Articles with "position modulation" as a keyword



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Influence mechanism of repetition frequency on pulse position modulation in deep space laser communication

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Published in 2018 at "Cluster Computing"

DOI: 10.1007/s10586-018-2313-x

Abstract: Taking the deep space laser communication as the application background, based on multi-pulse position modulation and differential pulse position modulation, a new differential multi-pulse position modulation (DMPPM) mode is proposed. The DMPPM theory model is… read more here.

Keywords: pulse position; modulation; laser; position modulation ... See more keywords
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Passive measurement-device-independent quantum key distribution with orbital angular momentum and pulse position modulation

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Published in 2018 at "Optoelectronics Letters"

DOI: 10.1007/s11801-018-7232-9

Abstract: Based on the orbital angular momentum and pulse position modulation, we present a novel passive measurement-device-independent quantum key distribution (MDI-QKD) scheme with the two-mode source. Combining with the tight bounds of the yield and error… read more here.

Keywords: pulse position; modulation; position modulation; angular momentum ... See more keywords
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Atomic resolution HOLZ-STEM imaging of atom position modulation in oxide heterostructures.

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Published in 2021 at "Ultramicroscopy"

DOI: 10.1016/j.ultramic.2021.113296

Abstract: It is shown that higher order Laue zone (HOLZ) rings in high energy electron diffraction are specific to individual columns of atoms, and show different strengths, structure and radii for different atom columns along the… read more here.

Keywords: position modulation; holz; resolution holz; stem ... See more keywords
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Performance of Multipulse Pulse-Position Modulation in NLOS Ultraviolet Communications

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3236613

Abstract: The performance of multipulse pulse-position modulation (MPPM) in non-line-of-sight (NLOS) ultraviolet communications (UVC) with output signals of detectors following Poisson distribution and Poisson-triggered Gaussian (PTG) distribution has been investigated. Specifically, the probabilities of a given… read more here.

Keywords: position modulation; ultraviolet communications; pulse position; multipulse pulse ... See more keywords
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Optical nanotopography of fluorescent surfaces by axial position modulation.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.451896

Abstract: We present an optical method that combines confocal microscopy with position modulation to perform axial tracking and topographic imaging of fluorescent surfaces. Using a remote focusing system, the confocal observation volume is oscillated in the… read more here.

Keywords: nanotopography fluorescent; fluorescent surfaces; position modulation; modulation ... See more keywords
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Likelihood based synchronization algorithms in optical pulse position modulation systems with photon-counting receivers.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.467571

Abstract: Deep space optical communication (DSOC) is becoming a hot topic. Pulse position modulation (PPM) is an effective tool to realize DSOC benefiting from the feature of high sensitivity. In this paper, we analyze 2 × 1 optical… read more here.

Keywords: systems photon; position modulation; proposed algorithms; synchronization algorithms ... See more keywords