Digital Spread-spectrum 数字扩频 收藏 frequency_sampling FIR digital filter 频率抽样FIR数字滤波器 收藏 .
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Digital Spread Spectrum 数字扩频 ; 和数字频谱扩展器 ; 数字频谱扩展器
digital spread spectrum receiver 数字解扩接收机
digital spread-spectrum technology 数字扩频技术
digital de spread spectrum 数字解扩
At the same time, this algorithm takes good use of digital spread spectrum technology to embed the watermarking repeatedly.
同时，在嵌入水印时利用了数字扩频技术，对水印进行多重嵌入。
参考来源 - 基于数字水印技术的数字作品版权保护研究·2,447,543篇论文数据，部分数据来源于NoteExpress
It mainly contains the digital modulate system, the SS communication theory and the direct sequence spread spectrum (DSSS) system.
主要是数字调制系统、扩展频谱通信原理和直接序列扩频系统等内容。
The relation between the digital watermarking and spread-spectrum was analyzed at first, A spread-spectrum adaptive digital watermarking scheme based on the wavelet transform was proposed.
在分析了自适应小波变换和扩频特性关系的基础上，提出一种基于小波变换的扩频数字水印算法。
Then digital matched filter (DMF), which is used to synchronize spread spectrum code, especially the multi-rate sampling in DMF is studied.
然后探讨了用于扩频码同步的数字匹配滤波器（DMF），着重分析了DMF的多倍码速率采样问题；
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