Pulse-density modulation

Applied sciences
Information engineering
Traitement du signal
Quantification (signal)

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Publications associées (28)

Increasing robustness of bipolar pulse coding in Brillouin distributed fiber sensors

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang

The robustness of bipolar pulse coding against pump depletion issues in Brillouin distributed fiber sensors is theoretically and experimentally investigated. The presented analysis points out that the effectiveness of bipolar coding in Brillouin sensing ca ...

Optical Society of America2016

A Time-Based, Digitally Intensive Circuit and System Architecture for Wireless Neural Recording with High Dynamic Range

Alexandre Schmid, Wen-Yang Hsu, Chen Cao

A new type of wireless neural recording front-end with PWM modulation and VCO-based ADC is proposed. The target signal is first encoded into binary levels with varying pulse width by PWM modulation, which intrinsically has much higher dynamic range compare ...

2016

A low-voltage CMOS-compatible time-domain photodetector, device & front end electronics

Denis Sallin

During the last decades, the usage of silicon photodetectors, both as stand-alone sensor or integrated in arrays, grew tremendously. They are now found in almost any application and any market range, from leisure products to high-end scientific apparatuses ...

EPFL2016

Novel Concepts and Recent Progress in Distributed Optical Fiber Sensing

Luc Thévenaz, Marcelo Alfonso Soto Hernandez

Recent techniques open new perspectives for distributed fiber sensing. Pulse coding and multi-dimensional denoising methods result in a >10 dB noise reduction with minor modifications of the experimental layout. ...

OSA2016

Generation of 1.5-octave intense infrared pulses by nonlinear interactions in DAST crystal

Christoph Peter Hauri

Infrared pulses with large spectral width extending from 1.2 to 3.4 μm are generated in the organic crystal DAST (4-N, N-dimethylamino-4′-N′-methylstilbazolium tosylate). The input pulse has a central wavelength of 1.5 μm and 65 fs duration. With 2.8 mJ in ...

Iop Publishing Ltd2015

A Relative Imaging CMOS Image Sensor for High Dynamic Range and High Frame-Rate Machine Vision Imaging Applications

Alexandre Schmid, Yusuf Leblebici, Vladan Popovic, Nikola Katic, Radisav Cojbasic

This paper proposes an unconventional image acquisition scheme for machine vision applications, based on detecting ratios of illumination (pixel) intensities. Detecting relative ratios enables capturing the scene features and patterns almost independently ...

Institute of Electrical and Electronics Engineers2015

Discriminant Brain Connectivity Patterns of Performance Monitoring at Average and Single-Trial Levels

José del Rocio Millán Ruiz, Ricardo Andres Chavarriaga Lozano, Huaijian Zhang

Electrophysiological and neuroimaging evidence suggest the existence of common mechanisms for monitoring erroneous events, independent of the source of errors. Previous works have described modulations of theta activity in the medial frontal cortex elicite ...

Elsevier2015

Suprathermal electron studies in Tokamak plasmas by means of diagnostic measurements and modeling

Josef Kamleitner

To achieve reactor-relevant conditions in a tokamak plasma, auxiliary heating systems are required and can be realized by waves injected in the plasma that heat ions or electrons under certain conditions. Electron cyclotron resonant heating (ECRH) is a ver ...

EPFL2015

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