搜索 - 科创

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有点厉害的这款图传是使用一家名叫迪威玛的西安的芯片公司的方案，他主要的工作就是这颗DM5680的芯片这颗芯片连接AD9361，可以配置成图传发射端或者图传接收端，发射端芯片的作用是接收摄像头的数据，然后调制成OFDM

均衡器阶数做高了一是难以收敛，二是资源开销跟fft做ofdm解调也差不多了。ofdm对同步精度、相位噪声极为敏感，远比单载波要求高，这就是wifi图传与专业cofdm图传的区别。

第三部分讨论扩频通信技术，包括被广泛应用的直接序列扩频通信(DSSS)，和正交频分复用(OFDM)射频信号被用来传递信息，信息有可能是音频，数据或者其他格式，该信息被调制(modulate)到载波信号上

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