A fast approximation algorithm for single-group multicast beamforming with large antenna arrays

Aritra Konar, Nicholas D. Sidiropoulos

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

4 Scopus citations

Abstract

Multicast beamforming utilizes multiple transmit antennas and subscriber channel state information at the transmitter to direct power towards a group of subscribers while limiting interference caused to others. Unfortunately, the natural max-min-fair multicast beamforming formulation is a nonconvex Quadratically Constrained Quadratic Programming (QCQP) problem. This paper proposes a high performance, low complexity Successive Convex Approximation (SCA) algorithm for max-min-fair multicast beamforming with per antenna power constraints in a massive MIMO setting. The proposed approach is based on iterative approximation of the non-convex problem by a sequence of non-smooth, convex optimization problems, and using an inexact version of the Alternating Direction Method of Multipliers for efficiently computing solutions of each SCA subproblem via proximal operator evaluations. Simulations reveal that the algorithm achieves a very favorable performance-complexity tradeoff relative to the existing state-of-the-art.

Original languageEnglish (US)
Title of host publicationSPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509017492
DOIs
StatePublished - Aug 9 2016
Event17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 - Edinburgh, United Kingdom
Duration: Jul 3 2016Jul 6 2016

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume2016-August

Other

Other17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
CountryUnited Kingdom
CityEdinburgh
Period7/3/167/6/16

Fingerprint Dive into the research topics of 'A fast approximation algorithm for single-group multicast beamforming with large antenna arrays'. Together they form a unique fingerprint.

Cite this