Hybrid Beamforming for Wideband Millimeter Wave MIMO Integrated Sensing and Communications

In this letter, we propose a true-time-delayer network assisted hybrid beamforming scheme for wideband millimeter wave multiple-input multiple-output integrated sensing and communications. By jointly optimizing the digital beamformer, the true-time-delayer network and the phase shifter network, we a...

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Veröffentlicht in:IEEE communications letters Jg. 29; H. 3; S. 462 - 466
Hauptverfasser: Guo, Junpeng, Qi, Chenhao
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.03.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Alternating direction method of multipliers
Array signal processing
Beamforming
Broadband
Constraints
Decoupling
Frequency modulation
Integrated sensing and communication
integrated sensing and communications
Interference
Millimeter waves
Optimization
Phase shifters
Phasors
Radio frequency
second-order cone programming
Signal to noise ratio
Simulation
Subcarriers
Vectors
Wideband
wideband hybrid beamforming
ISSN:1089-7798, 1558-2558
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Zusammenfassung:In this letter, we propose a true-time-delayer network assisted hybrid beamforming scheme for wideband millimeter wave multiple-input multiple-output integrated sensing and communications. By jointly optimizing the digital beamformer, the true-time-delayer network and the phase shifter network, we aim at making the sum of beam patterns across all subcarriers approach a predefined sensing beam pattern, subject to the constraints of the signal-to-interference-plus-noise ratio requirements of communication users and the maximum transmit power of the base station. To improve the design flexibility, the sensing beam pattern is distributed among different subcarriers for optimization, with phase vectors introduced to transform the modulus summation into a linear summation. Additionally, by decoupling the multi-variable constraint, we employ the alternating direction method of multipliers to decompose the original problem into manageable subproblems, which are iteratively optimized. Simulation results demonstrate that the proposed scheme outperforms existing hybrid beamforming schemes in terms of beam pattern and sensing performance.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2024.3524498