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Related papers: Two-Layer Stacked Intelligent Metasurfaces: Balanc…

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This paper introduces a novel framework for Edge Inference (EI) that bypasses the conventional practice of treating the wireless channel as noise. We utilize Stacked Intelligent Metasurfaces (SIMs) to control wireless propagation, enabling…

Emerging Technologies · Computer Science 2025-09-24 Kyriakos Stylianopoulos , George C. Alexandropoulos

In this paper, we investigate high-altitude platform station (HAPS) wireless networks for simultaneous non-orthogonal unicast and multicast transmissions. Specifically, stacked intelligent metasurface (SIM)-based wave-domain beamforming is…

Signal Processing · Electrical Eng. & Systems 2026-04-07 Ngoc Phuc Le , Mohamed-Slim Alouini

We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), which is suitable for integrated sensing and communications (ISAC) in high-mobility…

As the demand for ubiquitous connectivity and high-precision environmental awareness grows, integrated sensing and communication (ISAC) has emerged as a key technology for sixth-generation (6G) wireless networks. Intelligent metasurfaces…

Signal Processing · Electrical Eng. & Systems 2025-12-08 Shunyu Li , Tianqi Mao , Guangyao Liu , Fan Zhang , Ruiqi Liu , Meng Hua , Zhen Gao , Qingqing Wu , George K. Karagiannidis

Semantic communication systems aim to transmit task-relevant information between devices capable of artificial intelligence, but their performance can degrade when heterogeneous transmitter-receiver models produce misaligned latent…

Signal Processing · Electrical Eng. & Systems 2025-12-08 Mario Edoardo Pandolfo , Kyriakos Stylianopoulos , George C. Alexandropoulos , Paolo Di Lorenzo

This paper surveys the optimization frameworks and performance analysis methods for large intelligent surfaces (LIS), which have been emerging as strong candidates to support the sixth-generation wireless physical platforms (6G). Due to…

Flexible intelligent metasurface (FIM) technology holds immense potential for increasing the spectral efficiency and energy efficiency of wireless networks. In contrast to traditional rigid reconfigurable intelligent surfaces (RIS), an FIM…

Signal Processing · Electrical Eng. & Systems 2025-10-10 Hanwen Hu , Jiancheng An , Lu Gan , Naofal Al-Dhahir

With the impending arrival of the sixth generation (6G) of wireless communication technology, the telecommunications landscape is poised for another revolutionary transformation. At the forefront of this evolution are intelligent…

Networking and Internet Architecture · Computer Science 2024-05-07 Mayur Katwe , Aryan Kaushik , Lina Mohjazi , Mohammad Abualhayja'a , Davide Dardari , Keshav Singh , Muhammad Ali Imran , M. Majid Butt , Octavia A. Dobre

Introduced with the advent of statistical wireless channel models for high mobility communications and having a profound role in communication-centric (CC) integrated sensing and communications (ISAC), the doubly-dispersive (DD) channel…

Reconfigurable intelligent surfaces enhance wireless systems by reshaping propagation environments. However, dynamic metasurfaces (MSs) with numerous phase-shift elements incur undesired control and hardware costs. In contrast, static MSs…

Signal Processing · Electrical Eng. & Systems 2024-12-30 Ziyuan Zheng , Qingqing Wu , Wen Chen , Xiangming Wu , Weiren Zhu

Flexible Intelligent Metasurfaces (FIMs) enable wireless systems to adapt their three-dimensional geometry through morphing, thereby providing new spatial degrees of freedom. However, continuous deformation complicates the accurate…

Signal Processing · Electrical Eng. & Systems 2026-05-29 Vinícius L. Romano , André L. F. de Almeida , Daniel C. Araújo

The increasing demand for communication is degrading the electromagnetic (EM) transmission environment due to severe EM interference, significantly reducing the efficiency of the radio frequency (RF) spectrum. Metasurfaces, a promising…

Information Theory · Computer Science 2024-06-27 Kaining Wang , Bo Yang , Zhiwen Yu , Xuelin Cao , Mérouane Debbah , Chau Yuen

Intelligent surfaces that reshape electromagnetic waves are regarded as disruptive technologies for wireless networks. However, existing designs sit at two costly extremes: dynamic reconfigurable intelligent surfaces (RISs) offer fine beam…

Signal Processing · Electrical Eng. & Systems 2025-11-24 Ziyuan Zheng , Qingqing Wu , Wen Chen , Weiren Zhu , Ying Gao

Interference management is a central bottleneck in dense multi-antenna wireless networks. Therefore, in this study, we present a digital precoding-free hierarchical rate-splitting multiple access (HRSMA) architecture assisted by a stacked…

Information Theory · Computer Science 2025-10-29 Hiroaki Hashida , Boya Di

The integration of electromagnetic metasurfaces into wireless communications enables intelligent control of the propagation environment. Recently, flexible intelligent metasurfaces (FIMs) have evolved beyond conventional reconfigurable…

Signal Processing · Electrical Eng. & Systems 2026-01-23 Ling He , Vaibhav Kumar , Anastasios Papazafeiropoulos , Miaowen Wen , Le-Nam Tran , Marwa Chafii

The doubly-dispersive (DD) channel structure has played a pivotal role in wireless communications, particularly in high-mobility scenarios and integrated sensing and communications (ISAC), due to its ability to capture the key fading…

This paper proposes a novel liquid intelligent metasurface (LIM)-assisted downlink multi-user multiple-input single-output (MISO) system, wherein both the base station (BS) and the metasurface are respectively equipped with fluid antennas…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Li-Hsiang Shen

Stacked intelligent surfaces (SIS)s have been proposed recently as an enabling technology for Holographic Multiple Input Multiple Output (HMIMO) and Ultra-massive MIMO (umMIMO) technologies. Their utility can extend beyond spatial…

Signal Processing · Electrical Eng. & Systems 2025-10-03 Hibatallah Alwazani , Omran Abbas , Loic Markley , Anas Chaaban

The recent combination of the rising architectures, known as stacked intelligent metasurface (SIM) and holographic multiple-input multiple-output (HMIMO), drives toward breakthroughs for next-generation wireless communication systems. Given…

Information Theory · Computer Science 2025-02-19 Anastasios Papazafeiropoulos , Pandelis Kourtessis , Dimitra I. Kaklamani , Iakovos S. Venieris

With the versatile manipulation capability, programmable metasurfaces are rapidly advancing in their intelligence, integration, and commercialization levels. However, as the programmable metasurfaces scale up, their control configuration…

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