Design of PPM modulation and demodulation system based on FPGA

Abstract

For the test and transmission of rotating parts parameters, a design of a PPM modulation and demodulation system based on FPGA infrared data transmission is proposed, and a CRC check is added in the data transmission process, which increases the accuracy of the data transmission process. This design uses Altera(Intel)′s Cyclone10 series 10CL016YU256C8 chip, which has the characteristics of high speed, high bandwidth, high capacity, etc., suitable for high-speed data communication. Through the Quartus II development platform, it uses Verilog HDL hardware description language to write the corresponding modulation, demodulation and CRC verification programs. The paper introduces the algorithm of 4PPM modulation and demodulation, as well as the algorithm of CRC-CCITT check code, and carries on the timing simulation to the system through Modelsim. The simulation result verifies the correctness of the design.

Keywords

• ppm modulation and demodulation
• crc check
• fpga
• verilog hdl