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Title: ppm Download
 Description: Modulated by the PPM UWB signal by Gaussian white noise channel of system simulation, given the time and frequency domain map
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 To Search: uwb ppm ppm
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经PPM调制的超宽带信号经高斯白噪声信道的系统仿真给出了时域和频域图
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..................................................................\超宽带信号是通过传输持续时间极短的窄脉冲(通常脉冲的宽度在纳秒量级)而产生信号的调制方式是通过脉冲的位置或幅度的变化来达到的.也就是说时域极窄的脉冲在频域则有较宽的频谱..txt

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