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.
Complete list of metadatas

Cited literature [11 references]  Display  Hide  Download

https://hal.inria.fr/hal-00741824
Contributor : Romuald Rocher <>
Submitted on : Monday, October 15, 2012 - 1:36:15 PM
Last modification on : Thursday, November 15, 2018 - 11:57:39 AM
Long-term archiving on: Wednesday, January 16, 2013 - 3:38:29 AM

File

opdec.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-00741824, version 1

Citation

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

Share

Metrics

Record views

1014

Files downloads

311