Title :
Spectral properties of chaos-based FM signals: theory and simulation results
Author :
Callegari, Sergio ; Rovatti, Riccardo ; Setti, Gianluca
Author_Institution :
Dept. of Electron., Comput. Sci., & Syst. (DEIS), Bologna Univ., Italy
Abstract :
This paper addresses the problem of generating constant-envelope wideband (CEW) signals, for which applications are emerging both in telecommunications (as information carriers) and in digital/power electronics (to aid the synthesis of timing signals which favor electromagnetic compliance). A flexible generation technique consists in driving a frequency modulation (FM) modulator with random or chaotic sequences. Mathematical tools for predicting some spectral properties of random-FM and chaotic-FM CEW signals are herein introduced by commenting on recent results and presenting novel ones in a coherent framework.
Keywords :
chaotic communication; frequency modulation; random sequences; spectral analysis; spread spectrum communication; FM modulator driving; chaos-based FM signals; chaotic sequences; chaotic-FM signals; constant-envelope wideband signals; flexible generation technique; frequency modulation; random sequences; random-FM signals; spectral properties; spread spectrum; wideband signal generation; Chaos; Chaotic communication; Frequency modulation; Power electronics; Power generation; Signal generators; Signal processing; Spread spectrum communication; Timing; Wideband;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
DOI :
10.1109/TCSI.2002.807510
