毕 业 设 计 论 文设计/论文题目: 2FSK 数字调制通信系统毕业设计 班 级: 姓 名: 指引老师: 完毕时间: .12 2FSK 数字调制通信系统设计摘要调制解调器是通信系统中核心设备,其性能好坏直接关系到整个系统性能。本次设计 FSK 调制系统具备抗干扰、抗噪声、抗衰减性能较强、技术复杂限度比较低、成本低等诸多长处,因而广泛应用与实际电路中。在中低速数据传播通信系统中得到了较为广泛应用。此外,许多集成芯片里也用到了 FSK 调制技术。本次设计 FSK 电路可广泛用于计算机网络、办公自动化、远程自控系统及移频通信中。当代通信系统规定通信距离远、通信容量大、传播质量好。作为其核心技术之一调制解调技术始终是人们讨论一种重要方向。从最早模仿调幅调频技术日臻完善,到当前数字调制技术广泛运用,使得信息传播更为有效和可靠.。采纳 FSK 调制方式重要长处是:①无需载波恢复,大大减少了系统复杂度。②对幅度非线性抗干扰能力强。由于 FSK 信号为恒包络信号,其信息完全包括在信号过零点上,因此比起调幅信号,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,简朴易懂。核心字: VHDL 语言;2FSK 调制;2FSK 解调;MFSK 调制2FSK Digital modems Communication System DesignSummary Modem is the key equipment of communications system;its performance will have a direct effect on the performance of the whole system. The design of the FSK modulation system has advantages such as anti-jamming,anti-noise,high-attenuation performance,relatively low technical complexity and low cost ,thus widely applying in actual circuit. It has been more widely used in the low-speed data transmission communication system. In addition , many integrated chip also used the FSK modulation technique.The design of the FSK circuit can be widely used in computer networking , office automation , remote-controlled system and the frequency shift in communication. Modern communication systems require far distance communications , telecommunications capacity,and transmission quality. As one of the key technologies...