Abstract
In today's society where the Internet and information networks are so developed, the need for confidentiality of information transmission is more and more important, no matter whether it is in the business sector, the military, medical care, or individuals. In this paper analyses the basic working principles of four different communication systems, namely, the high-dimensional chaotic laser communication system, the chaotic synchronous confidential communication system based on the reserve pool calculation, the ultra-chaotic system based on the amnesia, and the communication system based on the Duffing vibrator array, from encrypting the signal and sending it from the transmitting end to receiving, demodulating and converting the encrypted signal from the receiving end. The differences between the different parts of each system are compared. Finally, it is found that today's communication systems have the disadvantages of poor confidentiality, weak anti-jamming, high cost, low accuracy, etc., respectively, and suggestions for modification are made. Finally, the future development of communication is looked forward to
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