Results 1 to 10 of about 60,818 (165)
Laser-sound reproduction by pulse amplitude modulation audio streams [PDF]
Scientific ReportsRecently, the possibility to reproduce complex continuous acoustic signals via pulsed laser-plasma sound sources was demonstrated. This was achieved by optoacoustic transduction of dense laser pulse trains, modulated via single- or multi-bit Sigma–Delta,
Konstantinos Kaleris +3 more
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Proposed Methodology for the Annoyance Penalty of Amplitude Modulated Wind Turbine Noise [PDF]
Archives of Acoustics, 2022 Amplitude modulation increases the annoyance caused by wind turbine noise. One gets the improved annoyance when a penalty is added to the measured or calculated time-average sound level. The amplitude modulated wind turbine noise consists of pulses. Each
Rufin Makarewicz
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Guangtongxin yanjiu, 2021 Aiming at the demand of high spectrum efficiency and low bit error rate of Wireless Optical Communication (WOC) technology, a joint modulation method of Pulse Amplitude Modulation (PAM) and Pulse Position Modulation (PPM) is proposed.
Le-kun DENG +3 more
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e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2022 Visible-Light Communications (VLC) is a new wireless communication technology, which has attracted particular attention as a promising solution for very high speed 5G, and 6G wireless networks in indoor environments.
Mohamed El Jbari, Mohamed Moussaoui
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Spectral characteristics of DDPM streams and their application to all‐digital amplitude modulation
Electronics Letters, 2021 A new closed‐form expression of the spectral coefficients of the digital streams obtained by dyadic digital pulse modulation is presented and validated in this letter.
P. S. Crovetti
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Pulse Radar Imaging Method in an Anechoic Chamber Based on an Amplitude Modulation Design
Remote Sensing, 2022 The application of a pulse radar in anechoic chamber imaging is a new way to obtain the electromagnetic characteristics of targets. However, the limited size of an anechoic chamber causes the coupling between the transmitted signal and echo so the target
Ailun Xie +3 more
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Performance analysis of hybrid MPAPM technique for deep‐space optical communications
IET Communications, 2021 A hybrid multiple pulse amplitude and position modulation (H‐MPAPM) scheme based on gradual multi‐pulse pulse‐position modulation (G‐MPPM) and multi‐level pulse amplitude modulation (M‐PAM) schemes is proposed for deep‐space optical communication.
Sadiq Idris +2 more
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Photonics, 2021 In this paper we present an experimental analysis of several modulation formats (pulse amplitude modulation (PAM-2), quaternary pulse amplitude modulation (PAM-4) and electrical duobinary (EDB)) for passive optical network (PON) applications at 25 Gbps ...
Haoyi Wang +3 more
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Flexible Quadrature Spatial Pulse Amplitude Modulation for VLC Systems
IEEE Systems Journal, 2022 Quadrature-spatial modulation (QSM) offers high spectral efficiency (SE) without interchannel interference for both radio frequency and visible light communication (VLC) systems. In this article, a new QSM scheme called flexible quadrature spatial pulse amplitude modulation (FQSPAM) is proposed for VLC systems.
Yasin Celik +2 more
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Mathematical model of speech signal leakage channels during discrete-quantified conversion
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2020 The purpose of the article is to estimate the leakage channel of a discrete-quantized speech signal with amplitude-pulse modulation. Discrete-quantized analog-to-digital conversion of signals in the article is considered by the example of pulse-amplitude
V. K. Zheleznjak +3 more
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