Results 11 to 20 of about 5,020,295 (161)
Odes’kyi Politechnichnyi Universytet PratsiThe paper presents the results of the research, which outcome in the development of a theoretical justification for a new type of modulation – Hartley amplitude-phase modulation. This type of modulation has an additional carrier that is orthogonal to the known amplitude-phase modulation. Moreover, the in-phase and quadrature
Олександр Борисович Коханов
doaj +10 more sources
Journal of Lightwave Technology, 2010 We present a novel optical orthogonal frequency division multiplexing (O-OFDM) scheme, suitable for intensity-modulated direct-detection systems, where the modulation/demodulation processing takes advantage of the fast Hartley transform algorithm. Due to
Gabriel Junyent Giralt, Raúl Muñoz
exaly +2 more sources
Modulation techniques for data superposition on amplitude-modulated signals [PDF]
, 1983 Double-sideband amplitude-modulation is widely used because of its simplicity in transmission and reception, but in a number of applications the inclusion of a data channel has become an additional requirement.
Al-Jalili, Yazan Othman Ahmad
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Quantifying Cortical Maturational Aspects During Different Vigilance States in Preterm Infants by Advanced EEG Analysis. [PDF]
J Sleep ResABSTRACT Preterm birth is a significant risk factor for atypical neurodevelopment, yet early electrophysiological markers of brain maturation are still lacking. Non‐invasive electroencephalographic (EEG) monitoring of cortical maturation in these patients holds promise as a tool for neurodevelopmental prediction.
Burlando G +9 more
europepmc +2 more sources
Dynamic Updating of Cognitive Maps via Traces of Experience in the Subiculum. [PDF]
HippocampusABSTRACT In the classical view of hippocampal function, the subiculum is assigned the role of the output layer. In spatial paradigms, some subiculum neurons manifest as so‐called boundary vector cells (BVCs), firing in response to boundaries at specific allocentric directions and distances.
Wang F, Bicanski A.
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Hippocampal-Prelimbic Coupling During Context-Dependent Extinction Retrieval in Rats. [PDF]
HippocampusABSTRACT After fear conditioning, repeated presentation of the conditioned stimulus (CS) alone produces a context‐dependent extinction of learned fear. The hippocampus has a critical role in this process, but the mechanism by which contextual information encoded by the hippocampus leads to fear suppression is unknown.
Mourão FAG, Totty MS, Tuna T, Maren S.
europepmc +2 more sources
Design of Tunable Broadband Graphene-Based Metasurface with Amplitude-Phase Modulation
Materials, 2023 Due to the growing scarcity of spectrum resources in the low-frequency band, the requirement of beam-reconfigurable antennas in the millimeter wave band is urgent.
Huixia Jiang +4 more
semanticscholar +1 more source
Amplitude-phase modulation metasurface hologram with inverse angular spectrum diffraction theory
Journal of Physics D: Applied Physics, 2022 Designed metasurfaces, composed of a two-dimensional array of meta-atoms, provide an alternative approach to achieving efficient electromagnetic wave manipulation.
Deer Su +6 more
semanticscholar +1 more source
Performance Evaluation of NRZ-OOK and Carrier-Less Amplitude Phase Modulation in Li-Fi Environment
Journal of Physics, Conference Series, 2022 Light Fidelity (Li-Fi) is a wireless technology that utilizes light emitting diodes to convey data. Li-Fi has emerged as a promising alternative to radio frequency communication technology in recent years.
A. Zaiton +4 more
semanticscholar +1 more source
Performance evaluation of carrier-less amplitude phase modulation scheme for indoor visible light communication system [PDF]
, 2023 In the field of visible light communication (VLC) systems, carrier-less amplitude and phase modulation have lately been explored as an alternative to various modulation techniques, especially optical orthogonal-frequency-division-multiplexing. This study
Abdul Mutalip, Zaiton +2 more
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