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arXiv · 2308.03383

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

Chengzhao Shan·Jiayan Zhang·Yongkui Ma·Xuejun Sha·Honglin Zhao·Jiankang Zhang·Lajos Hanzo
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Abstract

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.

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Chengzhao Shan, Jiayan Zhang, Yongkui Ma, Xuejun Sha, Honglin Zhao, Jiankang Zhang, Lajos Hanzo. 2023-08-07. Energy-efficient Time-modulated Beam-forming for Joint Communication-Radar Systems. https://doi.org/10.1109/tgcn.2023.3302899

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