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Chaos Shift Keying Based on In-Phase and Anti-Phase Chaotic Synchronization
Toshimitsu USHIO Takaharu INNAMI Shinzo KODAMA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/10/25
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and its Applications (NOLTA))
Category: Sequence, Time Series and Applications
chaos, synchronization, digital communication,
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Chaos shift keying (CSK) is a modulation method in digital communication systems using chaotically modulated signals. This paper proposes novel CSK which utilizes two types of chaotic synchronization called in-phase and anti-phase chaotic synchronization. In this method, binary signals are mapped into two phases of chaotic synchronization, and a transmitter generates a two-phase-shift-keyed chaotic signal. So it will be called chaotic phase shift keying (CPSK) in this paper. This method is simpler than that based on two pairs of different chaotic systems. We also discuss an effect of noise in transmission lines.