A multi-user transmission using chaotic carriers |
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| Authors: | Jean-Philippe Mangeot Frederic Launay Patrick Coirault |
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| Institution: | 1. University of Antwerp - imec, IDLab, Department of Mathematics and Computer Science, Sint-Pietersvliet 7, Antwerp 2000, Belgium;2. Department of Electronic and Telecommunications Engineering, University of Antioquia, Street 67 53 - 10, Medellín, Colombia;1. École de Technologie Supérieure, University of Quebec, Montreal, QC H3C 1K3, Canada;2. National Key Laboratory of Science and Technology on Multispectral Information Processing, School of Automation, Huazhong University of Science and Technology, Wuhan 430074, China;3. Wuhan Junhui Technology Development Co., Ltd, Hubei, 430074, China;4. Normandie Univ, UNIROUEN, ESIGELEC, IRSEEM, 76000 Rouen, France;1. Department of Communication Engneering, Xiamen University, Xiamen, China;2. Department of Computer and Information Sciences, Temple University, Philadelphia, PA, USA;3. Department of Electrical and Computer Engineering, University of Idaho, Moscow, ID, USA |
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| Abstract: | From the unicity and orthogonality properties of chaotic sequences, it is demonstrated that a sum of N chaotic signals generated from a fixed class of chaotic systems is unique. Consequently, within a framework of a multi-user transmission, it is shown that synchronizing N chaotic carriers that emit simultaneously on the same frequency band is feasible. In this paper, the carriers are generated from Chua’s circuits and are modulated in amplitude by the information signal. Demodulation is ensured by the minimization of a cost function. Numerical simulations show that this synchronization method is robust in presence of noise and allows the integration of a high number of users. |
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