On the correlation of non-jittered and chaotically-jittered PWM signals carrying maximum information

Author

Rovatti, R. ; Callegari, S. ; Setti, G.

Author_Institution

CEG-DEIS, Bologna Univ., Italy

Volume

3

fYear

2002

fDate

2002

Abstract

We here address the problem of computing the correlation of a PWM signal that carries information and is possibly chaotically jittered in order to avoid high peaks in the power spectrum. A restricted analytical formula is given along with a more general semi-analytical procedure relying on a low-complexity Monte-Carlo estimation. Based on the developed tools, it is shown that the chaos-based frequency modulation of the timebase of the PWM signal is able to cancel the asymptotically periodic trend of the correlation thus reducing the impulsive part of the power spectrum.

Keywords

Monte Carlo methods; chaos; correlation methods; electromagnetic compatibility; frequency modulation; jitter; pulse width modulation; EMC interference reduction; PWM signal timebase; asymptotically periodic trend cancellation; chaos-based frequency modulation; chaotically-jittered signals; general semi-analytical procedure; low-complexity Monte Carlo estimation; maximum information carrying PWM signals; nonjittered signals; power spectrum impulsive part reduction; power spectrum peaks; pulse width modulation; restricted analytical formula; signal correlation computation tools; Chaos; Costs; Filtering; Interference; Power conversion; Power generation; Pulse width modulation; Signal design; Signal processing; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on

Print_ISBN

0-7803-7448-7

Type

conf

DOI

10.1109/ISCAS.2002.1010369

Filename

1010369