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频移键控(FSK)是用不同频率的载波来传递数字信号,并用数字基带信号控制载波信号的频率。通过对FPGA芯片的下载、仿真进行研究,给出了用VHDL语言设计出调制与解调部分的总模块。仿真通过后,形成顶层文件完成系统的整体设计,最后在FPGA芯片上进行下载和仿真,实现了发端和收端的全数字FSK通信,验证了设计的正确性,说明用大规模集成电路设计的FSK通信系统在传输效率、误码率以及抗干扰性等方面有较好的特性。
Frequency shift keying (FSK) is the use of different frequency carrier to transmit digital signals and digital baseband signals to control the carrier signal frequency. Through the study of FPGA chip download and emulation, the general module of modulation and demodulation part is given by using VHDL language. After the simulation is completed, the top-level file is formed to complete the overall design of the system, and finally the FPGA chip is downloaded and emulated to realize the all-digital FSK communication between the originator and the receiver. The correctness of the design is verified, and the design of the FSK Communication system has good characteristics in transmission efficiency, bit error rate and anti-interference.