Joint downlink power allocation, beamforming weights and base assignment

Lev Smolyar, Itsik Bergel, Hagit Messer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The paper considers the transmitter optimization problem for a multi-base, multi-user downlink channel with multiple antennas at each base station. We consider joint optimization of three parameters: transmitted powers, beamforming weights and base stations (BS) assignment. We solve the downlink optimization problem by transforming it to a dual uplink problem. The uplink optimization problem is simpler to solve, and it is used to estimate the beamforming vectors and user-to-base assignments of the downlink problem. The proposed algorithm not only minimizes the transmitted power, but also is able to achieve feasible solutions for SIR requirements that are not feasible using traditional methods. In addition, in contrast to previous analysis, we consider a system that utilizes soft handoff mechanism. We show that soft handoff, while very useful for transmission continuity, cannot reduce the sum of the base stations powers.

Original languageEnglish
Title of host publicationSPAWC 2007 - 8th IEEE Workshop on Signal Advances in Wireless Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)1424409551, 9781424409556
DOIs
StatePublished - 2007
Event8th IEEE Signal Processing Advances in Wireless Communications, SPAWC 2007 - Helsinki, Finland
Duration: 17 Jun 200720 Jun 2007

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Conference

Conference8th IEEE Signal Processing Advances in Wireless Communications, SPAWC 2007
Country/TerritoryFinland
CityHelsinki
Period17/06/0720/06/07

Keywords

  • Network optimization
  • Power control

Fingerprint

Dive into the research topics of 'Joint downlink power allocation, beamforming weights and base assignment'. Together they form a unique fingerprint.

Cite this