https://gustybear.github.io/author/alvin-yang/Alvin YangHugo Blox Builder (https://hugoblox.com)en-usMon, 10 Nov 2025 00:00:00 +0000https://gustybear.github.io/author/alvin-yang/avatar_hu_53b5ee7d62928e4f.pnghttps://gustybear.github.io/author/alvin-yang/https://gustybear.github.io/publication/landika-optimized-irs-positioning-for-phase-tuned-2025/Mon, 10 Nov 2025 00:00:00 +0000https://gustybear.github.io/publication/landika-optimized-irs-positioning-for-phase-tuned-2025/https://gustybear.github.io/publication/chen-secure-irs-defending-against-adversarial-2025/Mon, 10 Nov 2025 00:00:00 +0000https://gustybear.github.io/publication/chen-secure-irs-defending-against-adversarial-2025/https://gustybear.github.io/publication/ishrak-sidesense-robust-physiological-motion-2025/Mon, 10 Nov 2025 00:00:00 +0000https://gustybear.github.io/publication/ishrak-sidesense-robust-physiological-motion-2025/https://gustybear.github.io/facility/testbed_holosmartwe/Mon, 19 May 2025 04:14:54 -0800https://gustybear.github.io/facility/testbed_holosmartwe/<h1 id="executive-summary">Executive Summary</h1> <p>This lab-scale <strong>Holographic Beamforming Surface–Enabled Smart Wireless Environment testbed</strong> enables controlled experimentation on environment-aware and RIS-assisted mmWave propagation. Operating at <strong>28 GHz</strong>, the platform integrates a programmable <strong>reconfigurable intelligent surface (RIS)</strong>, <strong>active mmWave beamforming</strong>, and a flexible <strong>RF measurement backend</strong> to dynamically manipulate electromagnetic wavefronts at both the transmitter and environmental levels. The testbed supports experimental research on holographic beamforming, surface-assisted channel shaping, and smart wireless environments for future <strong>5G/6G</strong> and <strong>ISAC</strong> systems.</p> <h1 id="core-components">Core Components</h1> <h2 id="reconfigurable-intelligent-surface-ris">Reconfigurable Intelligent Surface (RIS)</h2> <p>A programmable <strong>RIS</strong> functions as a spatial electromagnetic aperture, enabling dynamic control of reflection phase and amplitude for wavefront shaping, beam redirection, and holographic focusing.</p> <h2 id="tmytek-bbox-one-mmwave-beamformer">TMYTEK BBox One mmWave Beamformer</h2> <p>The <strong>TMYTEK BBox One</strong> provides programmable beamforming at <strong>28 GHz</strong> with electronic phase and gain control, supporting rapid beam steering and codebook-based operation.</p> <h2 id="directive-mmwave-illumination">Directive mmWave Illumination</h2> <p>A <strong>28 GHz horn antenna</strong> delivers stable, high-gain illumination of the RIS and measurement region, enabling repeatable and well-characterized propagation experiments.</p> <h2 id="rf-switching-and-measurement">RF Switching and Measurement</h2> <p>A <strong>custom RF switch matrix</strong> and <strong>Keysight FieldFox microwave analyzer</strong> support flexible signal routing and wideband channel measurement for systematic RIS-assisted characterization.</p> <h2 id="spatial-probing">Spatial Probing</h2> <p>Calibrated <strong>monopole antennas</strong> mounted on precision positioning stages enable spatial channel sampling and beam profiling.</p> <h1 id="capabilities">Capabilities</h1> <h2 id="holographic-and-ris-assisted-beamforming">Holographic and RIS-Assisted Beamforming</h2> <ul> <li>Programmable wavefront synthesis and spatial focusing</li> <li>Environment-level beam steering and reflection control</li> </ul> <h2 id="mmwave-channel-characterization">mmWave Channel Characterization</h2> <ul> <li>Wideband channel response measurement</li> <li>Spatial field mapping and repeatable benchmarking</li> </ul> <h2 id="smart-wireless-environment-research">Smart Wireless Environment Research</h2> <ul> <li>Environment-aware propagation control</li> <li>Foundations for AI-driven and surface-assisted wireless systems</li> </ul> <h2 id="isac-oriented-extensions">ISAC-Oriented Extensions</h2> <ul> <li>Surface-assisted sensing and localization</li> <li>Joint communication–environment manipulation</li> </ul>https://gustybear.github.io/publication/zheng-insider-resistant-context-based-pairing-2021/Tue, 07 Dec 2021 00:00:00 +0000https://gustybear.github.io/publication/zheng-insider-resistant-context-based-pairing-2021/https://gustybear.github.io/publication/melcher-i-jam-channel-randomization-2020/Thu, 09 Jul 2020 00:00:00 +0000https://gustybear.github.io/publication/melcher-i-jam-channel-randomization-2020/https://gustybear.github.io/publication/troglia-fa-ir-federated-incumbent-2019/Fri, 01 Nov 2019 00:00:00 +0000https://gustybear.github.io/publication/troglia-fa-ir-federated-incumbent-2019/