SINR constrained beamforming for a MIMO multi-user downlink system

Qingjiang Shi, Meisam Razaviyayn, Mingyi Hong, Zhi Quan Luo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Consider the multi-user downlink beamforming problem where the base station transmits data to its intended mobile stations. Both the base stations and the users are equipped with multiple antennas. The objective of beamforming is to minimize the power consumption in the network while satisfying the users' SINR constraints. Based on the analysis of the KKT conditions of the problem, we propose a low complexity iterative algorithm that computes a local minimum of the optimization problem. The numerical experiments show that the proposed algorithm is efficient in achieving low power consumption while satisfying the QoS constraints. Our numerical experiments indicate that, unlike many existing algorithms, the proposed method can be initialized from infeasible points. Moreover, our theoretical analysis shows that the algorithm monotonically converges to a KKT point of the problem.

Original languageEnglish (US)
Title of host publicationConference Record of the 46th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012
Pages1991-1995
Number of pages5
DOIs
StatePublished - Dec 1 2012
Event46th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012 - Pacific Grove, CA, United States
Duration: Nov 4 2012Nov 7 2012

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other46th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012
CountryUnited States
CityPacific Grove, CA
Period11/4/1211/7/12

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