Space optical communication systems based on differential chaotic keying and its security analysis

Guo Ruiqiang; Li Min; Wu Junpeng; Liu Xin; Wei Zikang

doi:10.3788/IRLA20200207

Free space optical communication(FSO) is a communication system that realizes two-way information transmission through laser without optical fiber. It has the characteristics of wide bandwidth, good confidentiality, strong anti-interference, no frequency application, small size and low power consumption. Despite the high security of the FSO communication system, beam overflow still threatens the security of the communication. The use of chaotic encryption in communication can effectively improve the security of the system. In this paper, the differential chaos keying(DCSK) Gamma-Gamma turbulence model was used to improve the security of the FSO communication system, the expression of the system bit error rate was derived. Through the image data transmission of spatial channel, and the statistical histogram, pixel correlation and plaintext sensitivity were analyzed on the received data, the results show that the system has good security performance.

Space optical communication systems based on differential chaotic keying and its security analysis

1. College of Humanities & Information Changchun University of Technology, Changchun 130122, China;

2. School of Electronic Information Engineering, Changchun University of Science and Technology, Changchun 130022, China;

3. China-Russia Institute, Changchun University, Changchun 130022, China;

4. School of Electronic Engineering, Northeast Dianli University, Jilin 132012, China

Received Date: 2020-04-07

Rev Recd Date: 2020-05-21

Publish Date: 2020-09-22

Key words:

Abstract: Free space optical communication(FSO) is a communication system that realizes two-way information transmission through laser without optical fiber. It has the characteristics of wide bandwidth, good confidentiality, strong anti-interference, no frequency application, small size and low power consumption. Despite the high security of the FSO communication system, beam overflow still threatens the security of the communication. The use of chaotic encryption in communication can effectively improve the security of the system. In this paper, the differential chaos keying(DCSK) Gamma-Gamma turbulence model was used to improve the security of the FSO communication system, the expression of the system bit error rate was derived. Through the image data transmission of spatial channel, and the statistical histogram, pixel correlation and plaintext sensitivity were analyzed on the received data, the results show that the system has good security performance.

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Reference (10)

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Space optical communication systems based on differential chaotic keying and its security analysis

doi: 10.3788/IRLA20200207

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