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This paper proposes a novel spread spectrum and sub-carrier index modulation (SS-SIM) scheme, which is integrated to orthogonal frequency division multiplexing (OFDM) framework to enhance the diversity over the conventional IM schemes.…

Reconfigurable intelligent surface (RIS) enhances signal quality by adjusting the phase of electromagnetic waves in wireless communication. Spatial modulation (SM), a prominent index modulation (IM) technique, provides high spectral…

信号处理 · 电气工程与系统科学 2023-11-23 Burak Ahmet Ozden , Erdogan Aydin

Semantic Change Detection (SCD) refers to the task of simultaneously extracting the changed areas and the semantic categories (before and after the changes) in Remote Sensing Images (RSIs). This is more meaningful than Binary Change…

计算机视觉与模式识别 · 计算机科学 2024-02-23 Lei Ding , Jing Zhang , Kai Zhang , Haitao Guo , Bing Liu , Lorenzo Bruzzone

We propose a new detection method for ultrasound-modulated optical tomography that allows us to perform parallel speckle detection with optimum shot-noise sensitivity, using a CCD camera. Moreover, we show that making use of a spatial…

光学 · 物理学 2008-12-18 Michel Gross , Philippe Goy , Mohamed Al-Koussa

Infrared small target detection (IRSTD) has recently benefitted greatly from U-shaped neural models. However, largely overlooking effective global information modeling, existing techniques struggle when the target has high similarities with…

计算机视觉与模式识别 · 计算机科学 2024-05-01 Shuai Yuan , Hanlin Qin , Xiang Yan , Naveed AKhtar , Ajmal Mian

In this paper, deep learning (DL)-aided data detection of spatial multiplexing (SMX) multiple-input multiple-output (MIMO) transmission with index modulation (IM) (Deep-SMX-IM) has been proposed. Deep-SMX-IM has been constructed by…

信号处理 · 电气工程与系统科学 2022-02-08 Merve Turhan , Ersin Ozturk , Hakan Ali Cirpan

The spectral numerical mode-matching (SNMM) method is developed to simulate the 3D layered multi-region structures. The SNMM method is a semi-analytical solver having the properties of dimensionality reduction to reduce computational costs;…

光学 · 物理学 2019-07-10 Jie Liu , Na Liu , Qing Huo Liu

Convolutional neural networks (CNNs) have been widely used in various vision tasks, e.g. image classification, semantic segmentation, etc. Unfortunately, standard 2D CNNs are not well suited for spherical signals such as panorama images or…

计算机视觉与模式识别 · 计算机科学 2022-09-05 Yuqi Liu , Yin Wang , Haikuan Du , Shen Cai

Terahertz (THz) extremely large-scale MIMO (XL-MIMO) is considered a key enabling technology for 6G and beyond due to its advantages such as wide bandwidth and high beam gain. As the frequency and array size increase, users are more likely…

信号处理 · 电气工程与系统科学 2025-05-15 Huixin Xu , Jianhua Zhang , Pan Tang , Hongbo Xing , Chong Han , Lei Tian , Qixing Wang , Guangyi Liu

Maximum eigenvalue detection (MED) is an important application of random matrix theory in spectrum sensing and signal detection. However, in small signal-to-noise ratio environment, the maximum eigenvalue of the representative signal is at…

信号处理 · 电气工程与系统科学 2018-03-28 Lin Zheng , Robert C. Qiu , Qing Feng , Xuebin Li

Time-resolved scanning near-field optical microscopy (tr-SNOM) enables the measurement of the dynamic optical response of functional surfaces beyond the diffraction limit. Experimental challenges are imposed both by the use of a pulsed…

光学 · 物理学 2026-04-16 Philipp Schwendke , Julia Stähler , Samuel Palato

Existing anomaly detection methods for Wireless Sensor Networks (WSNs) generally suffer from insufficient extraction of spatio-temporal correlation features, reliance on either timedomain or frequencydomain information alone, and high…

网络与互联网体系结构 · 计算机科学 2026-04-28 Miao Ye , Ziheng Wang , Qiuxiang Jiang , Xingsi Xue , Wenxi Liu , Yu Ning , Cheng Zhu

Radio map estimation (RME) involves spatial interpolation of radio measurements to predict metrics such as the received signal strength at locations where no measurements were collected. The most popular estimators nowadays project the…

最优化与控制 · 数学 2024-11-08 Pham Q. Viet , Daniel Romero

Light-sheet microscopes must compromise between field of view, optical sectioning, resolution, and detection efficiency. High-numerical-aperture (NA) detection objective lenses provide high resolution but their narrow depth of field fails…

In diffusion MRI (dMRI), a good sampling scheme is important for efficient acquisition and robust reconstruction. Diffusion weighted signal is normally acquired on single or multiple shells in q-space. Signal samples are typically…

医学物理 · 物理学 2017-09-26 Jian Cheng , Dinggang Shen , Pew-Thian Yap , Peter J. Basser

Change detection from synthetic aperture radar (SAR) imagery is a critical yet challenging task. Existing methods mainly focus on feature extraction in spatial domain, and little attention has been paid to frequency domain. Furthermore, in…

计算机视觉与模式识别 · 计算机科学 2022-02-16 Xiaofan Qu , Feng Gao , Junyu Dong , Qian Du , Heng-Chao Li

We propose a Spiking Neural Network (SNN)-based explicit numerical scheme for long time integration of time-dependent Ordinary and Partial Differential Equations (ODEs, PDEs). The core element of the method is a SNN, trained to use…

数值分析 · 数学 2022-11-21 Qian Zhang , Adar Kahana , George Em Karniadakis , Panos Stinis

In this paper we propose a new design criterion and a new class of unitary signal constellations for differential space-time modulation for multiple-antenna systems over Rayleigh flat-fading channels with unknown fading coefficients.…

信息论 · 计算机科学 2008-05-12 Xinjia Chen , Kemin Zhou , Jorge Aravena

In remote sensing, most segmentation networks adopt the UNet architecture, often incorporating modules such as Transformers or Mamba to enhance global-local feature interactions within decoder stages. However, these enhancements typically…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Chengqian Dai , Yonghong Guo , Hongzhao Xiang , Yigui Luo

Signal detection in large multiple-input multiple-output (large-MIMO) systems presents greater challenges compared to conventional massive-MIMO for two primary reasons. First, large-MIMO systems lack favorable propagation conditions as they…

信息论 · 计算机科学 2023-08-23 Jiuyu Liu , Yi Ma , Rahim Tafazolli