无信号内干扰的降噪多用户CDSK混沌通信系统

doi:10.3969/j.issn.1001-506X.2020.09.28

Abstract

Abstract:

Because of the disadvantages of traditional chaotic communication system correlation delay shift keying(CDSK) scheme which has high bit error rate (BER), a chaotic communication system of noise reduction multiple-user CDSK system with no intra-signal interference is proposed. At the transmitter, the reference signal is obtained by duplicating P times of R-long chaotic sequence, and then divided into two channels. The orthogonality of Walsh code is used to make the reference signal and the information signal in each channel orthogonal to each other and the data transmission rate is further improved by combining with orthogonal modulation. At the receiver, the received signal is processed with a moving average filter to reduce the noise variance and the correlation is demodulated. The BER formula is derived and simulated about the system in additive white Gaussian noise (AWGN) channel and two-path Rayleigh fading channel. The results show that this system can effectively improve the BER performance and data transmission rate.

Key words: chaotic communication, correlation delay shift keying (CDSK), multiple-user, noise reduction, Walsh code

CLC Number:

TN911.3

Gang ZHANG, Huajie HE, Tianqi ZHANG. Chaotic communication system of noise reduction multiuser correlation delay shift keying with no intra-signal interference[J]. Systems Engineering and Electronics, 2020, 42(9): 2098-2106.

Figures/Tables 11

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References 20

1	QUYEN N X . Bit-error-rate evaluation of high-efficiency differential-chaos-shift-keying system over wireless channels[J]. Journal of Circuits, Systems and Computers, 2018, 27 (1): 1850008. doi: 10.1142/S0218126618500081
2	XU W K , HUANG T T , WANG L . Code-shifted differential chaos shift keying with code index modulation for high data rate transmission[J]. IEEE Trans.on Communications, 2017, 65 (1): 4285- 4299.
3	CHENG G X , WANG L , XU W K , et al. Carrier index differential chaos shift keying modulation[J]. IEEE Trans.on Circuits and Systems Ⅱ: Express Briefs, 2017, 64 (8): 907- 911. doi: 10.1109/TCSII.2016.2613093
4	CAO X P , LU Y B , HUANG T T , et al. Performance of different DCSK schemes over the UWB in-body channel[J]. Journal of Chongqing University of Posts and Telecommunications, 2016, 28 (1): 72- 77.
5	YE L F , CHEN G R , WANG L . Essence and advantages of FM-DCSK versus conventional spread-spectrum communication methods[J]. Circuits Systems & Signal Processing, 2005, 24 (5): 657- 673.
6	MIN X , XU W , WANG L , et al. Promising performance of a frequency-modulated differential chaos shift keying ultra-wideband system under indoor environments[J]. IET Communications, 2010, 4 (2): 125- 134. doi: 10.1049/iet-com.2008.0658
7	KOLUMBAN G. UWB technology: chaotic communications versus non-coherent impulse radio[C]//Proc.of the IEEE European Conference on Circuit Theory and Design, 2005.
8	KADDOUM G , SOUJERI E , NIJSURE Y . Design of a short reference non-coherent chaos-based communication systems[J]. IEEE Trans.on Communications, 2016, 64 (2): 680- 689. doi: 10.1109/TCOMM.2015.2514089
9	KOLUMBAN G. Differential chaos shift keying: a robust coding for chaotic communication[C]//Proc.of the 4th International Workshop on Nonlinear Dynamics of Electronic Systems, 1996: 87-92.
10	YANG H , TANG W K S , CHEN G R , et al. System design and performance analysis of orthogonal multi-level differential chaos shift keying modulation scheme[J]. IEEE Trans.on Circuits and Systems Ⅰ: Regular Papers, 2016, 63 (1): 146- 156. doi: 10.1109/TCSI.2015.2510622
11	KADDOUM G . Design and performance analysis of a multi-user OFDM based differential chaos shift keying communication system[J]. IEEE Trans.on Communications, 2016, 64 (1): 249- 260. doi: 10.1109/TCOMM.2015.2502259
12	KADDOUM G , GAGNON F . Performance analysis of STBC-CSK communication system over slow fading channel[J]. Signal Processing, 2013, 93 (7): 2055- 2060. doi: 10.1016/j.sigpro.2012.12.020
13	QUYEN N X , DUONG T Q , 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: 10.1049/iet-com.2015.1103
14	张刚, 王传刚, 张天骐. 基于正交混沌载波的多用户DCSK系统性能分析[J]. 系统工程与电子技术, 2017, 39 (2): 431- 436.
	ZHANG G , WANG C G , ZHANG T Q . Performance analyze for MU-DCSK system based on orthogonal chaotic carrier[J]. Systems Engineering and Electronics, 2017, 39 (2): 431- 436.
15	QUYEN , XUAN N . On the study of a quadrature DCSK modu-lation scheme for cognitive radio[J]. International Journal of Bifurcation and Chaos, 2017, 27 (9): 1750135. doi: 10.1142/S0218127417501358
16	张刚, 徐联冰, 张天骐. 基于频分复用的无信号内干扰多用户相关延迟键控通信系统[J]. 上海交通大学学报, 2019, 53 (5): 575- 583.
	ZHANG G , XU L B , ZHANG T Q . NISI-MU-CDSK communication system based on frequency division multiplexing[J]. Journal of Shanghai Jiao Tong University, 2019, 53 (5): 575- 583.
17	ZHOU H M , ZHANG Y , YU Y . Noise reduction multi-carrier differential chaos shift keying system[J]. Journal of Circuits, Systems and Computers, 2018, 27 (14): 1850223. doi: 10.1142/S0218126618502237
18	HUI L I, SONG Y, CAO D. FDM-DCSK UWB system[C]//Proc.of the IEEE 8th International Conference on Signal, 2006: 2319-2322.
19	CAI G F , WANG L , CHEN G R . Capacity of the non-coherent DCSK system over Rayleigh fading channel[J]. IET Communications, 2016, 10 (18): 2663- 2669. doi: 10.1049/iet-com.2016.0487
20	GOECKEL D L , ZHANG Q . Slightly frequency-shifted reference ultra-wideband (UWB) radio[J]. IEEE Trans.on Communications, 2007, 55 (3): 508- 519. doi: 10.1109/TCOMM.2007.892452

