Secondly, the system physical layer's key technology—Direct Sequence Spread Spectrum (DSSS) is described.
在详细说明了扩频通信的理论基础之后，对直接序列扩频技术及系统作了介绍。
The difference between UWB and the traditional direct sequence spread spectrum technology was analyzed, and the simulation models of TH-IR and DS-IR systems were installed.
首先分析了超宽带技术与传统的直接序列扩频技术的区别，然后建立了TH -IR和DS - IR超宽带系统的仿真模型，得到两种IR系统在多种干扰条件下的误码率性能。
The orthogonal frequency division and the direct sequence spread spectrum technology are effective methods.
正交频分复用和直接序列扩频技术是解决该问题的有效手段。
The orthogonal frequency division and the direct sequence spread spectrum technology are effective methods.
正交频分复用和直接序列扩频技术是解决该问题的有效手段。
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