Frequency shift keying (FSK) uses carriers of different frequencies to transmit digital signals, and uses digital baseband signals to control the frequency of the carrier signal. The author proposes an FPGA implementation of the MFSK modulator based on DDS (Digital Direct Synthesizer) technology, and uses the advantages of the DSP development tool DSP Builder to combine VHDL text with Simulink model diagrams for FPGA design and simulation. The simulation results verify the correctness and feasibility of the design.
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