Optimizing random unitary beamforming for energy efficiency in MIMO broadcast channels

Jae Hong Kwon, Young-Chai Ko, Hong Chuan Yang

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

Abstract

Random unitary beamforming (RUB) achieves multiuser diversity gain over multiple-input multiple-output (MIMO) broadcast channels with channel state information (CSI). In this paper, we optimize RUB schemes in terms of energy efficiency (EE) which is defined as "capacity/power consumption". The key idea of our approach is to derive EE-optimal number of antennas and transmit power based on mathematical analysis. Using simple approximation expression, we derive efficient approach to find global optimum. Simulation results demonstrate that analytical results are accurate.

Original languageEnglish
Title of host publication2016 IEEE 84th Vehicular Technology Conference, VTC Fall 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509017010
DOIs
Publication statusPublished - 2017 Mar 17
Event84th IEEE Vehicular Technology Conference, VTC Fall 2016 - Montreal, Canada
Duration: 2016 Sep 182016 Sep 21

Other

Other84th IEEE Vehicular Technology Conference, VTC Fall 2016
CountryCanada
CityMontreal
Period16/9/1816/9/21

Keywords

  • Circuit power consumption
  • Energy efficiency
  • Multiplexing gain
  • Power allocation
  • Random unitary beamforming

ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Kwon, J. H., Ko, Y-C., & Yang, H. C. (2017). Optimizing random unitary beamforming for energy efficiency in MIMO broadcast channels. In 2016 IEEE 84th Vehicular Technology Conference, VTC Fall 2016 - Proceedings [7881140] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCFall.2016.7881140