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Integrated sensing and communication (ISAC) for next-generation networks targets robust operation under high mobility and high Doppler spread, leading to severe inter-carrier interference (ICI) in systems based on orthogonal…

信号处理 · 电气工程与系统科学 2025-12-17 Bruno Felipe Costa , Anup Mishra , Israel Leyva-Mayorga , Taufik Abrão , Petar Popovski

Principal component analysis (PCA) is a statistical technique commonly used in multivariate data analysis. However, PCA can be difficult to interpret and explain since the principal components (PCs) are linear combinations of the original…

数学软件 · 计算机科学 2013-12-24 W. Liu , H. Zhang , D. Tao , Y. Wang , K. Lu

In this paper, channel estimation for millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems with one-bit analog-to-digital converters (ADCs) is considered. In the mmWave band, the number of propagation paths is…

信号处理 · 电气工程与系统科学 2022-07-14 In-soo Kim , Junil Choi

Based on the quantum mechanical "Shortcut-to-Adiabatic passage" (STAP), a novel design for the efficient and robust multiple beam splitter is presented in this paper. This multiple beam splitter consists of one input and $N$ output…

光学 · 物理学 2024-10-29 Jiahui Zhang , Yating Wei , Li Deng , Yueping Niu , Shangqing Gong

Standard Gaussian Process (GP) regression, a powerful machine learning tool, is computationally expensive when it is applied to large datasets, and potentially inaccurate when data points are sparsely distributed in a high-dimensional…

机器学习 · 计算机科学 2016-03-08 Z. Zhang , K. Duraisamy , N. A. Gumerov

This work investigates the use of pulse stretching inverters for monitoring the variation of flux and Linear Energy Transfer (LET) of energetic particles. The basic particle detector consists of two cascaded pulse stretching (skew-sized)…

仪器与探测器 · 物理学 2021-09-01 Marko Andjelkovic , Junchao Chen , Aleksandar Simevski , Oliver Schrape , Milos Krstic , Rolf Kraemer

Multi-Party Computation (MPC) is a technique enabling data from several sources to be used in a secure computation revealing only the result while protecting the original data, facilitating shared utilization of data sets gathered by…

密码学与安全 · 计算机科学 2020-07-03 Pierre-Francois Wolfe , Rushi Patel , Robert Munafo , Mayank Varia , Martin Herbordt

Conventional surface-relief gratings are inefficient at deflecting normally-incident light by large angles. This constrains their use in many applications and limits the overall efficiency of any optical instrument integrating gratings.…

光学 · 物理学 2021-11-19 Ashutosh Patri , Stephane Kena-Cohen , Christophe Caloz

To investigate the physics of picosecond gain-switching dynamics in single-mode lasers under femtosecond optical pumping at room temperature, we designed and fabricated first-order surface-grating GaAs distributed-feedback (DFB) lasers with…

Wave-based signal processing has witnessed a significant expansion of interest in a variety of science and engineering disciplines, as it provides new opportunities for achieving high-speed and low-power operations. Although flat optics…

This paper introduces the sparse periodic systolic (SPS) dataflow, which advances the state-of-the-art hardware accelerator for supporting lightweight neural networks. Specifically, the SPS dataflow enables a novel hardware design approach…

计算机视觉与模式识别 · 计算机科学 2022-07-04 Jung Hwan Heo , Arash Fayyazi , Amirhossein Esmaili , Massoud Pedram

We demonstrate efficient diffraction of intense ultrashort laser pulses using optical-field-ionization-induced plasma-neutral gratings formed by spatially structured ionization of a neutral molecular gas in the interference field of two…

A tilted-pulse-front pumped terahertz pulse source is proposed for the generation of extremely high field single-cycle terahertz pulses. The very simple and compact source consists of a single crystal slab having a blazed reflection grating…

Grating lobes arise from the periodic nature of element spacing in the optical phased array. Essentially, the phased array performs the Spatial Fourier Transform on light; the steering capability of the main lobe is governed by phase shift…

应用物理 · 物理学 2024-02-20 Bowen Yu , Dachuan Wu , Yasha Yi

Scattering of femtosecond laser pulses on resonant transmission and reflection gratings made of dispersive (Drude metals) and dielectric materials is studied by a time-domain numerical algorithm for Maxwell's theory of linear passive…

计算物理 · 物理学 2009-11-10 Andrei G. Borisov , Sergei V. Shabanov

This paper considers an intelligent reflecting surface (IRS) assisted multi-input multi-output (MIMO) power splitting (PS) based simultaneous wireless information and power transfer (SWIPT) system with multiple PS receivers (PSRs). The…

信息论 · 计算机科学 2021-06-01 Chen He , Xie Xie , Kun Yang , Z. Jane Wang

We propose a novel laser configuration that can output 3.5-$\mu$m nanosecond laser pulses based on a simple and monolithic fiber structure. Cascade-gain-switching, which converts the wavelength of nanosecond pulses from 1.55 $\mu$m to 3.5…

光学 · 物理学 2018-05-29 Jianlong Yang , Haizhe Zhong , Yulong Tang , Shuaiyi Zhang , Dianyuan Fan

In this paper, we combine the design of band-pass frequency selective surfaces (FSSs) with polarization converters to realize a broadband frequency-selective polarization converter (FSPC) with lowbackward scattering, which consists of the…

应用物理 · 物理学 2019-11-25 Lingling Wang , Shaobin Liu , Xiangkun Kong , Haifeng Zhang , Yongdiao Wen , Qiming Yu

The mid-infrared spectral region holds growing importance for applications such as gas sensing and spectroscopy. Although compact ultrashort pulse laser sources are essential to enable these applications, their realization in this spectral…

Inspired by the ever-increasing demand for higher data transmission rates and the tremendous attention toward all-optical signal processing based on miniaturized nanophotonics, in this paper, for the first time, we investigate the…