Concept

Normalized frequency (signal processing)

Related publications (43)

Current-mode Memory Cell with Power Down Phase for Discrete Time Analog Iterative Decoders

A low power, current-mode memory element for analog discrete time iterative decoders is proposed. In the circuit a high-speed power-down mechanism has been implemented that enables a significant increase of the operation speed without increasing the power ...

2008

Flexible Ultra Low Power Successive Approximation Analog-to-Digital Converter with Asynchronous Clock Generator

Rafal Tomasz Dlugosz

An ultra low power 8-bit current-mode successive approximation (SAR) analog-to-digital (ADC) converter for Wireless Sensor Network (WSN) applications is presented. The proposed ADC contains a new asynchronous clock generator, which works only during data p ...

2007

Hybrid continuous-discrete-time multi-bit delta-sigma A/D converters with auto-ranging algorithm

Sergio Pesenti

In wireless portable applications, a large part of the signal processing is performed in the digital domain. Digital circuits show many advantages. The power consumption and fabrication costs are low even for high levels of complexity. A well established a ...

EPFL2007

An Orientation Measuring System Suitable for Routine Uses Made by the Fusion of a 3D Gyroscope and a Magnetic Tracker

Kamiar Aminian, Julien Favre, Julien Chardonnens

Many studies have shown the efficacy of orientation and three-dimensional joint angle measurement for patient evaluation or rehabilitation purposes. But currently, the use of these systems for routine practice is questionable. The commercially available de ...

2007

An orientation measuring system suitable for routine uses made by the fusion of a 3D gyroscope and a magnetic tracker

Julien Favre

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2007

Super-Resolution from Unregistered and Totally Aliased Signals Using Subspace Methods

Martin Vetterli, Luciano Sbaiz, Patrick Vandewalle

In many applications, the sampling frequency is limited by the physical characteristics of the components: the pixel pitch, the rate of the A/D converter, etc. A low-pass filter is then often applied before the sampling operation to avoid aliasing. However ...

Institute of Electrical and Electronics Engineers2007

Aliasing is Good for You: Joint Registration and Reconstruction for Super-Resolution

Martin Vetterli, Luciano Sbaiz, Patrick Vandewalle

2006

A Low-Jitter and Low-Power CMOS PLL for Clock Multiplication

Pierre-André Farine, Steve Tanner, Michael Ansorge, Kilian Imfeld

this paper describes a phase-locked loop (PLL) designed for clock multiplication in a LVDS transmitter. The PLL consists of a novel low-jitter charge-pump, a fully differential ring-oscillator based VCO, a dynamic-logic PFD, a 2nd order passive loop filter ...

2006

Frequency-stabilised laser reference system for water vapour spectroscopy and sensing applications

Luc Thévenaz, Daniela Werner

To acheive the requirements of DIAL instrument, a frequency detection unit (FDU) was realised for water vapour spectroscopy. For this we have developed and realised an ECDL, which can be adjusted at 935 nm or at 942 nm, a region also considered as possible ...

IEEE2005

How to take advantage of aliasing in bandlimited signals

Martin Vetterli, Luciano Sbaiz, Patrick Vandewalle

In signal processing systems, aliasing is normally treated as a disturbing signal. That motivates the need for effective analog, optical and digital anti-aliasing filters. However, aliasing conveys also valuable information on the signal above the Nyquist ...

2004

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