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Related Experiment Video

Updated: May 23, 2026

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

A Link Quality Estimation-based Beamforming Training Protocol for IEEE 802.11ay MU-MIMO Communications.

Mun-Suk Kim1, Tanguy Ropitault1, SuKyoung Lee2

  • 1National Institute of Standards and Technology, Gaithersburg, MD 20899 USA.

IEEE Transactions on Communications. IEEE Communications Society
|May 22, 2026
PubMed
Summary

This study introduces a new transmit antenna configuration scheme to reduce signaling overhead during multi-user multiple-input-multiple-output (MU-MIMO) beamforming training (BFT). The proposed method efficiently identifies stations (STAs) and shortens BFT time by considering transmit diversity.

Keywords:
Beamforming trainingIEEE 802.11ayMU-MIMOmmWave

Related Experiment Videos

Last Updated: May 23, 2026

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

Area of Science:

  • Wireless communication systems
  • Signal processing
  • Antenna theory

Background:

  • Multi-user multiple-input-multiple-output (MU-MIMO) beamforming training (BFT) is crucial for establishing directional antenna patterns between access points (APs) and stations (STAs).
  • Inefficient antenna weight vector (AWV) determination during BFT can lead to increased transmissions and prolonged training times.
  • Existing schemes using simultaneous multi-beam transmissions for signaling overhead mitigation overlook transmit diversity gains, resulting in redundant transmissions.

Purpose of the Study:

  • To propose a novel transmit antenna configuration scheme for MU-MIMO BFT.
  • To mitigate signaling overhead and reduce BFT duration.
  • To address the limitations of existing schemes by incorporating transmit diversity gains.

Main Methods:

  • Developing a new scheme that determines candidate AWVs using multiple beams.
  • Simultaneously transmitting action frames using multiple beams to identify reachable STAs.
  • Considering the transmit diversity of the inter-symbol interference (ISI) channel in multi-beam concurrent transmissions.

Main Results:

  • The proposed scheme effectively mitigates signaling overhead.
  • Numerical and simulation results show a reduction in BFT time compared to existing methods.
  • The scheme successfully identifies STAs within reach of multi-beam concurrent transmissions.

Conclusions:

  • The novel transmit antenna configuration scheme significantly shortens MU-MIMO BFT time.
  • Accounting for transmit diversity in multi-beam transmissions is key to reducing overhead.
  • This approach offers an efficient solution for optimizing BFT in wireless networks.