Optimal downlink beamforming with additional constraints
2003 (English)In: CONFERENCE RECORD OF THE THIRTY-SEVENTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, 2003, 1811-1814 p.Conference paper (Refereed)
This work addresses the problem of joint downlink beamforming and power control with general Quality of Service (QoS) constraints. Previous work on downlink beamforming does not provide a framework to handle the additional constraints in a straightforward fashion. Herein, it is shown that the QoS requirements can be formulated as quadratic constraints to a convex optimization problem. An efficient algorithm for solving the problem, based on semidefinite optimization is presented. To demonstrate the performance of the proposed approach, we present an example using quadratic constraints to greatly decrease the probability of a low instantaneous Signal to Interference and Noise Ratio (SINR) for a receiver equipped with a RAKE combiner.
Place, publisher, year, edition, pages
2003. 1811-1814 p.
, Conference record of the Asilomar conference on signals, systems and computers, ISSN 1058-6393
QoS, RAKE combiner, RAKE receiver, convex optimization problem, joint downlink beamforming, power control, quadratic constraints, quality of service
IdentifiersURN: urn:nbn:se:kth:diva-34982DOI: 10.1109/ACSSC.2003.1292295ISI: 000189498700340ISBN: 0-7803-8104-1OAI: oai:DiVA.org:kth-34982DiVA: diva2:426806
37th Asilomar Conference on Signals, Systems and Computers Pacific Grove, CA, NOV 09-12, 2003
QC 201106272011-06-272011-06-172012-02-06Bibliographically approved