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arXiv · 2406.04762

Holographic Intelligence Surface Assisted Integrated Sensing and Communication

Zhuoyang Liu·Yuchen Zhang·Haiyang Zhang·Feng Xu·Yonina C. Eldar
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Abstract

Traditional discrete-array-based systems fail to exploit interactions between closely spaced antennas, resulting in inadequate utilization of the aperture resource. In this paper, we propose a holographic intelligence surface (HIS) assisted integrated sensing and communication (HISAC) system, wherein both the transmitter and receiver are fabricated using a continuous-aperture array. A continuous-discrete transformation of the HIS pattern based on the Fourier transform is proposed, converting the continuous pattern design into a discrete beamforming design. We formulate a joint transmit-receive beamforming optimization problem for the HISAC system, aiming to balance the performance of multi-target sensing while fulfilling the performance requirement of multi-user communication. To solve the non-convex problem with coupled variables, an alternating optimization-based algorithm is proposed to optimize the HISAC transmit-receive beamforming in an alternate manner. Specifically, the transmit beamforming design is solved by decoupling into a series of feasibility-checking sub-problems while the receive beamforming is determined by the Rayleigh quotient-based method. Simulation results demonstrate the superiority of the proposed HISAC system over traditional discrete-array-based ISAC systems, achieving significantly higher sensing performance while guaranteeing predetermined communication performance.

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Zhuoyang Liu, Yuchen Zhang, Haiyang Zhang, Feng Xu, Yonina C. Eldar. 2024-06-07. Holographic Intelligence Surface Assisted Integrated Sensing and Communication. https://arxiv.org/abs/2406.04762

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