically approved

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