系统	频谱效率
NR-MUCDSK	2N/β
OMU-DCSK	N/(2β)
NISI-MU-CDSK	N/β
DCSK	1/(2β)
CDSK	1/β

系统	乘法器数量	加法器数量
NR-MUCDSK	4(N+1)β	(2N+1)β
OMU-DCSK	2Nβ	(N-1)β
NISI-MU-CDSK	(2N+1)β	Nβ

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[2]	Lifang HE, Xueshuang WU, Peng ZHANG, Jun CHEN. Improved quadrature multicarrier noise reduction differential chaos shift keying communication system [J]. Systems Engineering and Electronics, 2021, 43(10): 3008-3016.
[3]	Gang ZHANG, Jinhui LIU, Peng ZHANG. Multi-user orthogonal multi-level differential chaos shift keying communication system [J]. Systems Engineering and Electronics, 2021, 43(1): 244-250.
[4]	Danna ZHAGN, Feng QIAN, Hui FENG, Niancheng WEN. Noise reduction algorithm of Walsh code soft spread spectrum signal [J]. Systems Engineering and Electronics, 2020, 42(4): 773-780.
[5]	ZHANG Gang, XU Lianbing, ZHANG Tianqi. MAMU-CDSK chaotic communication system with no intrasignal interference [J]. Systems Engineering and Electronics, 2019, 41(4): 906-913.
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[7]	ZHANG Gang, HAO Yiman, ZHANG Tianqi. High rate noise reduction differential chaos shift keying [J]. Systems Engineering and Electronics, 2018, 40(7): 1588-1594.
[8]	ANG Bo, ZHANG Jun-ying. Gaussian noise model based algorithm to construct Markov network [J]. Journal of Systems Engineering and Electronics, 2012, 34(5): 1041-1045.

Chaotic communication system of noise reduction multiuser correlation delay shift keying with no intra-signal interference

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