Results 21 to 30 of about 5,174,138 (292)
Semantically Coherent Out-of-Distribution Detection [PDF]
IEEE International Conference on Computer Vision, 2021 Current out-of-distribution (OOD) detection benchmarks are commonly built by defining one dataset as in-distribution (ID) and all others as OOD. However, these benchmarks unfortunately introduce some unwanted and impractical goals, e.g., to perfectly ...
Jingkang Yang +6 more
semanticscholar +1 more source
IEEE Photonics Journal, 2018 Digital coherent receivers employing Alamouti-coding are a promising solution for passive optical networks (PON) with downstream rates of 100 Gb/s/$\lambda$ . To reduce the cost by utilizing high-volume photodiodes designed for 25 Gb/s data-
Md. Saifuddin Faruk +2 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 Detection of underwater coherent interference is necessary as its presence affects the estimation of the desired target. In this work, a method based on high-order particle velocity gradient polarization characteristics is proposed to distinguish the ...
Di Wu, Lanyue Zhang, Jia Wang, Xueru Hu
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Digital self-coherent detection
Optics Express, 2008 We review recent progresses on digital self-coherent detection of differential phase-shift keyed (DPSK) signal using orthogonal differential direct detection followed by high-speed analog-to-digital conversion and digital signal processing (DSP). Techniques such as data-aided multisymbol phase estimation for receiver sensitivity enhancement, unified ...
Xiang, Liu +2 more
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IEEE Photonics Journal, 2017 We demonstrate an ultra-dense wavelength-division-multiplexing (UDWDM) passive optical network (PON) in a spatial-division-multiplexing system utilizing our home-made seven-core multicore fiber (MCF) with a self-homodyne coherent detection (SHCD) scheme.
Chunxiao Xiong +9 more
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Detecting and estimating coherence based on coherence witnesses [PDF]
Physical Review A, 2021 Quantum coherence has wide-ranging applications from quantum thermodynamics to quantum metrology, quantum channel discrimination and even quantum biology. Thus, detecting and quantifying coherence are two fundamental problems in quantum resource theory.
Zhao Ma +4 more
openaire +2 more sources
Advanced DSP for Coherent Optical Fiber Communication
Applied Sciences, 2019 In this paper, we provide an overview of recent progress on advanced digital signal processing (DSP) techniques for high-capacity long-haul coherent optical fiber transmission systems.
Jian Zhao, Yaping Liu, Tianhua Xu
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Performance Analysis of Coherent and Noncoherent Modulation Under I/Q Imbalance Effects
IEEE Access, 2021 In this paper, we investigate the effects of in-phase/quadrature-phase imbalance (IQI) on the performance of different modulation schemes under multipath fading channels.
Bassant Selim +6 more
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Doppler Wind Lidar From UV to NIR: A Review With Case Study Examples
Frontiers in Remote Sensing, 2022 Doppler wind lidar (DWL) uses the optical Doppler effect to measure atmospheric wind speed with high spatial-temporal resolution and long detection range and has been widely applied in scientific research and engineering applications.
Mingjia Shangguan +7 more
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On the Performance of Coherent OFDM Systems in Free-Space Optical Communications
IEEE Photonics Journal, 2015 This paper presents a new model of a coherent orthogonal frequency division multiplexing free space optical communication (OFDM-FSO) system that can be tuned with the virtual local oscillator, under the Gamma-Gamma atmospheric turbulence channel, not ...
Yi Wang, Deli Wang, Jing Ma
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