Digital Modulation and FPGA Implementation of MSK Based on SDR

With the rapid development of communication technology, the development of new communication systems and standards has been continuously raised, the demand for communication multimedia traffic has increased dramatically and the communication spectrum resources are becoming scarce. The minimum frequency shift keying (MSK) modulation is one of the constant envelope modulation schemes, which can produce modulated signals with constant envelope and phase continuity. In this paper, the related software radio technology is used to carry on the related research to the MSK, introduces the transmitter part and the receiver part of the digital modulation of the MSK and the related key technology. The MSK signal is generated by Matlab and the related principle is simulated. Finally, the digital modulation and demodulation of MSK is realized in FPGA design.