Suggest me some papers about direct receivers for satellite

Do you have any experience in 5-port direct receiver, as well as IQ regenating algorithm? If you have any document or link, could you send me?

Describe what you want to do in more detail.

r u designing the digital receiver?

Sorry for late reply,
I am studying to design a direct receiver for satellite, which is converted directly from the RF to baseband. At the moment, I am in the stage of finding documents related to Constant Modulus Algorithm, Blind equalizer, Decision Feedback Equalizer.

I think you should first study some papers about direct conversion receiver.

Here are the recommended:
<design consideration for direct-conversion receivers> ,Behazd Razavi
<direct conversion radio transceivers for digital communications> Asad A.Abidi