On accurate piecewise linear ROM-less direct digital frequency synthesizers

Pao Szu Wu, Valeriu Beiu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper deals with approximation circuits for sine waves, with applications to low-power direct digital frequency synthesizers (DDFSs). The goal is to determine very accurate approximations, i.e. having very low Maximum Absolute Errors (MAE). These allow for eliminating the ROM and reducing power. They rely on simple circuitry. The paper starts by presenting previous approximation techniques focusing on ROM-less piecewise linear ones. These will be followed by several new ROM-less piecewise linear approximations, and by a very thorough comparison of the newly introduced ones with respect to those presented in the literature. The solutions presented in this paper significantly reduce the MAE with a very modest increase in circuitry (one more multiplexer), and/or 1-2 bits of extra precision.

Original languageEnglish
Title of host publicationProceedings of 2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
Pages1595-1599
Number of pages5
DOIs
Publication statusPublished - 2003
Externally publishedYes
Event2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03 - Nanjing, China
Duration: Dec 14 2003Dec 17 2003

Publication series

NameProceedings of 2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
Volume2

Other

Other2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
Country/TerritoryChina
CityNanjing
Period12/14/0312/17/03

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Fingerprint

Dive into the research topics of 'On accurate piecewise linear ROM-less direct digital frequency synthesizers'. Together they form a unique fingerprint.

Cite this