A kind of oofdm encryption system based on chaotic sequence map
A chaotic sequence and encryption system technology, applied in the direction of secure communication, transmission system, and optical transmission system through chaotic signals, can solve the problems of destroying the orthogonality of OFDM signals, increasing system complexity, and reducing system efficiency, and achieves encryption schemes Simple, reducing the possibility of being cracked, and highly operable
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[0039] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0040] The present invention makes full use of the characteristics of the initial value sensitivity and unpredictability of the chaotic sequence and the XOR operation of high-speed digital processing to realize the double encryption of the signal, which can improve the security of the OOFDM system encryption to a certain extent and reduce the risk of information leakage. Risk; in addition, encrypting the QAM mapping part of OOFDM, the algorithm is simple, and the hardware is easy to implement.
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