Title :
Quadrature chaos-shift keying: theory and performance analysis
Author :
Galias, Zbigniew ; Maggio, Gian Mario
Author_Institution :
Inst. for Nonlinear Sci., California Univ., San Diego, La Jolla, CA, USA
Abstract :
In this brief, we propose a multilevel version of the differential chaos shift keying (DCSK) telecommunication system. The scheme, that we call quadrature chaos shift keying (QCSK), is based upon the generation of an orthogonal basis of chaotic functions. QCSK is characterized by an increased data rate with respect to DCSK, with the same bandwidth occupation. The price for the performance enhancement is the increased complexity of both the transmitter and the receiver.
Keywords :
chaotic communication; digital communication; modulation; DCSK telecommunication system; QCSK modulation; differential chaos shift keying; digital communication; multilevel chaos-based modulation scheme; orthogonal chaotic signals; performance enhancement; quadrature chaos shift keying; Bandwidth; Binary phase shift keying; Bit error rate; Chaos; Chaotic communication; Constellation diagram; Digital communication; Performance analysis; Quadrature phase shift keying; Signal generators;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
DOI :
10.1109/TCSI.2001.972858
