基于调频差分混沌键控的水印方法  

Watermarking Method Based on Frequency Modulation Differential Chaos Shift Keying

作　　者：陈雪松[1] 高畅[1] 

机构地区：[1]大庆石油学院电气信息工程学院,黑龙江大庆163318

出　　处：《计算机与现代化》2010年第2期43-46,共4页Computer and Modernization

基　　金：黑龙江省教育厅科学技术研究项目(11521014)

摘　　要：研究基于调频差分混沌键控的水印加密方法。该方法使用功率恒定的信号作为载波,将混沌信号变换成具有混沌相位的恒定功率波形,减小信号提取时的误码率。在不需要建立混沌自同步机制的条件下,利用差分相关技术实现混沌数字通信的方法,采用该技术可以提高编码信息的保密性,同时可以加强编码信息的抗干扰能力。实验表明,将该技术引入到水印方法中,对待嵌入水印进行编码,可以使得信息的内容具有更好的保密性和抗干扰性。This paper researches on the watermark eneryption method based on the FM-DCSK. A carrier signal of constant power is used. A chaos signal is converted into the wave of constant power with a chaotic phase. The error rate is reduced when extrac- ring. Without the need to establish mechanisms for self-synchronization of chaotic conditions, chaotic digital communications is implemented by the differential related technology, which is used to improve the coding of confidentiality, as well as to strengthen the anti-jamming ability of encode information. The experiment shows that the embedding watermark with this technology, the bet- ter confidentiality and immunity is implemented for the content of information.

关 键 词：调频差分混沌键控 音频水印 保密通信 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]