Publications related to Nyquist rate

Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds

Martin Vetterli, Jayakrishnan Unnikrishnan

Consider the task of sampling and reconstructing a bandlimited spatial field in

\Re^2

using moving sensors that take measurements along their path. It is inexpensive to increase the sampling rate along the paths of the sensors but more expensive to incre ...

Institute of Electrical and Electronics Engineers2013

Optical sinc-shaped Nyquist pulses of exceptional quality

Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Mohammad Amin Shoaie, Mohammad Mehdi Alem Karladani

Sinc-shaped Nyquist pulses possess a rectangular spectrum, enabling data to be encoded in a minimum spectral bandwidth and satisfying by essence the Nyquist criterion of zero inter-symbol interference (ISI). This property makes them very attractive for com ...

2013

Highly tunable method to generate sinc-shaped Nyquist pulses from a rectangular frequency comb

Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Mohammad Amin Shoaie, Mohammad Mehdi Alem Karladani

A method to produce highly-stable optical sinc-shaped pulses is proposed based on the generation of a rectangular-spectrum frequency comb. Nyquist pulses with

OSA2013

Finite Rate of Innovation Based Modeling and Compression of ECG Signals

Gilles Baechler, Nikolaos Freris

Mobile health is gaining increasing importance for society and the quest for new power efficient devices sampling biosignals is becoming critical. We discuss a new scheme called Variable PulseWidth Finite Rate of Innovation (VPW-FRI) to model and compress ...

2013

Approaching the Rate-Distortion Limit by spatial Coupling with Belief Propagation and Decimation

Nicolas Macris, Vahid Aref, Marc Vuffray

We investigate an encoding scheme for lossy compression based on spatially coupled Low-Density Generator-Matrix codes. The degree distributions are regular, or are Poisson on the code-bit side and check-regular which allows use for any compression rate. Th ...

2013

Transfer Kinetics of Polar Organic Compounds over Polyethersulfone Membranes in the Passive Samplers Pocis and Chemcatcher

Juliane Hollender

Passive samplers for polar organic compounds often use a polyethersulfone (PES) membrane to retain the particulate sorbent material (e.g., in a POCIS; polar organic chemical integrative sampler) or to reduce the sampling rate and thus extend the kinetic re ...

2012

Super-resolution from unregistered aliased images with unknown scalings and shifts

Martin Vetterli, Feng Yang

We consider the problem of super-resolution from unregistered aliased images with unknown spatial scaling factors and shifts. Due to the limitation of pixel size in the image sensor, the sampling rate for each image is lower than the Nyquist rate of the sc ...

2012

On the Bandwidth of the Plenoptic Function

Martin Vetterli, Minh Do, Davy Marchand-Maillet

The plenoptic function (POF) provides a powerful conceptual tool for describing a number of problems in image/video processing, vision, and graphics. For example, image based-rendering can be seen as sampling and interpolation of the POF. In such applicati ...

Institute of Electrical and Electronics Engineers2012

Sensing ECG signals with variable pulse width finite rate of innovation

Gilles Baechler

Mobile health is gradually taking more importance in our society and the need of new power efficient devices acquiring biosignals for long periods of time is becoming substantial. In this thesis, we study the power reduction we could achieve on ECG sensing ...

2012

Lossy source coding via spatially coupled LDGM ensembles

Rüdiger Urbanke, Nicolas Macris, Vahid Aref, Marc Vuffray

We study a new encoding scheme for lossy source compression based on spatially coupled low-density generatormatrix codes. We develop a belief-propagation guided-decimation algorithm, and show that this algorithm allows to approach the optimal distortion of ...

Ieee2012

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Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds

Optical sinc-shaped Nyquist pulses of exceptional quality

Highly tunable method to generate sinc-shaped Nyquist pulses from a rectangular frequency comb

Finite Rate of Innovation Based Modeling and Compression of ECG Signals

Approaching the Rate-Distortion Limit by spatial Coupling with Belief Propagation and Decimation

Transfer Kinetics of Polar Organic Compounds over Polyethersulfone Membranes in the Passive Samplers Pocis and Chemcatcher

Super-resolution from unregistered aliased images with unknown scalings and shifts

On the Bandwidth of the Plenoptic Function

Sensing ECG signals with variable pulse width finite rate of innovation

Lossy source coding via spatially coupled LDGM ensembles

Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds

Highly tunable method to generate sinc-shaped Nyquist pulses from a rectangular frequency comb

Finite Rate of Innovation Based Modeling and Compression of ECG Signals

Approaching the Rate-Distortion Limit by spatial Coupling with Belief Propagation and Decimation

Super-resolution from unregistered aliased images with unknown scalings and shifts

Transfer Kinetics of Polar Organic Compounds over Polyethersulfone Membranes in the Passive Samplers Pocis and Chemcatcher

On the Bandwidth of the Plenoptic Function

Sensing ECG signals with variable pulse width finite rate of innovation

Lossy source coding via spatially coupled LDGM ensembles

Optical sinc-shaped Nyquist pulses of exceptional quality