求翻译：可以看到，与一般的扩频波形(直接序列扩频DSSS或跳频扩频FHSS)不同，UWB波形的扩频带宽是直接产生的，即单个比特未经扩频序列如PN码调制，本质上是时域概念。另外，DSSS、FHSS波形是恒包络，扩频波形占空比为100%，即峰平比相等，在UWB中，脉冲持续时间相对脉冲间隔很短，波形的占空比为一个小的百分数，峰平比很大。是什么意思？

You can see, the spread spectrum waveform (direct sequence spread spectrum the dsss or frequency hopping spread spectrum FHSS), the uwb waveform of the spread spectrum bandwidth is directly generated by a single bit without spreading sequence, such as pn-code modulation, in essence, is the concept o

As you can see a general spread-spectrum waveforms (Direct Sequence Spread Spectrum DSSS or Frequency Hopping Spread Spectrum FHSS UWB wave), the bandwidth is directly derived from the individual bits, i.e. without a Spread Spectrum sequence such as PN code modulation is, in essence, time-domain con

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You can see, and generally spread spectrum waveform (DSSS or direct sequence spread spectrum frequency hopping spread spectrum FHSS), spread spectrum bandwidth UWB waveforms are generated directly, that is, a single bit without a spread-spectrum sequences such as PN code modulated, is essentially a

正在翻译，请等待...