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In this paper, we consider the robust beamforming design in a reconfigurable intelligent surface (RIS)-aided cell-free (CF) system considering the channel state information (CSI) uncertainties of both the direct channels and cascaded…

信息论 · 计算机科学 2023-05-10 Jiacheng Yao , Jindan Xu , Wei Xu , Derrick Wing Kwan Ng , Chau Yuen , Xiaohu You

The emission process of Fast Radio Bursts (FRBs) remains unknown. We investigate whether the synchrotron maser emission from relativistic shocks in a magnetar wind can explain the observed FRB properties. We perform particle-in-cell (PIC)…

高能天体物理现象 · 物理学 2019-03-13 Illya Plotnikov , Lorenzo Sironi

This paper studies transmit beamforming design in an integrated sensing and communication (ISAC) system, where a base station sends symbols to perform downlink multi-user communication and sense an extended target simultaneously. We first…

信息论 · 计算机科学 2023-12-19 Yiqiu Wang , Meixia Tao , Shu Sun

This paper studies the performance trade-off in a multi-user backscatter communication (BackCom) system for integrated sensing and communications (ISAC), where the multi-antenna ISAC transmitter sends excitation signals to power multiple…

信息论 · 计算机科学 2024-06-04 Yuanming Tian , Dan Wang , Chuan Huang , Wei Zhang

We have prepared meta-atoms based on radio frequency superconducting quantum interference devices (RF SQUIDs) and examined their tunability with dc magnetic field, rf current, and temperature. RF SQUIDs are superconducting split ring…

超导电性 · 物理学 2013-12-24 M. Trepanier , Daimeng Zhang , Oleg Mukhanov , Steven M. Anlage

Thermal boundary conductance (TBC) at dissimilar interfaces imposes a fundamental limit on electronic device performance, yet predicting and understanding heat transport across realistic, disordered boundaries remains elusive. Here, we…

The topological state that emerges at the surface of a topological insulator (TI) and at the TI-substrate interface are studied in metal-hBN-Bi2Se3 capacitors. By measuring the RF admittance of the capacitors versus gate voltage, we extract…

The irradiation represents a useful tool for determining the characteristics of defects in semiconductors as well as a method to evaluate their degradation, fact with important technological consequences. In this contribution, starting from…

仪器与探测器 · 物理学 2008-11-26 Sorina Lazanu , Ionel Lazanu

Capacitively coupled radio-frequency (CCRF) CF_4 plasmas have been found to exhibit a self-organized striated structure at operating conditions, where the plasma is strongly electronegative and the ion-ion plasma in the bulk region (largely…

等离子体物理 · 物理学 2017-08-02 Yong-Xin Liu , Ihor Korolov , Edmund Schüngel , You-Nian Wang , Zoltán Donkó , Julian Schulze

A method for designing transformation electromagnetics devices using tensor impedance surfaces (TISs) is presented. The method is first applied to idealized tensor impedance boundary conditions (TIBCs), and later to printed-circuit tensor…

经典物理 · 物理学 2018-06-13 Amit M. Patel , Anthony Grbic

Integrated sensing and communication (ISAC) in monostatic in-band full-duplex (IBFD) systems encounters significant challenges due to self-interference (SI) at the radar receiver during concurrent communication and radar operations. This…

信号处理 · 电气工程与系统科学 2025-10-16 Abdelali Arous , Hamza Haif , Huseyin Arslan

This paper proposes a framework for designing robust precoders for a multi-input single-output (MISO) system that performs integrated sensing and communication (ISAC) across multiple cells and users. We use Cramer-Rao-Bound (CRB) to measure…

信息论 · 计算机科学 2024-02-29 Nithin Babu , Christos Masouros , Constantinos B. Papadias , Yonina C. Eldar

Broad bandwidth, infrared light sources have the potential to revolutionize inertial confinement fusion (ICF) by suppressing laser-plasma instabilities. There is, however, a tradeoff: The broad bandwidth precludes high efficiency conversion…

等离子体物理 · 物理学 2021-12-08 J. P. Palastro , J. G. Shaw , R. K. Follett , A. Colaïtis , D. Turnbull , A. Maximov , V. Goncharov , D. H. Froula

A simultaneously transmitting and reflecting surface (STARS) assisted near-field (NF) integrated sensing and communication (ISAC) framework is proposed, where the radio sensors are installed on the STARS to directly conduct the…

信号处理 · 电气工程与系统科学 2025-06-03 Na Xue , Xidong Mu , Yue Chen , Yuanwei Liu

Integrated Sensing and Communication (ISAC) systems face stringent hardware constraints, particularly regarding the high Peak-to-Average Power Ratio (PAPR) of standard OFDM, which necessitates power amplifier (PA) back-off and reduces…

信号处理 · 电气工程与系统科学 2026-03-12 Amir Bouziane , Huseyin Arslan

This paper proposes an anti-interference affine frequency division multiplexing (AFDM) system to ensure reliability and resource efficiency under malicious high-power interference originating from adversarial devices in high-mobility…

信息论 · 计算机科学 2025-12-18 Peng Yuan , Zulin Wang , Tao Luo , Yuanhan Ni

Self-consistent field theory (SCFT) has proven to be a powerful tool for modeling equilibrium microstructures of soft materials, particularly for multiblock polymers. A very successful approach to numerically solving the SCFT set of…

软凝聚态物质 · 物理学 2017-01-04 David M. Ackerman , Kris Delaney , Glenn H. Fredrickson , Baskar Ganapathysubramanian

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…

信息论 · 计算机科学 2020-03-25 Changsheng You , Beixiong Zheng , Rui Zhang

MRI radiofrequency (RF) coils are ultimately limited by conductor loss, thermal noise, and reciprocity constraints associated with conventional metallic boundary conditions. These limitations become more severe at higher static fields,…

介观与纳米尺度物理 · 物理学 2025-12-23 Zoran Milosavljevic

The integration of communication, sensing, and wireless power transfer (WPT) is a cornerstone of 6G intelligent IoT. However, relying on traditional beamforming imposes prohibitive overheads due to complex channel state information (CSI)…

信号处理 · 电气工程与系统科学 2025-12-10 Yixuan Guo , Mingliang Xiong , Qingwen Liu