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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The spread spectrum ( SS ) signal modulated by pseudo noise code is typically cyclostationary ( CS ) signal.

扩频信号 是被伪 随机码 调制的周期信号,因此它应被建模为循环平稳随机信号.

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