基于FPG的FSK调制解调.doc

FPGA/CPLD课程设计报告 [FSK调制解调器设计] 学生姓名： X X 学生学号： 200XXXXXX 院 （系）： 电气信息工程学院 年级专业： 20XX级电子信息工程 指导老师： XX X XX 联系电话： XXXXXXXX 二〇XX年六月 摘 要 调制解调器是通信系统中的关键设备，其性能的好坏直接关系到整个系统的性能。经过近两个星期的的实验，我们四个组员齐心协力，利用Quartus II软件中的VHDL语言对FSK频移键控系统就行调制、解调的程序设计。终于制作出了FSK调制解调器。本次设计的FSK调制解调器的各项参数分别为载频f1=12.5MHz,f2=2MHz，调制信号f=1MHz。本次设计的FSK电路可广泛用于远程自控系统及移频通信中。采用FSK调制方式的主要优点是：①无需载波恢复，大大降低了系统复杂度。②对幅度的非线性抗干扰能力强。因为FSK信号为恒包络信号，其信息完全包含在信号的过零点上，所以比起调幅信号，其对幅度非线性抗干扰能力要强。③调制解调易用软硬件实现，简单易懂。  ABSTRACT The modem communication system is the key equipment, its performance has a direct relationship to the entire system performance. After nearly two weeks of experiments, we four members together, use Quartus II in the software of VHDL language to FSK FSK system will do modulation and demodulation of the program design. Finally made FSK modem. The design of FSK modems are: to determine the parameters of f1 = 12.5 MHz, f2 = 2 MHz, modulation signal f = 1 MHz. The design of FSK circuit can be widely used in remote control system and frequency shift in communications. Utilize FSK modulator way of main advantage is: (1) no carrier recovery, and greatly reduce the system complexity. (2) the amplitude of the nonlinear of anti-jamming ability. Because FSK signal is a constant envelope signal, the information is fully contained in the signal zero, so, the amplitude modulated signal than by nonlinear anti-interference ability is ambitious. (3) demodulation is easy to use software and hardware realization, simple and understandable. Key word VHDL Language, FSK make, FSK solution adjust  目 录 摘 要…………………………………………………………………………………Ⅰ ABSTRACT…………………………………………………………………………Ⅱ 1 ………………………………………………………………………………1 1.1 题目的意义………………………………………………………………………1 1.2 设计要求…………………………………………………………………………1 2 FSK设计的基本原理………………………………………………………………2 2.1 FSK的调制………………………………………………………………………2 2.2 FSK的解调………………………………………………………………………3 3 设计方案……………………………………………………………………………5 3.1 FSK基