Results 91 to 100 of about 18,013 (228)
Capacity of a communication channel with quadrature phase-shift keying and phase quantization
Учёные записки Казанского университета: Серия Физико-математические наукиThe influence of the number of phase quantization levels L on the capacity CM,L of a communication channel with additive white Gaussian noise (AWGN) was studied in a communication system using QPSK (4-PSK).
Yu. A. Brychkov, N. V. Savischenko
doaj +1 more source
Polymer Composites, EarlyView.Schematic representation of hemp‐, glass‐, and carbon‐based laminated composite curved beams, including different stacking sequences and their vibration response. ABSTRACT In recent years, increasing environmental awareness has stimulated growing interest in natural fiber‐reinforced composites (NFRCs) due to their eco‐friendly composition ...
Aykut Çetin, Hasan Kurtaran
wiley +1 more source
Wavelength conversion in a highly nonlinear chalcogenide microstructured fiber
, 2012 International audienceWe report on all-optical wavelength conversion of a 56 Gb/s differential quadrature phase shift keying signal and a 42.7 Gb/s on-off keying signal.
David Méchin +11 more
core +3 more sources
A Novel Hybrid Cuckoo Search- Extreme Learning Machine Approach for Modulation Classification
IEEE Access, 2019 This paper presents a novel hybrid extreme learning machine (ELM) with cuckoo search algorithm (CSA) for the classification purposes of the digitally modulated signals, such as phase shift keying (PSK), frequency shift keying (FSK), and quadrature ...
Syed Ihtesham Hussain Shah +4 more
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The Age and Origin of Block Deposits in the Victorian Alps, Australia
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows +4 more
wiley +1 more source
Modulation of North Atlantic atmospheric rivers by the Gulf Stream
Quarterly Journal of the Royal Meteorological Society, EarlyView.Gulf Stream ocean variability plays a key role in modulating atmospheric river (AR) activity over the North Atlantic during winter and spring at monthly time‐scales. Increased ocean heat transport and mesoscale activity in the Gulf Stream are linked to northward shifts in ARs, while stronger surface heat fluxes drive ARs southward.
Ferran Lopez‐Marti +3 more
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram +3 more
wiley +1 more source
Estimation of BER from Error Vector Magnitude for Optical Coherent Systems
Photonics, 2016 This paper presents the estimation of bit error ratio (BER) from error vector magnitude (EVM) for M-ary quadrature amplitude modulation (QAM) formats in optical coherent systems employing carrier phase recovery with differential decoding to compensate ...
Irshaad Fatadin
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High Voltage, EarlyView.ABSTRACT Abnormal heating due to decay‐like degradation in composite insulators is influenced by environmental moisture, but the relationship between the internal degradation status of the core rods and their electrical properties under varying humidity conditions remains poorly understood. In this work, the decay‐like degraded fibre‐reinforced polymer
Shuqi Liu +8 more
wiley +1 more source
Fully signed quadrature space shift keying MIMO modulation
Ain Shams Engineering JournalA novel multiple-input multiple-output (MIMO) space shift keying (SSK) modulation scheme, termed fully signed quadrature space shift keying (FSQ-SSK), is proposed in this paper.
Hany S. Hussein +4 more
doaj +1 more source