Differential Chaos Shift Keying Secure Communication System Based on Repeated Chaotic Spreading Sequence

doi:10.19596/j.cnki.1001-246x.8431

Abstract

Abstract:

A kind of differential chaos keying communication system was presented based on repeated chaotic spreading sequence(RCSS). Bit error rate(BER) performance is theortically analyzed and then verified with numerical simulations. In the system, a repeated chaotic spreading sequence is produced by copying the reference sequence of the DCSK-modulated signal, and part of the parallel bit streams are multipled with this RSS. The resulting signals are then conveyed into the channel. Theoretical analysis and simulation results show that BER performance of the system is better than DCSK, CDSK and CD-DCSK. The system performs better as the spreading factor reduces. BER performance over an AWGN channel is better than aht over a Rayleigh channel.

Key words: chaos secure communication, differential chaos shift keying, repeated chaotic spreading sequence

Ya-qiong JIA, Bin YU. Differential Chaos Shift Keying Secure Communication System Based on Repeated Chaotic Spreading Sequence[J]. Chinese Journal of Computational Physics, 2022, 39(4): 491-497.

Figures/Tables 7

Fig.1 Structure of the RCSS-DCSK chaotic secrecy communication system (a) transmitter; (b) channel model; (c) receiver

Fig.2 Illustration of signals in the transmitter

Fig.3 A chaotic sequence generator

Fig.4 A Chebysev chaotic sequence of order 2

Fig.5 BER performance of different systems with β = 30

Fig.6 BER performance of systems with different spreading factors

Fig.7 BER performance for RCSS-DCSK system with different noise distributions

References 23

1	CHEN Z , ZHANG L , WU Z , et al. Reliable and efficient sparse code spreading aided MC-DCSK transceiver design for multiuser transmissions[J]. IEEE Transactions on Communications, 2021, 69 (3): 1480- 1495. DOI
2	CAI X , XU W , ZHANG R , et al. A multilevel code shifted differential chaos shift keying system with M-ary modulation[J]. IEEE Transactions on Circuits and Systems Ⅱ: Express Briefs, 2019, 66 (8): 1451- 1455. DOI
3	BAI C , REN H , GREBOGI C . Experimental phase separation differential chaos shift keying wireless communication based on matched filter[J]. IEEE Access, 2019, 7 (3): 25274- 25287.
4	TAN Y , XU W , HU W , et al. Efficient and robust M-ary differential chaos shift keying scheme with code index modulation[J]. IET Communications, 2019, 13 (2): 232- 242. DOI
5	SHI J , YANG L , LIU D . Synchronization and parameter identification of chaotic systems based on quantum-behaved particle swarm optimization[J]. Chinese Journal of Computational Physics, 2019, 36 (2): 236- 244.
6	SHI J , LI P , LIU G . Synchronization control and parameter identification for unified chaotic system based on improved clonal selection algorithm[J]. Chinese Journal of Computational Physics, 2020, 37 (2): 240- 252.
7	JOVIC B , UNSWORTH C , SANDHU G , et al. A robust sequence synchronization unit for multi-user DS-CDMA chaos-based communication systems[J]. Signal Processing, 2007, 87 (7): 1692- 1708. DOI
8	KANG Z , CANG S , LI Y . A conservative-chaos-based key distribution protocol and image encryption algorithm[J]. Chinese Journal of Computational Physics, 2021, 38 (2): 231- 243.
9	QUYEN N , DUONG T , NALLANATHAN A . Modelling, analysis and performance comparison of two direct sampling DCSK receivers under frequency non-selective fading channels[J]. IET Communications, 2016, 10 (11): 1263- 1272. DOI
10	DUAN J , YANG H . Phase-orthogonality CDSK: A reliable and effective chaotic communication scheme[J]. IET Communications, 2018, 12 (9): 1116- 1122. DOI
11	MA H , CAI G , FANG Y , et al. A new enhanced energy-detector-based FM-DCSK UWB system for tactile internet[J]. IEEE Transactions on Industrial Informatics, 2019, 15 (5): 3028- 3039. DOI
12	XU W , TAN Y , LAU F , et al. Design and optimization of differential chaos shift keying scheme with code index modulation[J]. IEEE Transactions on Communications, 2018, 66 (5): 1970- 1980. DOI
13	QUYEN N . On the performance of low-rate wireless correlation-delay-shift-keying system[J]. AEUE-International Journal of Electronics and Communications, 2017, 71 (1): 37- 44.
14	YANG H , JIANG G . High-efficiency differential-chaos-shift-keying scheme for chaos-based noncoherent communication[J]. IEEE Transactions on Circuits Systems Ⅱ Express Briefs, 2012, 59 (5): 312- 316. DOI
15	朱勇, 王佳楠, 丁群. 新型的CD-DCSK混沌键控保密通信系统[J]. 通信学报, 2012, 33 (5): 169- 176. DOI
16	张刚, 孟维, 张天骐. 一种改进型多用户正交差分混沌键控[J]. 电子技术应用, 2015, 41 (12): 76- 82.
17	YANG H , XU S , JIANG G . A high data rate solution for differential chaos shift keying based on carrier index modulation[J]. IEEE Transactions on Circuits and Systems Ⅱ: Express Briefs, 2021, 68 (4): 1487- 1491. DOI
18	YANG H , TANG W , CHEN G , et al. Multi-carrier chaos shift keying: System design and performance analysis[J]. IEEE Transactions on Circuits Systems Ⅰ: Regular Papers, 2017, 64 (8): 2182- 2194. DOI
19	CHENG G , XU W , CHEN C , et al. SWIPT schemes for carrier index differential chaos shift keying modulation: A new look at the inactive carriers[J]. IEEE Transactions on Vehicular Technology, 2019, 68 (3): 2557- 2570. DOI
20	KADDOUM G , SOUJERI E . NR-DCSK: A noise reduction differential chaos shift keying system[J]. IEEE Transactions on Circuits Systems Ⅱ: Express Briefs, 2016, 63 (7): 648- 652. DOI
21	郑戎慧, 隋涛, 张桐, 等. 一种针对DCSK的混沌序列优选分析[J]. 信息通信, 2020, 11, 46- 48.
22	KOHDA T , TSUNEDA A , LAWRANCE A . Correlational properties of Chebyshev chaotic sequences[J]. Journal of Time Series Analysis, 2000, 21 (2): 181- 191. DOI
23	蒋国平, 杨华, 段俊毅. 混沌数字调制方案及性能分析[M]. 北京: 科学出版社, 2015.