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Advances in the amplification and manipulation of ultrashort laser pulses has led to revolutions in several areas. Examples include chirped pulse amplification for generating high peak-power lasers, power-scalable amplification techniques,…

Optics · Physics 2016-08-24 C. R. Phillips , B. W. Mayer , L. Gallmann , U. Keller

Anomaly detection is a significant problem faced in several research areas. Detecting and correctly classifying something unseen as anomalous is a challenging problem that has been tackled in many different manners over the years.…

Machine Learning · Computer Science 2021-09-15 Federico Di Mattia , Paolo Galeone , Michele De Simoni , Emanuele Ghelfi

Terahertz (THz) communications have been envisioned as a promising enabler to provide ultra-high data transmission for sixth generation (6G) wireless networks. To tackle the blockage vulnerability brought by severe path attenuation and poor…

Information Theory · Computer Science 2021-10-14 Xinying Ma , Zhi Chen , Longfei Yan , Chong Han , Qiye Wen

This paper presents a novel method for synthesizing new physical layer modulation and coding schemes for communications systems using a learning-based approach which does not require an analytic model of the impairments in the channel. It…

Signal Processing · Electrical Eng. & Systems 2018-03-09 Timothy J. O'Shea , Tamoghna Roy , Nathan West , Benjamin C. Hilburn

Generative Adversarial Networks fostered a newfound interest in generative models, resulting in a swelling wave of new works that new-coming researchers may find formidable to surf. In this paper, we intend to help those researchers, by…

Computer Vision and Pattern Recognition · Computer Science 2019-10-30 Alceu Bissoto , Eduardo Valle , Sandra Avila

This paper introduces a high-performance artificial intelligence operating system tailored for low-altitude aviation, designed to address key challenges such as real-time task execution, computational efficiency, and seamless modular…

Machine Learning · Computer Science 2025-01-07 Minzhe Tan , Xinlin Fan , Jian He , Yi Hou , Zhan Liu , Yaopeng Jiang , Y. M. Jiang

Far-infrared astronomy has advanced rapidly since its inception in the late 1950's, driven by a maturing technology base and an expanding community of researchers. This advancement has shown that observations at far-infrared wavelengths are…

Despite remarkable advancements, mainstream gaze estimation techniques, particularly appearance-based methods, often suffer from performance degradation in uncontrolled environments due to variations in illumination and individual facial…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Ruijie Zhao , Pinyan Tang , Sihui Luo

Nonlinear light-matter interactions are typically enhanced by increasing the local field and its interaction time with matter. Conventional methods to achieve these goals are based on resonances or slow-light effects. However, these methods…

Generative adversarial networks are used to generate images but still their convergence properties are not well understood. There have been a few studies who intended to investigate the stability properties of GANs as a dynamical system.…

Machine Learning · Statistics 2018-03-15 Arash Mehrjou

This paper adopts the antenna selection technique to enhance the covert rate in a wireless communication network comprised of a source, a destination , an external jammer and an eavesdropper. In the covert communication, the level of…

Signal Processing · Electrical Eng. & Systems 2018-12-27 Morteza Sarkheil , Paeiz Azmi , Moslem Forouzesh , Ali Kuhestani

In this paper, a novel approach that uses an unmanned aerial vehicle (UAV)-carried intelligent reflector (IR) is proposed to enhance the performance of millimeter wave (mmW) networks. In particular, the UAV-IR is used to intelligently…

Information Theory · Computer Science 2019-08-21 Qianqian Zhang , Walid Saad , Mehdi Bennis

We employ transformation optics to study analytically nonlinear wave mixing from a singular geometry of touching plasmonic wires. We obtain the analytic solution of the near-field and complement it with a solution of the far-field…

Optics · Physics 2021-05-05 Shimon Elkabetz , K. Nireekshan Reddy , Y. Sivan

Intelligent reflecting surfaces (IRSs) are considered a promising technology that can smartly reconfigure the wireless environment to enhance the performance of future wireless networks. However, the deployment of IRSs still faces…

Networking and Internet Architecture · Computer Science 2022-11-08 Faisal Naeem , Georges Kaddoum , Saud Khan , Komal S. Khan

We propose a new technique that boosts the convergence of training generative adversarial networks. Generally, the rate of training deep models reduces severely after multiple iterations. A key reason for this phenomenon is that a deep…

Machine Learning · Statistics 2018-06-15 Atsushi Nitanda , Taiji Suzuki

Several km-scale gravitational-wave detectors have been constructed world wide. These instruments combine a number of advanced technologies to push the limits of precision length measurement. The core devices are laser interferometers of a…

General Relativity and Quantum Cosmology · Physics 2015-12-16 Charlotte Bond , Daniel Brown , Andreas Freise , Kenneth Strain

The abundant optical spectrum is a promising part of the electromagnetic spectrum for 6G communication systems. The visible light spectrum which is a part of the optical spectrum, can be used to provide communication and illumination…

Signal Processing · Electrical Eng. & Systems 2020-08-06 Osama Zwaid Alsulami , T. E. H. El-Gorashi , Jaafar M. H. Elmirghani

The use of Immersed Gratings offers advantages for both space- and ground-based spectrographs. As diffraction takes place inside the high-index medium, the optical path difference and angular dispersion are boosted proportionally, thereby…

Instrumentation and Methods for Astrophysics · Physics 2015-10-16 Michiel Rodenhuis , Paul J. J. Tol , Tonny H. M. Coppens , Phillip P. Laubert , Aaldert H. van Amerongen

This paper proposes an arrayed-waveguide grating (AWG) based wavelength-division-multiplexing (WDM) shuffle network. Compared with previous optical shuffle networks, our proposal is compact, easy to implement, highly scalable, and cost…

Other Computer Science · Computer Science 2017-07-31 Jingjie Ding , Tong Ye , Tony T. Lee , Weisheng Hu

It has recently been shown that the transmission of electromagnetic fields through sub-wavelength slits (parallel to the electric field direction) in a thin metallic screen can be greatly enhanced by covering one side of the screen with a…