Secondly, the coefficients quantization - based image watermarking using spread spectrum communication was discussed.

其次, 讨论了利用扩频通信模型的基于系数量化的图像水印算法.

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Pseudo random sequence has broad applications in stream cipher , channel coding, and spread spectrum communication.

伪随机序列在流密码 、 信道编码 、 频通信等领域有着广泛的应用.

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Spread spectrum communication uses much larger bandwidth than original information using pseudo noise ( PN ) sequences .

扩频通信采用伪随机 编码调制,使用比信息数据大得多的带宽.

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Analysis shows that this MSK spread spectrum communication system in the underwater acoustic channel is feasible.

分析表明,采用相位比较差分解调和滑动相关捕获的MSK扩频系统 在水下声信道中的应用是可行的.

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Spread Spectrum Communication with character of strong anti - jamming and well covered which can implement CDMA technique.

扩频通信具有 抗干扰能力强 、隐蔽性好、可以实现码分多址、抗衰落、抗多径干扰等许多独特的性能.

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A new quasi - orthogonal hybrid spread spectrum communication algorithm and its realized scheme are proposed.

针对无线扩频通信频带利用率有限的问题,提出了一种准正交混合扩频通信算法及其实现方案.

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