Concept

Fixed-point arithmetic

Related publications (131)

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Acceleration of a fixed point algorithm for fluid-structure interaction using transpiration conditions

Simone Deparis, Luca Formaggia

In this work, we address the numerical solution of fluid-structure interaction problems. This issue is particularly difficulty to tackle when the fluid and the solid densities are of the same order, for instance as it happens in hemodynamic applications, s ...

2003

Optimal Scheduling of Rich Media in a Rate-Distortion Sense

Pascal Frossard

We consider the transmission of variable bit rate video over a network offering a guaranteed service such as ATM VBR or the guaranteed service of the IETF. The guaranteed service requires that the flow accepted by the network has to be conforming with a tr ...

SPIE2002

Continuous Wavelet Transform with Arbitrary Scales and O(N) Complexity

Michaël Unser

Summary The continuous wavelet transform (CWT) is a common signal-processing tool for the analysis of nonstationary signals. We propose here a new B-spline-based method that allows the CWT computation at any scale. A nice property of the algorithm is that ...

Elsevier2002

Performance analysis and optimization of the travelling wave ultrasonic motor

Yves Perriard, Matteo Bullo

We will present a method allowing to evaluate the mechanical performances (torque, speed, mechanical power, dissipated losses in the surface of contact between stator and rotor) of the travelling wave ultrasonic motors. The visualization of the motor chara ...

2002

Dead-block prediction & dead-block correlating prefetchers

Babak Falsafi

Effective data prefetching requires accurate mechanisms to predict both “which” cache blocks to prefetch and “when” to prefetch them. This paper proposes the Dead-Block Predictors (DBPs), trace-based predictors that accurately identify “when” an Ll data ca ...

2001

Fast Continuous Wavelet Transform Based on B-Splines

Michaël Unser

The Continuous Wavelet Transform (CWT) is an effective way to analyze nonstationary signals and to localize and characterize singularities. Fast algorithms have already been developed to compute the CWT at integer time points and dyadic or integer scales. ...

SPIE2001

Discretized diffusion processes

Paolo De Los Rios

We study the properties of the "rigid Laplacian" operator; that is we consider solutions of the Laplacian equation in the presence of fixed truncation errors. The dynamics of convergence to the correct analytical solution displays the presence of a metasta ...

American Physical Society2000

Fast and precise Fourier Transforms

Mohammad Amin Shokrollahi

Many applications of fast Fourier transforms (FFTs), such as computer tomography, geophysical signal processing, high-resolution imaging radars, and prediction filters, require high-precision output. An error analysis reveals that the usual method of fixed ...

2000

Spline Kernels for Continuous-Space Image Processing

Michaël Unser, Thierry Blu

We present an explicit formula for spline kernels; these are defined as the convolution of several B-splines of variable widths h and degrees n. The spline kernels are useful for continuous signal processing algorithms that involve B-spline inner-products ...

IEEE2000

CORDIC-Based MMSE-DFE Coefficient Computation

Ali H. Sayed

A modular parallel architecture for a MMSE-DFE coefficient computation processor is presented. The architecture is based on QR factorization of a channel-and-noise-dependent data matrix and is implemented using CORDIC processors within a systolic array arc ...

Academic Press1999