Results 251 to 260 of about 718,685 (289)

Optical Pulse Position Modulation with Multiple Positions per Pulsewidth

IEEE Transactions on Communications, 1977
This concise paper determines the required laser power to achieve a given probability of bit error using a pulse-interval modulation (PIM) (discrete pulse position modulation) system with resolution much smaller than a laser pulsewidth. An approximation to the first crossing density for a threshold detector operating on a filtered Poisson process is ...
Gary M. Lee, George W. Schroeder
openaire   +2 more sources

A Pulse Position Modulation Analog Computer

IEEE Transactions on Electronic Computers, 1960
An important field of application for computers is in real-time systems simulation. This requires the generation of non-linear functions, obtaining the sums and products of these functions and solving systems of nonlinear differential equations. A new type of analog computer suitable for systems simulation is described which combines the desirable ...
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Pulse position modulation

2002
Pulse position modulation (PPM) is an historic modulation format which is finding new interest, especially in infrared optical communications. In this paper we introduce PPM in the more general context of pulse modulations. We introduce both analog PPM, for the transmission of continuous time messages, and digital PPM, for data transmission.
CARIOLARO, GIANFRANCO, ERSEGHE, TOMASO
openaire   +1 more source

Exercise as a Positive Modulator of Brain Function

Molecular Neurobiology, 2017
Various forms of exercise have been shown to prevent, restore, or ameliorate a variety of brain disorders including dementias, Parkinson's disease, chronic stress, thyroid disorders, and sleep deprivation, some of which are discussed here. In this review, the effects on brain function of various forms of exercise and exercise mimetics in humans and ...
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Positive and negative modulation of nicotinic receptors

2010
Nicotinic acetylcholine receptors (AChRs) are one of the best characterized ion channels from the Cys-loop receptor superfamily. The study of acetylcholine binding proteins and prokaryotic ion channels from different species has been paramount for the understanding of the structure-function relationship of the Cys-loop receptor superfamily.
openaire   +2 more sources

Multi-carrier-Based Positional Modulation Design

Lecture Notes in Electrical Engineering, 2021
Xiaonan Zhao, Bo Zhang, Cheng Wang
exaly  

Assessment of positional error and hole quality during vibration-based drilling of aerospace alloy

Journal of Mechanical Science and Technology, 2021
Harpreet Singh, Malkeet Singh, Sahil Dhiman   +2 more
exaly  

Positional Modulation Design with Discrete Phase Values for Metasurface Elements

2022
Xiaonan Zhao, Zhikun Su, Taekon Kim
exaly  

Central positional nystagmus: an update

Journal of Neurology, 2021
João Lemos, Michael Strupp
exaly  

Reducing the positional modulation of NbO6-octahedra in SrxBa1–xNb2O6 by increasing the barium content: A single crystal neutron diffraction study at ambient temperature for x = 0.61 and x = 0.34

Zeitschrift Fur Kristallographie - Crystalline Materials, 2008
Jurg Schefer, Václav Petříček, Dominik Schaniel   +2 more
exaly