Noise Probability Density Function in Fixed-Point Systems based on smooth operators

Romuald Rocher 1 Pascal Scalart 1
1 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources
Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE
Abstract : To satisfy cost constraints, application implementation in embed- ded systems requires fixed point arithmetic. Thus, the application defined in floating point arithmetic must be converted into a fixed- point specification. This conversion requires accuracy evaluation to ensure algorithm integrity. Indeed, fixed-point arithmetic generates quantization noises due to the elimination of some bits during a cast operation. These noises propagate through the system and degrade computing accuracy. In this paper, a method based on Generalized Gaussian PDF is presented to model and generate the output noise of the system. The accuracy of the proposed model is evaluated through different experiments.
Type de document :
Communication dans un congrès
DASIP, Oct 2012, Karksruhe, Germany. 2012
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Soumis le : lundi 15 octobre 2012 - 13:36:15
Dernière modification le : jeudi 15 novembre 2018 - 11:57:39
Document(s) archivé(s) le : mercredi 16 janvier 2013 - 03:38:29


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  • HAL Id : hal-00741824, version 1


Romuald Rocher, Pascal Scalart. Noise Probability Density Function in Fixed-Point Systems based on smooth operators. DASIP, Oct 2012, Karksruhe, Germany. 2012. 〈hal-00741824〉



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