一、实验目的.............................................................................................................1二、实验题目.............................................................................................................1三、实验内容.............................................................................................................13.1傅里叶变换与傅里叶反变换...........................................................................13.2题目一：正弦信号波形及频谱.......................................................................23.2.1仿真原理及思路....................................................................................23.2.2程序流程图............................................................................................33.2.3仿真程序及运行结果............................................................................33.2.4实验结果分析........................................................................................53.3题目二：单极性归零（RZ）波形及其功率谱..............................................53.3.1仿真原理及思路....................................................................................53.3.2程序流程图............................................................................................63.3.3仿真程序及运行结果............................................................................63.3.4实验结果分析........................................................................................83.4题目三：升余弦滚降波形的眼图及其功率谱...............................................83.4.1仿真原理及思路....................................................................................83.4.2程序流程图............................................................................................83.4.3仿真程序及运行结果............................................................................83.4.4实验结果分析：..................................................................................103.5题目四：完成PCM编码及解码的仿真.......................................................113.5.1仿真原理及思路..................................................................................113.5.2程序流程图..........................................................................................123.5.3仿真程序及运行结果..........................................................................123.5.4实验结果分析......................................................................................153.6附加题一：最佳基带系统的Pe~Eb\No曲线，升余弦滚降系数a=0.5，取样值的偏差是Ts/4..................................................................................................163.6.1仿真原理及思路..................................................................................163.6.2程序流程图..........................................................................................163.6.3仿真程序及运行结果..........................................................................163.6.4实验结果分析......................................................................................183.7附加题二：试作出Pe～Eb/No曲线。升余弦滚降系数a＝0.5，取样时间无偏差，但信道是多径信道，C(f)=|1-0.5-j2ft|,t=Ts/2............................................183.7.1仿真原理及思路.......................................................