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Information hiding communication method and device of multi-carrier modulation

A multi-carrier modulation and information hiding technology, which is applied in the field of multi-carrier modulation information hiding communication devices, can solve the problems of invisibility and robustness degradation, achieve invisibility and robustness, increase capacity, and maintain The effect of robustness

Active Publication Date: 2019-04-02
GUANGDONG POLYTECHNIC NORMAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the case of ensuring sufficient capacity in the existing information hiding technology, its invisibility and robustness usually decline

Method used

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  • Information hiding communication method and device of multi-carrier modulation
  • Information hiding communication method and device of multi-carrier modulation
  • Information hiding communication method and device of multi-carrier modulation

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Embodiment Construction

[0039] Below, in conjunction with the accompanying drawings and specific implementation methods, the present invention will be further described by taking digital watermarking as an example:

[0040] refer to figure 1 and figure 2 , a multi-carrier modulation information hiding communication method described in this embodiment, comprising the following steps:

[0041] Step S001: Obtain the source signal, the key of the information hiding communication and the hidden data, and perform probability density conditional statistical processing on the source signal to form a random discrete sub-source signal; according to the random discrete sub-source signal and the key Statistically generate side information for hidden communication. For example: the source signal X to be sent at the sending end N Carry out conditional statistical segmentation according to the statistical characteristics of variance, so that the source signal after segmentation is X N The statistical relations...

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Abstract

The invention relates to a multi-carrier modulation information hiding communication method and a device thereof. The method comprises the following steps: acquiring a source signal, a key of information hiding communication and hidden data, and performing statistical processing on the source signal to form random-discrete sub-source signals; generating side information of hidden communication according to the random-discrete sub-source signals and the key; performing statistical processing on a transmission channel according to the variance intervals of the sub-source signals to form a plurality of parallel transmission sub-channels; allocating each sub-source signal to a corresponding transmission sub-channel respectively; computing blended data; and coding the blended data to obtain a channel coding signal for transmission. At a receiving end, the hidden data is extracted in combination with the channel coding signal, the side information and the key in order to realize secret communication of the hidden data. Through adoption of the multi-carrier modulation information hiding communication method and the device thereof provided by the invention, high invisibility and high robustness of system transmission can be ensured under the situation of large hidden data capacity.

Description

technical field [0001] The invention belongs to the technical field of information hiding communication, and in particular relates to a multi-carrier modulation information hiding communication method and a multi-carrier modulation information hiding communication device. Background technique [0002] Information hiding and its communication technology are the latest research and implementation methods of digital multimedia encryption, digital content copyright protection and digital information transmission management, and are the key research fields of multimedia information security technology. It is a multidisciplinary interdisciplinary research topic integrating mathematics, image science, information theory and computer network, covering the research and application directions of signal processing, digital communication, information security and pattern recognition and other professional technologies. At present, including digital copyright protection, digital forensic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L27/26
Inventor 赵慧民蔡君魏文国
Owner GUANGDONG POLYTECHNIC NORMAL UNIV