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Chaotic systems have been shown to have interesting properties for the generation of spreading sequences in various spread-spectrum applications. The aim of this paper is to exploit the topological features of a time-delay system with appropriate non-linearity to propose sequences having good correlation properties. A novel family of chaotic sequences is proposed as spreading sequences using the Poincare...
In this paper, we propose a new color image encryption technique using two multidimensional chaotic maps: a three dimensional chaotic map for the key expansion and a two dimensional chaotic map for the generation of two chaotic lookup tables. The experimental results demonstrate that the distributions of red, green and blue surfaces of the encrypted image have a random-like behavior. Simulations show...
In this paper, an extension of the existing chaotic digital modulation named chaotic cyclic attractors shift keying (CCASK) is proposed, which uses different orders of chaotic cyclic attractors to modulate the information. The new scheme is analysed under a discrete-time domain, and the noise performance in AWGN channel is simulated, and also calculated in a mixed analytic-numerical way, under some...
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