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Communication digital watermark embedding method and communication digital watermark extracting method

A technology for watermark embedding and watermark extraction, which is applied in digital transmission systems, secure communication devices, and error prevention. , the effect of resisting common signal processing attacks

Active Publication Date: 2014-04-09
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Digital watermarking technology has broad prospects in the field of secure communication. At present, the research on it in secure communication has gradually increased, but it is far from mature, and the current research is concentrated on image audio and other multimedia aspects. In the communication modulation signal There is not much research in the field

Method used

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  • Communication digital watermark embedding method and communication digital watermark extracting method
  • Communication digital watermark embedding method and communication digital watermark extracting method
  • Communication digital watermark embedding method and communication digital watermark extracting method

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and exemplary embodiments. It should be understood that the exemplary embodiments described here are only used to explain the present invention, and are not intended to limit the applicable scope of the present invention.

[0028] The communication digital watermarking method provided by the present invention includes three parts: watermark embedding, signal transmission and watermark extraction, and its flow chart can be found in figure 1 , which are described below.

[0029] Watermark embedding methods such as figure 2 As shown, the synchronization signal and watermark information are embedded into the original signal.

[0030] The communication digital watermark embedding method of the present embodiment includes the following steps:

[0031] Step 1.1. Segment...

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Abstract

The invention discloses a digital watermarking method for communication modulation channel transmission. The method comprises three parts: watermark embedding, signal transmitting and watermark extracting. The method comprises the steps of adopting a communication digital watermark embedding method to embed watermark information into an original modulation signal, acquiring a watermark-embedded modulation signal through communication channel transmission, and adopting a communication digital watermark extracting method to extract a synchronization signal and to obtain original data and watermark information. According to the method, digital watermark information is embedded in a communication signal, and secret information can be transmitted in the communication signal by the use of digital watermarks without influencing normal communication. The methods of the invention can be used for correspondent identity verification and secret information transmission and provide a reliable guarantee for secret communication.

Description

technical field [0001] The invention relates to digital watermark technology, in particular to a digital watermark method for communication modulation channel transmission. Background technique [0002] Digital watermarking technology has developed rapidly in recent years, and its application fields have been widely expanded. The basic application fields of digital watermarking are copyright protection, hidden identification, authentication and secure communication. Digital watermarking technology has broad prospects in the field of secure communication. At present, the research on it in secure communication has gradually increased, but it is far from mature, and the current research is concentrated on image audio and other multimedia aspects. In the communication modulation signal There is not much research in this field. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to propose a method for embedd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L9/00
Inventor 徐争光黄本雄敖呈欢张颖吴若腾
Owner HUAZHONG UNIV OF SCI & TECH
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