3.1概述 一、模拟调制:用来自信源的基带模拟信号去调制某载波 二、载波:确知的周期性波形一余弦波:

《通信原理》课程教学资源（技术资料）华为公司——电信支撑网

2.1信号的类型 2.1.1确知信号和随机信号 一、什么是确知信号 二、什么是随机信号

Introduction Basic signal properties(dc, rms, dBm. and power) Fourier transform and spectra Linear systems and linear distortion Bandlimited signal and sampling Discrete Fourier transform · Bandwidth of signal

Introduction Basic signal properties(dc, rms, dBm, and power) Fourier transform and spectra Linear systems and linear distortion Bandlimited signal and sampling Discrete Fourier transform Bandwidth of signal

Introduction (chapter objectives) Bit error rate for binary systems (unipolar, polar, bipolar, ooK, BPsK, FsK, and MSK Output signal-to-noise ratio for analog systemS(AM, SSB, PM, and Fm)

《通信原理与实验 Principles and Experiments of Communications》课程参考书：John G. Proakis Masoud Salehi《Fundamentals of Communication Systems》（Second Edition）

《通信原理》课程教学资源（教学大纲）Principles of Communication（C）

《通信原理》课程教学资源（教学大纲）Principles of Communication（B）

8.1差错控制编码的基本概念 8.1.1差错控制方式 图8-1差错控制系统