Driving Synchronization of Spatiotemporal Chaos and its Applications in CDMA Communications

This paper investigates the driving synchronization of spatiotemporal chaos. Using this method, synchronization could be achieved efficiently. By improving the driving sequence generation method, the spatial periodicity in the original system is overcome. Large quantities of chaotic sequences are available, which possess the excellent properties expected in Code Division Multiple Access (CDMA) communications. These chaotic sequences can be used as the spreading sequences in place of the traditional pseudo-noise sequences. We also evaluate the performance of the chaotic CDMA communication systems and compute the average bit error rate caused by the multi-user interference and the noise in the channel. The theoretical and simulation results show the excellent performance of the scheme.

[1]  U. Parlitz,et al.  Robust communication based on chaotic spreading sequences , 1994 .

[2]  Bambi Hu,et al.  Coupled synchronization of spatiotemporal chaos , 1999 .

[3]  Qin Tuan-fa,et al.  SYNCHRONIZING SPATIOTEMPORAL CHAOS IN COUPLED MAP LATTICES VIA ACTIVE-PASSIVE DECOMPOSITION , 1998 .

[4]  Hai Wang,et al.  Coupled-map spatiotemporal chaos synchronization and application in CDMA , 1997, Proceedings of ICICS, 1997 International Conference on Information, Communications and Signal Processing. Theme: Trends in Information Systems Engineering and Wireless Multimedia Communications (Cat..

[5]  Kaneko,et al.  Bifurcations and spatial chaos in an open flow model. , 1994, Physical review letters.

[6]  Carroll,et al.  Synchronization in chaotic systems. , 1990, Physical review letters.

[7]  Ljupco Kocarev,et al.  General approach for chaotic synchronization with applications to communication. , 1995, Physical review letters.

[8]  Clare D. McGillem,et al.  A chaotic direct-sequence spread-spectrum communication system , 1994, IEEE Trans. Commun..

[9]  K. P. Dabke,et al.  Spread Spectrum Communications Based on Chaotic Systems , 1996 .

[10]  Jinghua Xiao,et al.  Synchronization of spatiotemporal chaos and its applications , 1997 .

[11]  Hu Jiandong,et al.  A synchronous CDMA system using discrete coupled-chaotic sequence , 1996, Proceedings of SOUTHEASTCON '96.

[12]  Philip T. Downes.  Secure communication using chaotic synchronization , 1993, Optics & Photonics.

[13]  Gang Hu,et al.  SYNCHRONIZATION OF SPATIOTEMPORAL CHAOS AND ITS APPLICATION TO MULTICHANNEL SPREAD-SPECTRUM COMMUNICATION , 1996 .

[14]  Henry Leung,et al.  Spread-spectrum signals and the chaotic logistic map , 1999 .

[15]  G. Du,et al.  Digital communication by active-passive-decomposition synchronization in hyperchaotic systems , 1998 .

[16]  Yu Jiang,et al.  SYNCHRONIZATION OF SPATIOTEMPORAL CHAOS IN ASYMMETRICALLY COUPLED MAP LATTICES , 1998 .

[17]  Tohru Kohda,et al.  Pseudonoise Sequences by Chaotic Nonlinear Maps and Their Correlation Properties , 1993 .