Optimal Downlink BeamformingUsing Semidefinite Optimization
1999 (English)In: Proc. of 37th Annual Allerton Conference on Communication,Control, and Computing, 1999, 987-996 p.Conference paper (Other academic)
When using antenna arrays at the base station of a cellular system, one critical aspectis the transmission strategy. An optimal choice of beamformers for simultaneous transmissionto several co-channel users must be solved jointly for all users and base stations in anarea. We formulate an optimal transmit strategy and show how the solution can be calculatedefficiently using interior point methods for semidefinite optimization. The algorithmminimizes the total transmitted power under certain constraints to guarantee a specificquality of service. The method provides large flexibility in the choice of constraints andcan be extended to be robust to channel perturbations.
Place, publisher, year, edition, pages
1999. 987-996 p.
IdentifiersURN: urn:nbn:se:kth:diva-143884OAI: oai:DiVA.org:kth-143884DiVA: diva2:709384
37th Annual Allerton Conference on Communication, Control, and Computing
QC 201405222014-04-012014-04-012014-05-22Bibliographically approved