Analog-digital beamforming for tunable-load MIMO by mutual coupling exploitation

Ang Li, Christos Masouros, Mathini Sellathurai

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

1 Citation (Scopus)

Abstract

In this paper, we propose a joint analog-digital (AD) beamforming scheme that exploits the mutual coupling effect to further improve the performance of multi-user multiple-input single-output (MU-MISO) systems. We firstly propose a joint AD scheme by iteratively optimizing the beamforming vectors in the digital domain and the load impedances of each antenna element in the analog domain. We further propose a low-complexity decoupled AD scheme, where the mutual coupling exploitation can be efficiently applied upon existing beamformers. The practical implementation of the proposed schemes is also discussed. Numerical results show that the proposed schemes can achieve an improved performance compared to the case with fixed mutual coupling.

Original languageEnglish
Title of host publication18th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
PublisherIEEE
ISBN (Electronic)9781509030088
DOIs
Publication statusPublished - 21 Dec 2017
Event18th IEEE International Workshop on Signal Processing Advances in Wireless Communications 2017 - Sapporo, Japan
Duration: 3 Jul 20176 Jul 2017

Publication series

NameInternational Workshop on Signal Processing Advances in Wireless Communications
PublisherIEEE
ISSN (Print)1948-3252

Conference

Conference18th IEEE International Workshop on Signal Processing Advances in Wireless Communications 2017
Abbreviated titleSPAWC 2017
CountryJapan
CitySapporo
Period3/07/176/07/17

Keywords

  • Analog-digital beamforming
  • Joint optimization
  • MU-MISO
  • Mutual coupling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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  • Cite this

    Li, A., Masouros, C., & Sellathurai, M. (2017). Analog-digital beamforming for tunable-load MIMO by mutual coupling exploitation. In 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) [8227792] (International Workshop on Signal Processing Advances in Wireless Communications). IEEE. https://doi.org/10.1109/SPAWC.2017.8227792