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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Jiancheng An

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5 papers indexed here

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2026

Robust Multiuser Downlink Beamforming for Stacked Intelligent Metasurfaces With Imperfect CSI

This letter investigates robust multiuser downlink beamforming for a base-station-side stacked intelligent metasurface (SIM) with finite-resolution phase control and imperfect channel state information. Because the effective channel depends on the SIM configuration, we estimate the SIM-output-to-user channel from multi...

Shabih Ul Hassan, Jian-Cheng An, Fahim Niaz et al. · 1 citation
Open access 2026

Hierarchical Codebook-Based Analog Beamforming Design for SIM-Assisted Communication Systems

Stacked intelligent metasurface (SIM) can perform signal processing in the wave domain by intelligently optimizing the phase shifts of transmissive meta-elements on each layer. However, it typically requires high overhead to acquire channel state information. In this letter, we propose a hierarchical codebook design fo...

Zhi-Heng Yu, Jian-Cheng An, Lu Gan et al. · 0 citations
2026

Deep Unfolding for Joint Antenna Selection, Phase Shift Design, and Power Allocation in SIM-Assisted MU-MISO Systems

Stacked intelligent metasurfaces (SIMs) have emerged as a promising paradigm for wave-domain signal processing in next-generation wireless networks. In this paper, we investigate the joint optimization of antenna selection, SIM phase-shift design, and power allocation in SIM-assisted multiuser multiple-input single-out...

Shu-Mo Wang, Xiao-Qin Song, Jian-Cheng An et al. · 0 citations
Open access Aug 2026

Joint Power Allocation and Phase-Shift Design for Beyond-Diagonal Stacked Intelligent Metasurfaces-Aided ISAC Systems

Stacked intelligent metasurfaces (SIM) provide an efficient architecture for integrated sensing and communication (ISAC) with few radio-frequency (RF) chains. However, diagonal SIM provide only element-wise phase control, so balancing multiuser communication and sensing performance may require additional layers. In thi...

Y. Jiao, Qian Zhang, Xue-Jun Cheng et al. · 0 citations
Preprint Jul 2026

Bistatic Integrated Sensing and Communications with Flexible Intelligent Metasurfaces

We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), suitable for integrated sensing and communications (ISAC) in high-mobility scenarios. We show how the proposed FIM-parameterized DD (FPDD) channel model extends to multic...

Iván Alexander Morales Sandoval, Thushar Venkataramanaiah, K. R. R. Ranasinghe et al. · 0 citations

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