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Open AccessArticle

A Secure Transmission Scheme Based on Artificial Fading for Wireless CrowdSensing Networks

by Zhi-Jiang Xu 1,2,3, Fang-Ni Chen 3,4, Yuan Wu 2 and Yi Gong 3,*
1
Zhijiang College, Zhejiang University of Technology, Shaoxing 312030, China
2
College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China
3
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
4
School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(10), 3500; https://doi.org/10.3390/s18103500
Received: 29 August 2018 / Revised: 6 October 2018 / Accepted: 10 October 2018 / Published: 17 October 2018
For secure transmission of low cost single antenna communication nodes in wireless crowdsensing networks under static channel, a physical layer communication scheme is proposed, where each digital modulated symbol is encrypted by a random key at the transmitter and decrypted with the same key at the receiver. The legal users exploit the synchronized chaotic sequence and the two-stage block interleaver to generate a complex random variable (random key), whereby its envelope obeys the Rayleigh distribution and its phase obeys the uniformly distribution. The modulated symbol is multiplied by the complex random variable (encryption) to imitate the Rayleigh fading of the channel at the transmitting end. The received symbol is divided by the identical complex random variable (decryption) to recover the transmitted message before the digital demodulation at the receiving end. Simulation results show that the bit error ratio (BER) performance of the legitimate users is consistent with the theoretical value of the Rayleigh fading channel, while the corresponding BER of the eavesdropper is too high (about 0.5) to intercept any information. View Full-Text
Keywords: chaotic sequence; artificial fading; physical layer security; wireless crowdsensing networks chaotic sequence; artificial fading; physical layer security; wireless crowdsensing networks
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Xu, Z.-J.; Chen, F.-N.; Wu, Y.; Gong, Y. A Secure Transmission Scheme Based on Artificial Fading for Wireless CrowdSensing Networks. Sensors 2018, 18, 3500.

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