Design and implementation of 2FSK modem on FPGA and MATLAB
He Wei;School of Electronic Engineering, Xi'an Shiyou University;
This paper introduces the continuous phase 2FSK demodulation principle. Key method is used to design the DDS wave generator which can output different frequency sine wave by detecting pulse code. Designing FIR filter by the window function of MATLAB, the influence of different window functions and quantization bits on the frequency response curve of FIR filter is studied to calculate the coefficients of FIR filter and import FIR IP core, realizing the full parallel distributed structure low-pass and band-pass filter. Finally implement the 2FSK modulation and the non-coherent demodulation based on FPGA by using Verilog HDL language. By Modelsim simulation, the waveform of noncoherent demodulation is obtained. The simulation and experimental results show that the phase continuous 2FSK modem based on FPGA and MATLAB is correct and has high practicability and reliability.
【CateGory Index】： TN915.05