一种改进的多用户DCSK性能分析

Abstract

Abstract:

A new kind of multiple-access differential chaos shift keying (MA-DCSK) is presented which is based on the chaotic binary sequence and Walsh code. In the proposed system, the signals in the transmitter and the corresponding receiver are multiplied by the same Walsh code. Due to the constant instantaneous power of the chaotic binary signal and the Walsh code orthogonality, the interference between users will be greatly reduced. So, this kind of MA-DCSK has the multiple-access ability. The bit error rate (BER) performance is analyzed and the BER formula is evaluated. Simulation results match the numerical ones well, which supports the theoretical analysis. The performance is compared with that of other kinds of MA-DCSK in the additive white Gaussian noise (AWGN) channel. It is shown that the proposed MA-DCSK system is comparable to other MA-DCSK systems as all users use the different chaotic initial values. Compared to other MA-DCSK systems, the structure of the proposed system is simpler and more feasible to be implemented since the delays are invariant and the data to be processed is a kind of antipodal binary.

Key words: differential chaos shift keying, multiple-access, chaos communication, bit error rate

CLC Number:

TN9141. 42

ZHOU Zhi-bo;ZHOU Tong;WANG Jin-xiang. Performance analysis of an improved multiple-access differential chaos shift keying[J].J4, 2009, 36(4): 730-735.

References

［1］Mazzini G, Setti G, Rovatti R. Chaotic Complex Spreading Sequences for Asynchronous CDMA—Part Ⅰ: System Modeling and Results ［J］. IEEE Trans on Circuits Syst. I, 1997, 44(10): 937-947.
［2］Wai M T, Lau F C M, Chi K T. Generalized Correlation-Delay-Shift-Keying Scheme for Noncoherent Chaos-Based Communication Systems ［J］. IEEE Trans on Circuits Syst. I, 2006, 53(3): 712-721.
［3］Salberg A-B, Hanssen A. A Subspace Theory for Differential Chaos-Shift Keying ［J］. IEEE Trans on Circuits Syst Ⅱ, 2006, 53(1): 51-55.
［4］张翌维, 沈绪榜, 朱向东. 一种FM-QCSK 混沌数字通信系统及其性能分析［J］. 西安电子科技大学学报, 2007, 34(2): 259-263.
Zhang Yiwei, Shen Xubang, Zhu Xiangdong. An FM-QCSK Chaotic Communication System and Its Performance Analysis［J］. Journal of Xidian University, 2007, 34(2): 259-263.
［5］Mandal S, Banerjee S. Analysis and CMOS Implementation of a Chaos-based Communication system ［J］. IEEE Trans on Circuits Syst Ⅰ, 2004, 51(9): 1708-1722.
［6］Restituto M D, Acosta A J, Vzquez A R. A Mixed-signal Integrated Circuit for FM-DCSK Modulation ［J］. IEEE Journal of Solid-state Circuits, 2005, 40(7):1460-1471.
［7］Lau F C M, Yip M M, Tse C K, et al. A Multiple-access Technique for Differential Chaos Shift Keying ［J］. IEEE Trans on Circuits Syst Ⅰ, 2002, 49(1): 96-104.
［8］Kolumban G, Kennedy M P, Jako Z, et al. Chaotic Communications with Corrlator Receivers: Theory and Performance Limits ［J］. Proceedings of the IEEE, 2002, 90(5): 711-732.
［9］Yao J, Lawrance J. Performance Analysis and Optimization of Multi-user Differential Chaos-Shift Keying Communication Systems ［J］. IEEE Trans on Circuits Syst Ⅰ, 2006, 53(9):2075-2091.
［10］Kennedy M P, Kolumbn G, Kis G, et al. Recent Advances in Communicating with Chaos［C］//Proc IEEE International Symposium on Circuits and Systems. Monterey: IEEE, 1998: 461-464.
［11］Kohda T, Tsuneda A. Statistics of Chaotic Binary Sequences ［J］. IEEE Trans on Inform Theory, 1997, 43(1):104-112.
［12］Tse K, Tam W M. Analysis of Bit Error Rates for Multiple Access CSK and DCSK Communication Systems ［J］. IEEE Trans on Circuits and Systems-Ⅰ, 2003, 50(5): 702-707.

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Performance analysis of an improved multiple-access differential chaos shift keying

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