对于官方视频中提到的complex1X和complex2X的解释，还是不太理解，原文是这样说的，
In case of the complex 1x, the front end filters out the image band, whereas in the case of complex 2x, both the image band and the inband is sent out.
Since in the case of the complex 1x, the image band is filtered out, and since the image band contains the interference information, the mmWave front end can also construct this information in the form of a separate packet, which we call the chirp quality, or CQ. So the front end can be configured to receive the CQ data, as well.
请问，
1、文中提到的image band翻译成中文应该怎么理解？
2、complex1X和complex2X的区别具体是什么？
