| 扩频CDMA水印性能分析及其应用研究 |
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| 引用本文： | 朱岩,杨永田. 扩频CDMA水印性能分析及其应用研究[J]. 哈尔滨工业大学学报, 2006, 38(12): 2116-2120 |
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| 作者姓名： | 朱岩 杨永田 |
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| 作者单位： | 北京大学,计算机科学技术研究所,北京,100871;哈尔滨工程大学,计算机科学与技术学院,哈尔滨,150001 |
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| 摘 要： | 通过对扩频码分多址(CDMA)水印模型的编码及检测方法进行理论分析,阐述了信息嵌入量、扩频码长、检测错误率、信道容量等指标之间存在的制约关系,并用试验进行比较和验证.理论结果与多小波变换域内的实验结果表明所提出的模型和算法既有较高的嵌入容量,又具有较强的鲁棒性和安全性.
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| 关 键 词： | 数字水印 扩频水印 CDMA 多小波变换 |
| 文章编号： | 0367-6234(2006)12-2116-05 |
| 收稿时间： | 2004-10-18 |
| 修稿时间： | 2004-10-18 |
Performance analysis of spread spectrum CDMA watermarking and applied research |
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| ZHU Yan,YANG Yong-Tian. Performance analysis of spread spectrum CDMA watermarking and applied research[J]. Journal of Harbin Institute of Technology, 2006, 38(12): 2116-2120 |
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| Authors: | ZHU Yan YANG Yong-Tian |
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| Affiliation: | 1. Institute of Computer Science and Technology, Peking University, Beijing 100871 ;2. Computer Science and Technology College, Harbin Engineering University, Harbin 150001 |
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| Abstract: | This paper analyzes the encoding and detection methods in spread spectrum Code Division Multiple Access(CDMA) watermarking model,in which the trade-off relation is clearly illuminated among embedded information number,code length,detection error probability and channel capability.And then these conclusions are compared and verified with experimentations.The theoretical results and the empirical data obtained in multiwavelet domain demonstrate that the proposed model and algorithm provide higher embedding capacity as well as more robust and secure against attack. |
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| Keywords: | Digital watermarking Spread spectrum watermarking Code Division Multiple Access Multiwavelet transform |
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