基于Multisim 10的通信系统眼图仿真  

The Simulation of Communication Systems in the Eye Diagram Based on Multisim 10 Simulation Platform

作　　者：丁勇[1] 

机构地区：[1]南京信息职业技术学院信息服务学院,南京210023

出　　处：《信息化研究》2015年第6期82-86,共5页INFORMATIZATION RESEARCH

摘　　要：在实际通信系统中,眼图是评估系统性能、决定最佳判决电平和最佳抽样时刻以及指导系统调整的一种重要工具。在实际的学习中,由于眼图理论的抽象,理解起来是很困难的。传统眼图的实验,通常使用matlab软件,机械地输入指定的命令,眼图就出现了,而对于通信系统中眼图产生的原理以及电路参数对眼图的影响了解甚少,因此对于改善传输系统性能的方法也就不甚了解。文章基于Multisim 10电路仿真软件做出了通信系统中眼图的仿真,通过给定不同带宽的低通滤波器加白噪声,从而大体得出最佳判决电平与最佳抽样时刻。In the actual communication system,system performance evaluation,the eye diagram is to determine the optimal decision level and the best sampling time,and adjust the guidance system is an important tool.But in practical learning,because of the abstract nature of the eye theory,it is difficult to understand,but the traditional eye experiment,usually using MATLAB software,the mechanical input specified command,the eye appears.But the principle of communication system in the eye,and the influence of parameters of circuit eye are poorly understood.Therefore,the method to improve the transmission performance of the system is not quite understood.The Multisim 10 circuit simulation software based on the eye to make the simulation of the communication system,through the low pass filter is given different bandwidth white noise,which generally work out the optimum decision level and the best sampling time.

关 键 词：眼图 MULTISIM 10仿真 硬件描述语言(VHDL) 滤波器 功率谱密度 

分 类 号：TN914[电子电信—通信与信息系统]