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Physical layer steganography transmission method and physical layer steganography transmission system

A transmission method and physical layer technology, applied in the field of physical layer steganographic transmission methods and systems, can solve problems such as the inability to guarantee the security of the steganographic method and the suspicion of the monitoring terminal.

Active Publication Date: 2016-06-22
山东首景辉光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There are many communication quality factors that affect normal communication and covert communication, such as changes in the wireless channel, the encoding method used by the sending end, the signal modulation method, and the length of the hidden signal. , the security of the steganographic method cannot be guaranteed

Method used

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  • Physical layer steganography transmission method and physical layer steganography transmission system

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, 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.

[0055] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than thos...

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Abstract

An embodiment of the invention discloses a physical layer steganography transmission method and a physical layer steganography transmission system, wherein the physical layer steganography transmission method and the physical layer steganography transmission system belong to the field of communication technology. According to the physical layer steganography transmission method, in each transmission of a steganography signal, after a signal transmitting end performs channel coding on a carrier signal, the upper limit of a steganography capacity is determined; furthermore a random sequence is generated for indicating the embedding position of a first hidden signal in the coded carrier signal; then the first hidden signal is embedded into the carrier signal according to the generated random sequence for obtaining the steganography signal, wherein the length of the first hidden signal is not larger than the upper limit of the steganography capacity; and finally the transmitting end sets a transmission identification in the steganography signal and performs modulation for transmitting out. Therefore the transmitting end dynamically and adaptively adjusts the maximal length of the first hidden signal which is embedded into the carrier signal each time. A to-be-transmitted second hidden signal with relatively long length can be transmitted in multiple times so that the steganography signal cannot be easily doubted by an adverse monitoring end, thereby improving safety in transmission of the hidden signal.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a physical layer steganographic transmission method and system. Background technique [0002] Through the steganographic technology of the physical layer, the sending end can transmit the hidden signal to the receiving end when the listening end can obtain part of the information (such as the receiving signal and channel coding method) with the help of the carrier signal, the steganographic key and channel coding. And in this process, the listening end will not suspect the existence of the hidden signal / channel, so that the hidden signal will not be attacked and modified, ensuring the security and robustness of the steganographic signal transmission process. [0003] There are many communication quality factors that affect normal communication and covert communication, such as changes in the wireless channel, the encoding method used by the sending end, the signal modulati...

Claims

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Application Information

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IPC IPC(8): H04L9/06H04L9/08H04L29/06
CPCH04L9/0656H04L9/0819H04L9/0869H04L63/0428H04L9/40
Inventor 谢宁张莉黄继武王晖
Owner 山东首景辉光电科技有限公司
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