Algorithm of FM demodulation based on the software radio

The basic idea of software defined radio is making broadband A / D and D / A and the antenna as close as possible,and use the software to achieve radio function in an open,modular universal hardware platform as much as possible.The software radio has become one of the key technologies in mobile communication.This article uses the baseband signal processing algorithm,combined with the related theory in software radio receiver,carried out simulation about modulation recognition and demodulation algorithm,which illustrates function of various of demodulation module,and the system is validated by scientific and feasibility.