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Communication system based on ultra-wideband spread spectrum chaos carrier and communication method

A communication system and ultra-wideband technology, which is applied in the field of communication systems based on ultra-wideband spread spectrum chaotic carrier, can solve the problem of low confidentiality, and achieve the effects of high confidentiality, super large effective bandwidth, and improved spectrum flatness

Active Publication Date: 2017-10-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of low confidentiality existing in the prior art

Method used

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  • Communication system based on ultra-wideband spread spectrum chaos carrier and communication method
  • Communication system based on ultra-wideband spread spectrum chaos carrier and communication method
  • Communication system based on ultra-wideband spread spectrum chaos carrier and communication method

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Embodiment 1

[0069] This embodiment provides a communication system based on ultra-wideband spread spectrum chaotic carrier, such as figure 1 , the system includes: a sending device, a receiving device, the sending device and the receiving device are connected through an optical fiber channel; the receiving device includes a spectrum compression module, a first optical coupler OC1 connected to the spectrum compression module, the first The output of the optical coupler OC1 is two paths, one path is directly connected to the chaos synchronization unit, and the other path is connected to the first connection end of the chaos synchronization unit through a photoelectric conversion unit; A coupler, the other input end of the second optical coupler OC2 is connected to the optical isolator OI, and the corresponding position of the second optical coupler OC2 is provided with a mirror M;

[0070] The sending device includes a chaotic external cavity laser, an MZ modulator connected to the chaotic ...

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Abstract

The invention relates to a communication system based on ultra-wideband spread spectrum chaos carrier and a communication method and mainly solves the technical problem of low confidentiality in the existing technology. The problem is well solved through adoption of a technical scheme as follows: a receiving device comprises a frequency spectrum compression module and a first optical coupler OC1 connected to the frequency spectrum compression module, wherein the output of the first optical coupler OC1 is divided into two paths, one path is directly connected to a chaos synchronization unit and the other path is connected to a first connection end of the chaos synchronization unit through a photovoltaic conversion unit; a sending device comprises a chaos external cavity laser, an MZ modulator connected to the chaos external cavity laser and a spread spectrum module connected to the MZ modulator; and parameters of the frequency spectrum compression module and the spread spectrum module are opposite, and the technical scheme can be used for a communication system of the chaos carrier.

Description

technical field [0001] The invention relates to the technical field of chaotic communication, in particular to a communication system and a communication method based on an ultra-wideband spread spectrum chaotic carrier. Background technique [0002] In recent years, with the rapid development of the network society, network capacity and network users have shown explosive growth. Chaotic communication technology has attracted extensive attention due to its efficient physical layer independence, but because the spectral energy of its chaotic laser signal is concentrated near the relaxation oscillation frequency of the laser, the bandwidth is limited; while the equivalent method of chaotic synchronous injection can The effective decoding of information seriously affects the security performance of the communication system based on chaotic laser signals. Therefore, it is very important to provide a chaotic letter system with strong confidentiality. [0003] Due to the high in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04B10/85H04B10/50H04B10/60
CPCH04B10/503H04B10/60H04B10/85H04L9/001
Inventor 江宁王超李桂兰林书庆邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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