基于FPGA的FSK调制解调器设计

摘要

数字通信系统中的数字调制与解调技术包括幅度键控（ASK）、频移键控（FSK）和相移键控（PSK），而FSK是应用较广的一种调制与解调方式。利用VHDL语言设计了2FSK调制解调器，并通过Quartus Ⅱ仿真平台进行仿真验证，最后下载到FPGA芯片EP1K30QC208-2实现了2FSK调制解调电路。仿真及实验结果表明采用此设计方案是可行的，并具有速度快、可靠性高及易于大规模集成的优点。%In the digital communication system,the digital modulation-demodulation technologies including frequency shift keying(FSK),amplitude shift keying(ASK)and phase shift keying(PSK)are adopted,among which FSK is a widely-used modulation-demodulation mode. The 2FSK modulator-demodulator was designed with VHDL language,and was verified on simu-lation platform Quartus II. The 2FSK modulator-demodulator was implemented by downloading the related programming data files to FPGA chip EP1K30QC208-2. The simulation and experiment results indicate that this design scheme is feasible,and has the advantages of fast speed,high reliability and easy to integrate in large scale.