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arXiv · 2507.14018

Distortion-Aware Hybrid Beamforming for Integrated Sensing and Communication

Zeyuan Zhang·Yue Xiu·Phee Lep Yeoh·Guangyi Liu·Zixing Wu·Ning Wei
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Abstract

This paper investigates a practical partially-connected hybrid beamforming transmitter for integrated sensing and communication (ISAC) with distortion from nonlinear power amplification. For this ISAC system, we formulate a communication rate and sensing mutual information maximization problem driven by our distortion-aware hybrid beamforming design. To address this non-convex problem, we first solve for a fully digital beamforming matrix by alternatively solving three sub-problems using manifold optimization (MO) and our derived closed-form solutions. The analog and digital beamforming matrices are then obtained through a decomposition algorithm. Numerical results demonstrate that the proposed algorithm can improve overall ISAC performance compared to traditional beamforming methods.

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Zeyuan Zhang, Yue Xiu, Phee Lep Yeoh, Guangyi Liu, Zixing Wu, Ning Wei. 2025-07-18. Distortion-Aware Hybrid Beamforming for Integrated Sensing and Communication. https://arxiv.org/abs/2507.14018

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