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A Threshold Enhancement Technique for Chaotic On-Off Keying Scheme
Nizar Naji Albassam , Sumesh Eratt Parameswaran, Vidhya Lavanya Ramachandran
Pages - 25 - 37     |    Revised - 30-06-2015     |    Published - 31-07-2015
Volume - 9   Issue - 3    |    Publication Date - July 2015  Table of Contents
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KEYWORDS
Chaotic Communication, Error Probability, Correlation, Sequences, Gaussian Distribution.
ABSTRACT
In this paper, an improvement for Chaotic ON-OFF (COOK) Keying scheme is proposed. The scheme enhances Bit Error Rate (BER) performance of standard COOK by keeping the signal elements at fixed distance from the threshold irrespective of noise power. Each transmitted chaotic segment is added to its flipped version before transmission. This reduces the effect of noise contribution at correlator of the receiver. The proposed system is tested in Additive White Gaussian Noise (AWGN) channel and compared with the standard COOK under different Eb/No levels. A theoretical estimate of BER is derived and compared with the simulation results. Effect of spreading factor increment in the proposed system is studied. Results show that the proposed scheme has a considerable advantage over the standard COOK at similar average bit energy and with higher values of spreading factors.
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1 G. Kolumban, M. P. Kennedy and L. O. Chua. “The role of synchronization in digital communications using chaos. I. Fundamentals of digital communications.” IEEE Trans. Circuits Syst, vol. 44, no. 10, pp. 927-936, 1997.
2 F. C. Lau and C. K. Tse. Chaos-based digital communication systems: Operating Principles, Analysis Methods, and Performance Evaluation,” Springer, 2003.
3 U. Partiz, L. O. Chua, L. Kocarev and K. S. Halle. “Transmission of digital signals by chaotic synchronization.” Int. J. Bifurcation Chaos Appl. Sci. Eng, vol. 2, no. 4, pp. 973-977, 1992.
4 F. Peng, M. Long and Y. Chen. “Bit error rate improvement for chaos shift keying chaotic communication systems.” IET Communications, vol. 6, no. 16, pp. 2639-2644, 2012.
5 L. F. Abdulameer, D. J. Jignesh, U. Sripati and M. Kulkarni. “BER performance improvement for secure wireless communication systems based on CSK- STBC techniques,” in Proc Int. Conf. Radar, Commun. Comput., Tiruvannamalai, India 2012,pp. 1-5.
6 A. J. Lawrance and G. Ohama. “Bit Error Probability and Bit Outage Rate in Chaos Communication.” Circuits, Syst. & Signal Process., vol. 24, no. 5, pp. 519-534, 2005.
7 Kisel, H Dedieu and T. Schimming, “Maximum likelihood approaches for noncoherent communications with chaotic carriers.” IEEE Trans. Circuits Syst., vol. 48, no. 5, pp. 533-542, 2001.
8 G. Kis, Z. Jiiko, M. P. Kennedy and G. Kolumban. “Chaotic communications without synchronization.” In Proc. 6th IEE Conf. on telecommun, Edinburgh, UK, 1998,pp. 49-53, 1998
9 C. K. Tse and F. C. M. Lau. “A Return Map Regression Approach for Noncoherent Detection in Chaotic Digital Communications” Int. J. Bifurcation Chaos Appl. Sci. Eng. vol. 13, no. 03, pp. 685-690, 2003.
10 G. Papanicolaou, L. Ryzhik and K. Solna. “Statistical Stability in Time Reversal.” SIAM J. Appl. Math. vol. 64, no. 4, pp. 1133-1155, 2004.
11 G. Bal, G. Papanicolaou and L. Ryzhik., “Self Averaging in Time Reversal for the Parabolic Wave Equation”, Stochastic and Dynamics. vol. 2, pp. 507-531, 2002.
12 G. Bal. “On the self-averaging of wave energy in random media.” Multiscale Model. Simul., 2, 398-420, 2004.
13 H. Yang and G. P. Jiang. “High-Efficiency Differential-Chaos-Shift-Keying Scheme for ChaosBased Noncoherent Communication.” IEEE Trans. Circuits Syst. II Express Briefs, vol. 59, no. 5, pp. 312-316, 2012.
14 M. Sushchik, L. S. Tsimring and A. R. Volkovskii. “Performance analysis of correlation-based communication schemes utilizing chaos.” IEEE Trans. Circuits Syst., vol. 47, no. 12, pp. 1684-1691, 2000.
15 L. E. Larson, J. M. Liu and L. S. Tsimring. Digital Communications using Chaos and Non Liner dynamics. Springer, 2006.
16 A. Abel, M Gotz and W. Schwarz. “Statistical analysis of chaotic communication schemes,” in Proc. IEEE Int. Symp. on Circuits and Syst., Monterrey, 1998, pp. 465-486.
Dr. Nizar Naji Albassam
Middle East College - Oman
nazarhooby@yahoo.co.uk
Dr. Sumesh Eratt Parameswaran
Middle East College Electronics and Communications Engineering Departme nt Oman - Oman
Dr. Vidhya Lavanya Ramachandran
Anna University, Chennai, India - India