Security-level-controllable carrier, constellation and mode multi-chaos masking light transmission method

Abstract

The invention provides a security-level-controllable carrier, constellation and mode multi-chaos masking light transmission method, which comprises the following steps of: performing serial-parallel change on data, and mapping the data to each constellation point; masking the three-dimensional constellation diagram by using a Chua's chaotic model, so that the three-dimensional constellation pointsare converted into a sphere; then, the Lorentz model being used for masking the subcarrier and the orthogonal mode, meanwhile, parameters of the Lorentz model and the Chua's circuit model being modulated, and therefore security level controllability of chaotic encryption being achieved. At the receiving end, an original Chua's circuit and an original Lorentz model secret key are used for decrypting the chaotic constellation diagram. The signals decrpted by the receiving end are compared with the transmitting end, thus to calculate the system error ratio, thereby judging the system performance. By the control over the parameters a chaos model, encryption of one dimension or multiple dimensions can be conducted, thus security classification can be achieved. According to different conditions, high-security transmission is realized at the lowest encryption cost.

Description

technical field [0001] The invention relates to the technical field of optical transmission and communication, in particular to a dense-level controllable carrier, constellation and mode multi-chaos concealment optical transmission method. Background technique [0002] With the rapid development of 5G, 4K video, cloud computing and other services, China is at the forefront of 5G. Therefore, China's communication field will be oriented to a wider space, more new space needs to be expanded, and more new services will be developed. The huge demand for information capacity continues to drive the development of long-distance backbone networks and short-distance optical transmission systems, and the expansion of optical communication systems is an eternal topic. Therefore, multi-carrier technology has received more and more attention in optical networks. Multi-carrier technology can provide larger capacity and flexible bandwidth. Multi-carrier techniques such as Optical Orthogo...

AI Technical Summary

Problems solved by technology

Although this chaotic encryption method has high security, its high complexity often leads to long processing time and increased bit error rate.

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