Satellite communication network & basic of signal processing

Hello experts,

For my work task, I need to study the basics of satellite communication, including signal processing, differences from terrestrial networks, RAN architecture, etc. I am looking for good references for that.

Does anyone here work in the satellite industry or conduct research in satellite communication networks? Could you please suggest a few books or maybe online courses where I can learn the basics?

P.S. I don’t have any degree in engineering science, but I have some experience in signal processing.