...度调制(PAM) 扩频方式 跳时扩频(TH-SS time hopping spread spectrum ) 直接序列扩频(DS-SS direct sequence spread spectrum )超宽带脉冲波形设计超宽带脉冲波形设计脉冲波形设计原则 符合UWB 信号定义,-10dB 绝对带宽大于500MHz 或相对带宽大于20%。
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By exploring the phase information among symbols of the Direct Sequence Spread Spectrum (DS-SS) signal, a novel de-noising approach, used in low signal noise ratio environment, is presented.
利用DS - SS信号符号间相位信息,提出了一种可工作于低信噪比下的直接序列扩谱(DS - SS)信号噪声抑制方法。
Direct sequence spread spectrum (DS SS) technique has been widely used in military communications systems.
在军事通信中,直扩技术由于其诸多优点而获得了广泛的应用。
In this dissertation, the author mostly research on Direct Sequence Spread Spectrum (DS-SS), the most ordinary one within Spread Spectrum technologies.
扩频通信技术中,最常见的是直接序列扩频通信(DS - SS)系统,本论文所研究的就是这一类通信系统。
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