Reconfigurable Intelligent Surfaces 2.0: Beyond Diagonal Phase Shift Matrices [PDF]
IEEE Communications Magazine, 2023 Reconfigurable intelligent surface (RIS) has been envisioned as a promising technique to enable and enhance future wireless communications due to its potential to engineer the wireless channels in a cost-effective manner. Extensive research attention has
Hongyu Li +3 more
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Reconfigurable Intelligent Surfaces Relying on Non-Diagonal Phase Shift Matrices [PDF]
IEEE Transactions on Vehicular Technology, 2022 Reconfigurable intelligent surfaces (RIS) have been actively researched as a potential technique for future wireless communications, which intelligently ameliorate the signal propagation environment.
Qingchao Li +6 more
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Proximal Policy Optimization-Based Transmit Beamforming and Phase-Shift Design in an IRS-Aided ISAC System for the THz Band [PDF]
IEEE Journal on Selected Areas in Communications, 2022 In this paper, an IRS-aided integrated sensing and communications (ISAC) system operating in the terahertz (THz) band is proposed to maximize the system capacity.
Xiangnan Liu +5 more
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STAR-RISs: A Correlated T&R Phase-Shift Model and Practical Phase-Shift Configuration Strategies [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2021 A correlated transmission and reflection (T&R) phase-shift model is proposed for passive lossless simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs).
Jiaqi Xu +4 more
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Simultaneously Transmitting and Reflecting (STAR)-RISs: A Coupled Phase-Shift Model [PDF]
ICC 2022 - IEEE International Conference on Communications, 2021 A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided communication system is investigated, where an access point sends information to two users located on each side of the STAR-RIS. Different from current works
Yuanwei Liu +3 more
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Intelligent Reflecting Surface: Practical Phase Shift Model and Beamforming Optimization [PDF]
ICC 2020 - 2020 IEEE International Conference on Communications (ICC), 2019 Intelligent reflecting surface (IRS) that enables the control of the wireless propagation environment has been looked upon as a promising technology for boosting the spectrum and energy efficiency in future wireless communication systems.
Samith Abeywickrama, Rui Zhang, C. Yuen
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Channel Estimation and Passive Beamforming for Intelligent Reflecting Surface: Discrete Phase Shift and Progressive Refinement [PDF]
IEEE Journal on Selected Areas in Communications, 2019 Prior studies on intelligent reflecting surface (IRS) have mostly assumed perfect channel state information (CSI) available for designing the IRS passive beamforming as well as the continuously adjustable phase shift at each of its reflecting elements ...
Changsheng You +2 more
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Phase Shift Strategies in Phase Shifting Time Averaging Interferometry [PDF]
Experimental Techniques, 2021 AbstractClassical time-averaging interferometry technique is widely used for MEMS/MOEMS dynamic behavior investigations. It provides useful information on resonant vibration frequencies and mode shapes in the form of Bessel fringe images. To evaluate the information on objects’ vibration amplitude distribution, one needs to further process Bessel ...
A. Styk, H. Dziubecka - Bala
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Gate controlled anomalous phase shift in Al/InAs Josephson junctions [PDF]
Nature Communications, 2019 In a standard Josephson junction the current is zero when the phase difference between superconducting leads is zero. This condition is protected by parity and time-reversal symmetries.
W. Mayer +5 more
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Frontiers in Marine Science, 2021 Macroalgal forests play a key role in shallow temperate rocky reefs worldwide, supporting communities with high productivity and providing several ecosystem services.
Francesca Gizzi +14 more
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