First-Order Methods for Energy-Efficient Power Control in Cell-Free Massive MIMO: Invited paper

Le Nam Tran, Hien Quoc Ngo

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

1 Citation (Scopus)

Abstract

This paper considers a cell-free massive MIMO system with multiple-antenna access points and single-antenna users. The APs use conjugate beamforming to beamform the data to all users in the network. Total energy efficiency maximization is investigated. This optimization problem is nonconvex and thus difficult to solve. Existing solutions are based on second-order optimization methods in connection with convex approximations. These methods have been shown to perform very well but their complexity does not scale favorably with the network size. To tackle this issue, in this paper we propose to use a first-order method for nonconvex programming to our energy efficiency problem. Compared to the second-order methods, the proposed method achieves the same performance, while its run time is much faster. Thus, it is considered as a feasible solution for resource allocation in cell-free massive MIMO systems.

Original languageEnglish
Title of host publication2019 53rd Asilomar Conference on Signals, Systems, and Computers: Proceedings
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages848-852
Number of pages5
ISBN (Electronic)9781728143002
DOIs
Publication statusPublished - 30 Mar 2020
Event53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019 - Pacific Grove, United States
Duration: 03 Nov 201906 Nov 2019

Publication series

NameAsilomar Conference on Signals, Systems, and Computers: Proceedings
Volume2019-November
ISSN (Print)1058-6393

Conference

Conference53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019
CountryUnited States
CityPacific Grove
Period03/11/201906/11/2019

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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