Dear Sajor, I think there is not a ready made software that can be used to directly give the interference between the satellite earth stations and the mobile transmissions. As software suit i can propose for you to use matlab to solve this problem. You can model the system and its form its signals and then study the interference between the two communication systems. Bu as i know there is frequency allocation and assignment such that the interference is avoided between the two systems. The bands assigned for the satellites is different from the bands assigned for the mobile communications. Best wishes