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Triple sum-frequency (TSF) spectroscopy is a recently-developed methodology that enables collection of multidimensional spectra by resonantly exciting multiple quantum coherences of vibrational and electronic states. This work reports the…

光学 · 物理学 2018-08-23 Darien J. Morrow , Daniel D. Kohler , Kyle J. Czech , John C. Wright

Infrared small target detection (ISTD) faces two major challenges: a lack of discernible target texture and severe background clutter, which results in the background obscuring the target. To enhance targets and suppress backgrounds, we…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Chen Hu , Mingyu Zhou , Shuai Yuan , Hongbo Hu , Zhenming Peng , Tian Pu , Xiying Li

The raw depth images captured by RGB-D cameras using Time-of-Flight (TOF) or structured light often suffer from incomplete depth values due to weak reflections, boundary shadows, and artifacts, which limit their applications in downstream…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Zihui Zhao , Yifei Zhang , Zheng Wang , Yang Li , Kui Jiang , Zihan Geng , Chia-Wen Lin

Multidimensional Index Modulations (IM) are a novel alternative to conventional modulations which can bring considerable benefits for future wireless networks. Within this scope, in this paper we present a new scheme, named as…

信号处理 · 电气工程与系统科学 2021-08-09 Vasco Velez , Joao Pedro Pavia , Nuno Souto , Pedro Sebastiao , Americo Correia

Purpose: Prenatal ultrasound is a key tool in evaluating fetal structural development and detecting abnormalities, contributing to reduced perinatal complications and improved neonatal survival. Accurate identification of standard fetal…

计算机视觉与模式识别 · 计算机科学 2025-08-14 Shengjun Zhu , Siyu Liu , Runqing Xiong , Liping Zheng , Duo Ma , Rongshang Chen , Jiaxin Cai

Identification of the type of communication technology and/or modulation scheme based on detected radio signal are challenging problems encountered in a variety of applications including spectrum allocation and radio interference…

信号处理 · 电气工程与系统科学 2020-11-18 Ziqi Ke , Haris Vikalo

The matched filter (MF) is widely used to detect signals hidden within the noise. If the noise is Gaussian, its performances are well-known and describable in an elegant analytical form. The treatment of non-Gaussian noises is often…

天体物理仪器与方法 · 物理学 2018-08-08 Roberto Vio , Paola Andreani

Spiral waves are ubiquitous spatiotemporal patterns that occur in various excitable systems. In cardiac tissue, the formation of these spiral waves is associated with life-threatening arrhythmias, and, therefore, it is important to study…

生物物理 · 物理学 2023-08-09 Mahesh Kumar Mulimani , Soling Zimik , Jaya Kumar Alageshan , Rahul Pandit

Diffusion models have achieved remarkable quality in multi-modal MRI synthesis, but their computational cost (hundreds of sampling steps and separate models per modality) limits clinical deployment. We observe that this inefficiency stems…

计算机视觉与模式识别 · 计算机科学 2026-04-24 Yalcin Tur , Mihajlo Stojkovic , Ulas Bagci

Structured illumination microscopy (SIM) achieves superresolution in fluorescence imaging through patterned illumination and computational image reconstruction, yet current methods require bulky, costly modulation optics and high-precision…

光学 · 物理学 2024-04-15 Tamal Roy , Peter T. Brown , Douglas P. Shepherd , Lisa V. Poulikakos

This paper studies a multi-antenna network integrated sensing and communication (ISAC) system, in which a set of multi-antenna base stations (BSs) employ the coordinated transmit beamforming to serve their respectively associated…

信息论 · 计算机科学 2022-11-03 Gaoyuan Cheng , Jie Xu

As a next-generation wireless technology, the in-band full-duplex (IBFD) transmission enables simultaneous transmission and reception of signals over the same frequency, thereby doubling spectral efficiency. Further, a continuous up-scaling…

信息论 · 计算机科学 2024-03-29 Sk Nayemuzzaman , Kumar Vijay Mishra , Jiawei Liu , Mohammad Saquib

Index modulation (IM) is one of the candidate technologies for the upcoming sixth generation (6G) wireless communications networks. In this paper, we propose a space-time-modulated reconfigurable intelligent metasurface (RI-MTS) that is…

应用物理 · 物理学 2020-12-30 John A. Hodge , Kumar Vijay Mishra , Amir I. Zaghloul

This paper considers a discrete-time multiuser multiple-input single-output (MISO) Gaussian broadcast channel~(BC), in which channel state information (CSI) is available at both the transmitter and the receivers. The flexible and explicit…

信息论 · 计算机科学 2016-12-21 Zheng Dong , Yan-Yu Zhang , Jian-Kang Zhang , Xiang-Chuan Gao

This paper investigates the performance of the adaptive matched filtering (AMF) in cluttered environments, particularly when operating with superimposed signals. Since the instantaneous signal-to-clutter-plus-noise ratio (SCNR) is a random…

信息论 · 计算机科学 2025-12-10 Lei Xie , Hengtao He , Yifeng Xiong , Fan Liu , Shi Jin

Dual-functional radar-communication (DFRC) is a promising technology where radar and communication functions operate on the same spectrum and hardware. In this paper, we propose an algorithm for designing constant modulus waveforms for DFRC…

信号处理 · 电气工程与系统科学 2024-04-09 Byunghyun Lee , Anindya Bijoy Das , David J. Love , Christopher G. Brinton , James V. Krogmeier

Low-complexity beamformer design with practical constraints is an attractive research area for hybrid analog/digital systems in mm-wave massive multiple-input multiple-output (MIMO). This paper investigates interference-aware pre-beamformer…

信息论 · 计算机科学 2024-10-28 Murat Bayraktar , Gokhan Muzaffer Guvensen

We describe a fast closed-loop optimization wavefront shaping system able to focus light through dynamic scattering media. A MEMS-based spatial light modulator (SLM), a fast photodetector and FPGA electronics are combined to implement a…

仪器与探测器 · 物理学 2018-02-14 Baptiste Blochet , Laurent Bourdieu , Sylvain Gigan

This letter proposes a targeted-subharmonic-eliminating pulse density modulation (PDM) method for series-series (SS) compensated wireless power transfer (WPT) systems. The subharmonic frequency components which excite current abnormal…

系统与控制 · 电气工程与系统科学 2025-12-01 Songyan Li , Hongchang Li , Haiyue Jiang , Yudong Zhang , Wenjie Chen , Xu Yang

Wavefront shaping (WFS) has emerged as powerful tool to control the propagation of diverse wave phenomena (light, sound, microwaves, ...) in disordered matter for applications including imaging, communication, energy transfer,…

应用物理 · 物理学 2021-05-14 Philipp del Hougne , K. Brahima Yeo , Philippe Besnier , Matthieu Davy