Heuristic antenna selection and precoding for a massive MIMO system

Waqas Bin Abbas, Salman Khalid, Qasim Zeeshan Ahmed, Farhan Khalid, Temitope Alade, Pradorn Sureephong

Research output: Contribution to journalArticlepeer-review

Abstract

Sixth Generation (6G) transceivers are envisioned to feature massively large antenna arrays compared to its predecessor. This will result in even higher spectral efficiency (SE) and multiplexing gains. However, immense concerns remain about the energy efficiency (EE) of such transceivers. This work focuses on partially connected hybrid architectures, with the primary aim of enhancing the EE of the system. To achieve this objective, the study proposes a combined approach of joint antenna selection and precoding, which holds the potential to further optimize the system’s EE while maintaining a satisfactory SE performance levels. The proposed approach incorporates antenna selection based on a meta-heuristic cyclic binary particle swarm optimization algorithm along with successive interference cancellation-based precoding. The results indicate that the proposed solution, in terms of SE and EE, performs very close to the optimal exhaustive search algorithm. This study also investigates the trade-off between SE and EE in a low and high signal-to-noise ratio (SNR) regimes. The robustness of the proposed scheme is also demonstrated when the channel state information is imperfect. In conclusion, this work presents a lower complexity approach to enhance EE in 6G transceivers while maintaining SE performance and along with a reduction in power consumption.
Original languageEnglish
Pages (from-to)83-96
Number of pages14
Journal IEEE Open Journal of the Communications Society
Volume5
Early online date12 Dec 2023
DOIs
Publication statusPublished - Jan 2024

Keywords

  • Sixth Generation (6G)
  • Massive MIMO
  • Antenna Selection
  • Hybrid Architectures
  • Energy Efficiency
  • Power Consumption
  • Spectral Efficiency
  • Beamforming
  • Transmitting antennas
  • Radio frequency
  • Precoding
  • Receiving antennas
  • Computer architecture
  • Antennas
  • Antenna arrays

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