New differential chaos shift keying communication method

A technology of differential chaotic keying and communication methods, applied in the field of communication, can solve problems such as low communication efficiency and decreased communication confidentiality, and achieve the effect of good confidentiality

Inactive Publication Date: 2017-09-29
HENAN POLYTECHNIC UNIV
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Problems solved by technology

However, due to the transmission of reference signals, the communication efficiency is low, and the reference signal is either the same as the modulated signal of the data or the opposite, and the communication confidentiality is reduced.

Method used

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  • New differential chaos shift keying communication method
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Embodiment Construction

[0021] The technical solutions of the present invention are clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] figure 1 It is a schematic diagram of the transmitting end of a new differential chaos keying communication method of the present invention, such as figure 1 As shown, the sending end of a new differential chaos keying communication method of the present invention comprises the following steps:

[0023] A. Use a chaotic signal generator to generate a reference chaotic signal c1, and the duration of each reference chaotic signal is T1;

[0024] B. c1 generates a delay d1 through a chaotic map, and o...

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Abstract

Aiming at the disadvantages that a differential chaos shift keying method is low in communication efficiency and low in security, the invention proposes a new differential chaos shift keying communication method, which comprises a transmitting end and a receiving end. Chaotic signals of the transmitting end are divided into two paths, one path is directly outputted and the other path is subjected to chaotic mapping delay and then additively delayed via the previous sending data; and when the outputted signals are multiplied by the latter sending data, then a sending signal is obtained by keying; and the receiving end is divided into an upper branch and a lower branch after being subjected to chaotic mapping delay, wherein the upper branch passes through an integrator and the upper branch passes through a delay integrator; after that, an absolute value is calculated and then the previous sending data are compared and outputted, and then the latter sending data are obtained through the result of output polarity judgment of a selector.

Description

technical field [0001] The invention belongs to the communication field, in particular to a new differential chaos keying communication method. Background technique [0002] The noise-like characteristics of chaotic carrier signals, sensitivity to initial values ​​and wide spectrum characteristics make chaotic communication develop rapidly in the field of communication with security and confidentiality requirements, and become one of the important research contents in the field of information security. It has good application value in civilian and military use. The structure of differential chaotic keying method has the advantages of simple circuit and easy implementation. However, since the reference signal is sent, the communication efficiency is low, and the reference signal is either the same or opposite to the signal modulated by the data, and the communication confidentiality is reduced. [0003] A new differential chaotic keying communication method shown in the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04L27/233H04L9/00
CPCH04L9/001H04L27/001H04L27/2331
Inventor 李辉苏玉娜王英杰叶小涛徐坚
Owner HENAN POLYTECHNIC UNIV
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