Concept

Virgule fixe

Publications associées (131)

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Field Programmable Compressor Trees: Acceleration of Multi-Input Addition on FPGAs

Paolo Ienne, Yusuf Leblebici, Philip Brisk, Alessandro Cevrero, Ajay Kumar Verma, Hadi Parandeh Afshar, Panagiotis Athanasopoulos

Multi-input addition occurs in a variety of arithmetically intensive signal processing applications. The DSP blocks embedded in high-performance FPGAs perform fixed bitwidth parallel multiplication and Multiply-ACcumulate (MAC) operations. In theory, the c ...

2009

Exchange of Limits: Why Iterative Decoding Works

Rüdiger Urbanke, Satish Babu Korada

We consider communication over binary-input memoryless output-symmetric channels using low-density parity-check codes under MP decoding. The asymptotic (in the length) performance of such a combination for a fixed number of iterations is given by density e ...

2008

Strategy Construction for Parity Games with Imperfect Information

Laurent Doyen

We consider imperfect-information parity games in which strategies rely on observations that provide imperfect information about the history of a play. To solve such games, i.e. to determine the winning regions of players and corresponding winning strategi ...

2008

A Novel FPGA Logic Block for Improved Arithmetic Performance

Philip Brisk, Hadi Parandeh Afshar

To improve FPGA performance for arithmetic circuits, this paper proposes a new architecture for FPGA logic cells that includes a 6:2 compressor. The new cell features additional fast carry-chains that concatenate adjacent compressors and can be routed loca ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2008

The generic Gröbner walk

The Gröbner walk is an algorithm for conversion between Gröbner bases for different term orders. It is based on the polyhedral geometry of the Gröbner fan and involves tracking a line between cones representing the initial and target term order. An importa ...

2007

Mapping Personal Trip OD from Probe Data

Edward Chung

The paper analyses the expected value of OD volumes from probe with fixed error, error that is proportional to zone size and inversely proportional to zone size. To add realism to the analysis, real trip ODs in the Tokyo Metropolitan Region are synthesised ...

2007

Steady-state Solutions in Mathematical Models of Atrial Cell Electrophysiology and their Stability

Vincent Jacquemet

The steady states of the Fenton–Karma, the Courtemanche and the Nygren cell models were studied by determining the fixed points of the dynamical system describing their cell kinetics. The linear stability of the fixed points was investigated, as well as th ...

2007

Hypothesis testing under successive refinement communication constraints

Jun Chen

We investigate the distributed successive refinement (SR) hypothesis testing problem. Bivariate hypothesis H-0 : P-XY against H-1 : PXPY, i.e., test against independence is considered, when a remote sensor sends compressed information about data stream X s ...

Ieee Service Center2007

Dynamic Texture on Fixed-Point Architectures

Sabine Süsstrunk, Luciano Sbaiz, Roberto Costantini

Dynamic textures are sequences of images showing temporal regularity; they can be found in videos representing smoke, flames, flowing water, or moving grass, for instance. Recently, one method based on linear dynamic system theory was proposed to synthesiz ...

2006

Methods for Stator Flux Estimation in Sensorless Field Orientation Control of Induction Motor

Drazen Dujic

Developments trends in commercial drives point that that the next generation of them includes some sort of sensorless torque control. Using the 'spare' processing power of a digital signal processor (DSP) to implement these techniques can significantly red ...

IEEE2005