基于FPGA的AM数字调制解调设计验证与分析  

Design of AM Digital Modulation and Demodulation Based on FPGA

作　　者：李国诚 黄明[1] 丁照雨 徐泽琨 曹愿栋 LI Guo-cheng;HUANG Ming;DING Zhao-Yu;XU Ze-kun;CAO Yuan-dong(North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学,北京100144

出　　处：《工业技术创新》2019年第1期36-42,共7页Industrial Technology Innovation

基　　金：北方工业大学电子信息工程学院电子系;北京市大学生科学研究与创业行动计划项目资助与支持

摘　　要：AM和正交调制解调是通信领域应用最广泛的基础技术,由此提出了一种简单基于FPGA数字实现AM和正交调制解调的方法,具有较好的抗噪声性能及较强的抗频偏能力,并推导了所允许的最大载频偏差(Δf_(max)),为实际应用提供了理论依据;该调制解调方法实现简单,通用性强,并有较好的可靠性、抗噪声性及抗载频适配能力。利用Matlab仿真软件建立了可视化的AM通信系统模型,介绍了AM系统的工作原理、AM信号的产生和解调方法,设计电路参数和基本数据对实际应用有一定的参考意义。AM and quadrature modulation and demodulation are the most extensive basic technologies in the field of communication.Therefore,proposed is a simple method based on FPGA digital implementation of AM and quadrature modulation and demodulation,which has better anti-noise performance and strong resistance.The frequency offset capability and the maximum carrier frequency deviation(Δfmax)allowed are derived,which provides a theoretical basis for practical applications;the modulation and demodulation method is simple to implement,has high versatility,and has good reliability,noise resistance and antiloading.The AM communication system model is established by using Matlab.The working principle of AM system,the generation and demodulation method of AM signal are introduced.The design circuit parameters and basic data have certain reference significance for the actual circuit design.

关 键 词：AM调制解调 正交解调 MATLAB FPGA 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]