Results 11 to 20 of about 606,927 (312)

Signal Automatic Modulation Classification and Recognition in View of Deep Learning

open access: yesIEEE Access, 2023
With the advancement of 5G technology, wireless communication resources such as channels and spectrum become scarce. This necessitates ensuring the efficiency and security of signal modulation and demodulation, which imposes higher requirements for ...
Tianpei Xu, Ying Ma
doaj   +3 more sources

Modulator-free quadrature amplitude modulation signal synthesis [PDF]

open access: yesNature Communications, 2014
AbstractThe ability to generate high-speed on–off-keyed telecommunication signals by directly modulating a semiconductor laser’s drive current was one of the most exciting prospective applications of the nascent field of laser technology throughout the 1960s.
Liu, Zhixin   +6 more
openaire   +8 more sources

A Deep Echo State Network-Based Novel Signal Processing Approach for Underwater Wireless Optical Communication System with PAM and OFDM Signals

open access: yesPhotonics, 2023
Underwater wireless optical communication (UWOC) plays key role in the underwater wireless sensor networks (UWSNs), which have been widely employed for both scientific and commercial applications.
Kexin Wang   +4 more
doaj   +1 more source

The Estimation Method of Sensing Parameters Based on OTFS

open access: yesIEEE Access, 2023
In an integrated sensing and communication (ISAC) system, improving the accuracy of delay and Doppler shift sensing parameter estimation is a critical task that sustains the performance of the communication system. To tackle this task, we introduce a two-
Zhiling Tang   +3 more
doaj   +1 more source

Doppler Measurement of Modulated Light for High Speed Vehicles

open access: yesSensors, 2022
Technical details associated with a novel relative motion sensor system are elaborated in the paper. By utilizing the Doppler effect, the optical sensor system estimates the relative motion rates between the sensor and the moving object equipped with ...
Kookjin Sung, Manoranjan Majji
doaj   +1 more source

Intracellular signal modulation by nanomaterials. [PDF]

open access: yesAdv Exp Med Biol, 2014
A thorough understanding of the interactions of nanomaterials with biological systems and the resulting activation of signal transduction pathways is essential for the development of safe and consumer friendly nanotechnology. Here we present an overview of signaling pathways induced by nanomaterial exposures and describe the possible correlation of ...
Hussain S   +5 more
europepmc   +4 more sources

PFMD: A Power Frequency Magnetic Anomaly Signal Detection Scheme Based on Synchrosqueezed Wavelet Transform

open access: yesApplied Sciences, 2022
Magnetic anomaly signal detection (MASD) is a passive method for the detection of visually obscured ferromagnetic objects. This paper proposes a new method for MASD based on the ambient field of power frequency magnetic (power transmission line system ...
Bin Tian   +5 more
doaj   +1 more source

Performance Evaluation of Demodulation Methods: a Combinatorial Approach [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2001
This paper provides a combinatorial approach for analyzing the performance of demodulation methods used in GSM. We also show how to obtain combinatorially a nice specialization of an important performance evaluation formula, using its connection with a ...
Daniel Krob, Ekaterina A. Vassilieva
doaj   +1 more source

Electromagnetic Signal Modulation by Chromatic Dispersion in Phase Gradient Metasurface

open access: yesIEEE Access, 2022
Chromatic dispersion in phase gradient metasurface and its impact on the scattered electromagnetic signals are studied in this paper. Due to its intrinsic material dispersion and special spatial arrangement of unit cells, phase gradient metasurfaces ...
Yueyu Meng   +6 more
doaj   +1 more source

Cannabinoids in the Modulation of Oxidative Signaling

open access: yesInternational Journal of Molecular Sciences, 2023
Cannabis sativa-derived compounds, such as delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD), and components of the endocannabinoids system, such as N-arachidonoylethanolamide (anandamide, AEA) and 2-arachidonoylglycerol (2-AG), are extensively studied to investigate their numerous biological effects, including powerful antioxidant effects ...
Cristina Pagano   +6 more
openaire   +2 more sources

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