A Physical Layer Chaos Encrypted Optical Transmission Method Based on Generative Adversarial Networks
A technology of chaotic encryption and optical transmission, which is applied in the direction of secure communication, transmission system, and digital transmission system through chaotic signals, can solve the problems that the system cannot meet the complexity of encryption, the system does not have confidentiality, etc. Enhanced Security, Increased Complexity Effects
Active Publication Date: 2021-06-29
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology
However, in previous studies, chaotic systems usually use logistic mapping. With the improvement of communication technology, the system cannot meet the complexity of encryption. If the periodic characteristics of the chaotic system are obtained, the entire system will not have confidentiality.
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[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments.
[0051] A physical layer chaotic encrypted optical transmission method based on generative confrontation network, such as figure 1 As shown, the specific steps are as follows:
[0052] Step 1, in the perturbation sequence generation module, the chaotic system is used to generate the initial key space for training the GAN network, and the generation network with encryption characteristics is obtained through multiple iterations of the discriminator and the generator, and the generation network is used for generate a perturbation sequence;
[0053] Step 2, the sent binary bit data stream is converted into a binary label sequence through serial-to-parallel conversion, and then mapped to the complex constellation point symbol sequence of QAM through the modulator;
[0054] Step 3, using the perturbation sequence to perturb the phase of t...
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The invention is a physical layer chaotic encrypted optical transmission method based on generating confrontation network, and the method converts the sent binary bit data stream into a binary label sequence. Next, it is mapped to a QAM complex constellation point symbol sequence through a modulator. Then the obtained symbol sequence is subjected to two times of perturbation encryption, and then the time-domain signal obtained by IFFT operation is added with a cyclic prefix, converted into an analog electrical signal by a digital-to-analog converter, and then coupled with an optical signal for transmission. After being transmitted through the optical fiber channel, at the receiving end, the optical signal received by the optical receiver is converted into an electrical signal, and the inverse process of the transmitting end is used for demodulation and other processing to restore the original information. This method uses the chaotic system based on the GAN network to generate a disturbance sequence to encrypt the phase of the constellation point and the position of the subcarrier of the constellation diagram, which increases the complexity of the encryption system and accelerates the iterative process of information encryption, enhancing the security of the communication system. .
Description
technical field [0001] The invention relates to the technical field of signal encryption, in particular to a physical layer chaos encryption optical transmission method based on a generated confrontation network. Background technique [0002] The rapid growth of Internet access services has gradually promoted people's demand for broadband access. Optical access network technology is one of the key technologies and is currently being deployed in large quantities in some countries. Considering that transmission optical fiber and central office equipment resources can be shared by everyone at the same time, when deploying optical access, due to the advantages of high frequency spectrum utilization and strong anti-multipath weakening ability of Orthogonal Frequency Division Multiplexing (OFDM) technology, OFDM-based Passive optical networks (PONs) have great advantages. Early PON deployments were based on the B-PON system standardized in the ITU-T G983 series. The Ethernet PON...
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IPC IPC(8): H04L9/00H04L27/34
CPCH04L9/001H04L27/34
Inventor 刘博忻向军任建新毛雅亚朱筱嵘王瑞春沈磊吴泳锋孙婷婷赵立龙
Owner NANJING UNIV OF INFORMATION SCI & TECH