Hybrid Beamforming Design for Full-Duplex Millimeter Wave Massive MIMO Systems

Full-duplex(FD) operation at the base station (BS) enables simultaneous transmission and reception of signals and promises considerable increases in spectral efficiency (SE). FD operation however results in a new source of interference- self-interference (SI)- causing analog-to-digital converter (AD...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2024-11, Vol.73 (11), p.17041-17058
Main Authors: Balti, Elyes, Akoum, Salam, Alfalujah, Iyad, Evans, Brian L.
Format: Article
Language:English
Subjects:
5G mobile communication
Analog to digital converters
Antenna arrays
Antennas
Array signal processing
Beamforming
Full-duplex
hybrid beamforming
Interference cancellation
Long Term Evolution
millimeter wave
Millimeter wave communication
Millimeter waves
Radio frequency
self-interference suppression
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Summary:Full-duplex(FD) operation at the base station (BS) enables simultaneous transmission and reception of signals and promises considerable increases in spectral efficiency (SE). FD operation however results in a new source of interference- self-interference (SI)- causing analog-to-digital converter (ADC) saturation and a subsequent reduction in SE gains. In this paper, we present a novel design of precoders and combiners for millimeter wave (mmWave) BSs that leverages a hybrid analog/digital beamforming architecture. The proposed design balances SI reduction in the analog domain to avoid ADC saturation and in the digital domain to enable increased SE. Our hybrid beamforming design requires a few iterations to converge and provides reasonable performance, significantly improving upon related work in the literature. For example, our hybrid FD design achieves SE gains of 1.05x to 3.09x vs. several leading hybrid FD designs; an SE gain of 1.91x vs. half-duplex (HD); and an SE loss of 1.10x vs. an all-digital FD beamformer. The all-digital FD beamformer assumes there is no ADC saturation and uses one RF chain per antenna (which has prohibitive power consumption for a large number of antennas).
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2024.3424774