Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Fast and Accurate Computation of the Round-Off Noise of LTI Systems
Year:2008
Research Areas
  • Electronics engineering
Information
Abstract
From its introduction in the last decade, Affine Arithmetic (AA) has shown beneficial properties to speed up the times required by the computation procedures in a wide variety of areas. In the determination of the optimum set of finite word-lengths of the digital signal processing systems, the use of AA has been recently suggested by several authors, but the existing procedures provide pessimistic results. The aim of this paper is to present a novel approach to compute the Round-Off Noise (RON) using AA which is both, faster and more accurate, than the existing techniques and to justify that this type of computation is restricted to Linear Time-Invariant (LTI) systems. Due to the novel definition of the AA-based models, this is the first methodology that performs interval-based computation of the RON. The provided comparative results show that the proposed technique is faster than the existing numerical ones with an observed speedup ranging from 1.6 to 20.48, and that the application of discrete noise models obtains up to 5 times more accurate results than the traditional estimations.
International
Si
JCR
Si
Title
IET Computers and Digital Techniques
ISBN
1751-8601
Impact factor JCR
0
Impact info
Volume
2
10.1049/iet-cds:20070198
Journal number
4
From page
393
To page
408
Month
AGOSTO
Ranking
Participants
  • Autor: Juan Antonio Lopez Martin (UPM)
  • Autor: Carlos Carreras Vaquer (UPM)
  • Autor: Octavio Nieto-Taladriz Garcia (UPM)
  • Autor: Gabriel Caffarena Fernandez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Laboratorio de Sistemas Integrados (LSI)
  • Departamento: Ingeniería Electrónica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)