Results 11 to 20 of about 1,286,132 (244)

Study on Amplitude Modulation Principle of Chaotic System

open access: yesComplexity, 2020
Exploring the amplitude modulation phenomenon of chaotic signal has become a subject of great concern in recent years. This paper mainly concentrates on the preliminary study on amplitude modulation principle of a chaotic system.
Jian-Rong Du   +4 more
doaj   +1 more source

The Effect of Thermal Modulation on Double Diffusive Convection in the Presence of Applied Magnetic Field and Internal Heat Source

open access: yesInternational Journal of Applied Mechanics and Engineering, 2021
The investigation of thermal modulation on double-diffusive stationary convection in the presence of an applied magnetic field and internal heating is carried out.
S.H. Manjula, P. Suresh, M.G. Rao
doaj   +1 more source

Method of calibrating modulation meter MI 2305

open access: yesVojnotehnički Glasnik, 2000
In this article an original way of calibrating the MI 2305 modulation meter is described. AM traceability is achieved using tree secondary etalons. FM traceability calibrating is achieved by using the Bessel zero method.
Milovan Unković
doaj   +1 more source

Corrected Long-Term Time-Average Sound Level of Amplitude-Modulated Wind Turbine Noise [PDF]

open access: yesArchives of Acoustics, 2023
Amplitude modulated noise from a single wind turbine is considered. The time-varying modulation depth D_m and the short time-average sound level L_Aeq,τ (with τ = 20 s) are measured at the reference distance d_*.
Rufin Makarewicz, Maciej Buszkiewicz
doaj   +1 more source

Amplify–Quantize–Forward Relay Channel With Quadrature Amplitude Modulation

open access: yesIEEE Access, 2022
This paper considers an amplify–quantize–forward (AQF) relay channel with $M$ -ary quadrature amplitude modulation, where the relay implements a uniform quantization for the amplified received signal and forwards it to the destination. Two
Xianglan Jin
doaj   +1 more source

Autodyne Sensor Signals with Amplitude-Frequency Modulation of Radiation

open access: yesSensors, 2020
A mathematical model of an autodyne oscillator with a combined amplitude-frequency modulation, which is under the influence of its own radiation reflected from the target, is developed.
Vladislav Noskov   +4 more
doaj   +1 more source

Adaptive minimum symbol error rate beamforming assisted detection for quadrature amplitude modulation

open access: yes, 2008
—We consider beamforming assisted detection for multiple antenna aided multiuser systems that employ the bandwidth efficient quadrature amplitude modulation scheme.
Chen, Sheng   +3 more
core   +1 more source

Temporal modulation transfer functions in the European Starling (Sturnus vulgaris): II. Responses of auditory-nerve fibres [PDF]

open access: yes, 1995
The temporal resolution of cochlear-nerve fibres in the European starling was determined with sinusoidally amplitude-modulated noise stimuli similar to those previously used in a psychoacoustic study in this species (Klump and Okanoya, 1991).
Klump, Georg M.   +3 more
core   +1 more source

Coherent amplitude modulation of electron-beam-driven Langmuir waves [PDF]

open access: yesAnnales Geophysicae, 2013
A linear approach to the phenomenon of irregular amplitude modulation of beam-driven Langmuir waves, developed in a previous paper, is extended to explain periodic modulation as well.
K. Baumgärtel
doaj   +1 more source

Amplitude Modulation to Phase Modulation Conversion in Photonic Bandpass Sampling Link

open access: yesIEEE Photonics Journal, 2021
The photonic bandpass sampling has been proved to be potential in multi-carrier communication, frequency-agile coherent radar, compressive sensing, etc.
Shanhong Guan   +4 more
doaj   +1 more source

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