Energy-efficient Time-modulated Beam-forming for Joint Communication-Radar Systems

To alleviate the shortage of spectral resources as well as to reduce the weight, volume, and power consumption of wireless systems, joint communication-radar (JCR) systems have become a focus of interest in both civil and military fields. JCR systems based on time-modulated arrays (TMAs) constitute...

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Bibliographic Details
Published inarXiv.org
Main Authors Shan, Chengzhao, Zhang, Jiayan, Ma, Yongkui, Sha, Xuejun, Zhao, Honglin, Zhang, Jiankang, Hanzo, Lajos
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 07.08.2023
Subjects
Beam steering
Beamforming
Optimization
Power consumption
Radar equipment
Weight reduction
Wireless communications
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Summary:To alleviate the shortage of spectral resources as well as to reduce the weight, volume, and power consumption of wireless systems, joint communication-radar (JCR) systems have become a focus of interest in both civil and military fields. JCR systems based on time-modulated arrays (TMAs) constitute an attractive solution as a benefit of their high degree of beam steering freedom, low cost, and high accuracy. However, their sideband radiation results in energy loss, which is an inherent drawback. Hence the energy-efficiency optimization of TMA-based JCR systems is of salient importance, but most of the existing TMA energy-efficiency optimization methods do not apply to JCR systems. To circumvent their problems, a single-sideband structure is designed for flexibly reconfigurable energy-efficient TMA beam steering. First, some preliminaries on single-sideband TMAs are introduced. Then, a closed-form expression is derived for characterizing the energy efficiency. Finally, the theoretical results are validated by simulations.
ISSN:2331-8422
DOI:10.48550/arxiv.2308.03383