Joint multiuser downlink beamforming and admission control: A semidefinite relaxation approach
dc.creator | Matskani, E. | en |
dc.creator | Sidiropoulos, N. D. | en |
dc.creator | Luo, Z. Q. | en |
dc.creator | Tassiulas, L. | en |
dc.date.accessioned | 2015-11-23T10:39:04Z | |
dc.date.available | 2015-11-23T10:39:04Z | |
dc.date.issued | 2007 | |
dc.identifier | 10.1109/ICASSP.2007.366747 | |
dc.identifier.isbn | 1424407281 | |
dc.identifier.issn | 15206149 | |
dc.identifier.uri | http://hdl.handle.net/11615/30781 | |
dc.description.abstract | Multiuser downlink beamforming under quality of service (QoS) constraints has attracted considerable interest in recent years, because it is particularly appealing from a network operator's perspective (e.g., UMTS, 802.16e). When there are many co-channel users and/or the service constraints are stringent, the problem becomes infeasible and some form of admission control is necessary. We advocate a cross-layer approach to joint multiuser transmit beamforming and admission control, aiming to maximize the number of users that can be served at their desired QoS. The core problem is NP-hard, yet amenable to convex approximation tools. We propose a computationally efficient semidefinite relaxation algorithm which works remarkably well in a range of experiments, using both simulated and measured channel data. © 2007 IEEE. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-34547529408&partnerID=40&md5=0e62d7f54647264ed5fec4aed4f83ee4 | |
dc.subject | Admission control | en |
dc.subject | Convex approximation | en |
dc.subject | Downlink beamforming | en |
dc.subject | Scheduling | en |
dc.subject | Semidefinite relaxation | en |
dc.subject | Access control | en |
dc.subject | Algorithms | en |
dc.subject | Approximation theory | en |
dc.subject | Computational complexity | en |
dc.subject | Constraint theory | en |
dc.subject | Optimization | en |
dc.subject | Quality of service | en |
dc.subject | Service constraints | en |
dc.subject | Beamforming | en |
dc.title | Joint multiuser downlink beamforming and admission control: A semidefinite relaxation approach | en |
dc.type | conferenceItem | en |
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