Aug 2026· 2026 IEEE/CIC International Conference on Communications in China (ICCC)· pp. 1437-1442· 0 citations· 20 references
Abstract
Extremely large-scale antenna arrays (ELAAs) have emerged as a key technology for meeting the unprecedented performance demands of next-generation wireless systems. To improve their practical deployability, we propose metasurfaceenabled extremely large-scale antenna (MELA) systems, which replace conventional phase-shifter-based front ends with reconfigurable transmissive metasurfaces, allowing a small number of active feeds to wirelessly excite a large passive aperture. Physically grounded models are developed to characterize electromagnetic field propagation through individual transmissive unit cells, capturing the fundamental physics of wave transformation and transmission. Based on the resulting channel model, a beamspace scanning strategy is devised for angular acquisition in hybrid near- and far-field scenarios. Numerical results validate the fidelity of the electromagnetic modeling and the effectiveness of the proposed angle estimation, highlighting MELA as a promising architecture for practical ELAA deployments.
Terahertz (THz) systems in the range of 100 GHz–10 THz combine large apertures and short wavelengths, resulting in an extended radiative near field where spherical wavefronts dominate electromagnetic propagation. In this near-field (NF) realm, classical far-field beam steering and stationary channel assumptions break d...
Jun-Jie Wu, Priyangshu Sen, H. Guerboukha et al.· Terahertz Emitters, Receiver...· 0 citations
As wireless systems evolve toward 6G and beyond, antenna apertures are increasingly expected to become more programmable, multifunctional, and responsive to diverse communication, sensing, and imaging requirements. Dynamic metasurface antennas (DMAs) offer a promising hardware pathway toward this vision by integrating...
Stacked intelligent metasurfaces (SIM) provide a low-power means for MIMO transmission and reception using large multi-layer apertures that are digitally controlled. In this letter, we develop a SIM model that is consistent with metasurface theory. We use the Lorentzian function to emulate the amplitude-phase trade-off...
Alfredo Gonzalez, Tharmalingam Ratnarajah, Robert W. Heath· IEEE Wireless Communications...· 0 citations
A circuit-based metasurface is proposed for multiuser orthogonal beamforming and multiple-input-multiple-output (MIMO) wireless communications. The metasurface consists of several pairs of propagation and phased shifter layers, stacked several times to form an electrically thin structure that provides the necessary non...
Feiyu Shan, Hao Luo, Ahmed Alkhateeb et al.· Metamaterials· 0 citations
Achieving multifunctional electromagnetic wave manipulation in full-space represents a long-standing scientific challenge. Conventional metasurfaces typically enable the manipulation of electromagnetic waves in the half-space and lack the capability to engineer multidirectional waves in full-space, resulting in low spa...
Su-Ying Li, Fan Ding, Yang Fu et al.· Journal of Optics· 0 citations
Facing the urgent demand of the sixth-generation (6G) mobile communication for ultra-large bandwidth and ultra-high speed wireless transmission, terahertz communication has become a core candidate technology, but its high path loss and other problems seriously limit the system performance, while beamforming technology...
Xiao-Tian Du· ITM Web of Conferences· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
