Research And Implementation Of Key Technique Of Demodulation In Satellite Communication System

This project is to research on the key technique of demodulation in satellite communication system. This paper introduces some frequently used key technique of base band demodulation in satellite communication system, analyzes their principle and performance mathematically, discusses their application, implementation and optimization practically, and illustrates their usage by analyzing some real structures of demodulation in satellite communication system.The key technique discussed in this paper includes CIC filter, conversion from Cartesian coordinates to polar coordinates with CORDIC algorithm, NCO with DDFS, loop filter with its tracking parameters and acquisition parameters, code synchronization, carrier synchronization and etc.The key technique comes from two instances discussed in this thesis.