通信系统建模与仿真（基于MWORKS）

本书以MWORKS 2023b为平台，以MWORKS.Syslab与MWORKS.Sysplore通信系统建模与仿真工程案例为背景，通过专业技术与大量实例相结合的形式，加深读者对通信系统原理的理解。 本书共7章，内容包括：绪论、MWORKS科学计算与系统建模仿真基础、通信系统的信源编码、通信系统的信道编码、数字信号基带传输、通信系统的载波调制、通信系统的应用开发实践案例。每章正文之前有内容提要，每章后附有本章小结和习题，以满足教学和自学的需要。 本书可作为高等学校通信、电子信息、计算机等专业本科生和研究生的教学用书，也可作为相关专业科研人员、工程技术人员的参考用书

第 1 章 绪论······································································································· 1 1.1 通信的基本概念 ············································································· 2 1.1.1 通信的发展 ·········································································· 2 1.1.2 消息、信息与信号 ·································································· 3 1.2 通信系统 ······················································································ 4 1.3 通信系统模型 ················································································ 4 1.3.1 通信系统模型的组成 ······························································· 5 1.3.2 模拟通信系统模型 ·································································· 6 1.3.3 数字通信系统模型 ·································································· 7 1.4 通信系统类型 ················································································ 8 1.4.1 分类方式 ············································································· 8 1.4.2 光纤通信系统 ····································································· 10 1.4.3 卫星通信系统 ····································································· 11 1.4.4 微波通信系统 ····································································· 11 1.4.5 数据通信系统 ····································································· 12 1.4.6 多路通信系统 ····································································· 12 1.5 通信方式 ···················································································· 13 1.5.1 按照系统结构分类 ································································ 13 1.5.2 按照信息传输方向与时间分类 ················································· 13 1.5.3 按照数据信号序列传输的时序分类 ··········································· 13 1.5.4 按照通信网络的形式分类 ······················································· 14 1.6 通信系统的性能评价指标································································ 14 1.6.1 有效性 ·············································································· 14 1.6.2 可靠性 ·············································································· 15 1.7 通信系统仿真 ·············································································· 15 1.7.1 通信系统仿真的概念和意义 ···················································· 15 1.7.2 通信系统仿真的一般流程 ······················································· 16 本章小结 ·························································································· 19 习题 1 ······························································································ 20 第 2 章 MWORKS 科学计算与系统建模仿真基础 ··············································· 21 2.1 MWORKS 概述 ············································································ 22 2.1.1 MWORKS 产品家族 ······························································ 22 2.1.2 MWORKS 的发展及特点 ························································ 23 2.2 科学计算与 Julia 语言 ···································································· 24 2.2.1 变量与常量 ······························································· 24 2.2.2 矩阵运算 ··········································································· 25 2.2.3 程序流程控制 ····································································· 30 2.2.4 脚本文件 ··········································································· 32 2.2.5 图形绘制 ··········································································· 33 2.3 MWORKS.Sysplorer 建模仿真 ·························································· 41 2.3.1 Modelica 语言 ····································································· 41 2.3.2 MWORKS.Sysplorer 功能与特征 ··············································· 42 2.3.3 MWORKS.Sysplorer 建模仿真的操作过程 ································· 50 2.3.4 MWORKS.Sysplorer 在通信仿真中的应用 ··································· 55 本章小结 ·························································································· 55 习题 2 ······························································································ 55 第 3 章 通信系统的信源编码 ············································································· 56 3.1 信源编译码 ················································································· 57 3.1.1 信源编码 ··········································································· 57 3.1.2 信源译码 ··········································································· 65 3.2 模拟信号的采样 ··········································································· 69 3.2.1 低通采样定理 ····································································· 69 3.2.2 带通采样定理 ····································································· 73 3.3 采样信号的量化 ··········································································· 73 3.3.1 标量量化 ··········································································· 74 3.3.2 均匀量化 ··········································································· 75 3.3.3 非均匀量化 ········································································ 76 3.4 脉冲编码调制 ·············································································· 77 3.5 差分脉冲编码调制 ········································································ 81 3.6 数字压缩编码 ·············································································· 82 3.7 图像压缩编码 ·············································································· 86 3.7.1 静止图像压缩编码 ································································ 86 3.7.2 动态图像压缩编码 ································································ 88 本章小结 ·························································································· 89 习题 3 ······························································································ 90 第 4 章 通信系统的信道编码 ·············································································· 91 4.1 信号系统 ···················································································· 92 4.1.1 傅里叶变换 ········································································ 92 4.1.2 随机过程 ·········································································· 102 4.1.3 高斯随机过程 ···································································· 106 4.1.4 信号加噪 ·········································································· 107 4.2 信道 ························································································ 115 4.2.1 前置知识 ·········································································· 115 4.2.2 信号与信道 ······································································· 119 4.2.3 信道的噪声 ······································································· 130 4.3 信道编译码技术 ·········································································· 132 4.3.1 信道编译码技术概述 ···························································· 132 4.3.2 差错控制编码 ···································································· 134 4.3.3 线性分组码 ······································································· 135 4.3.4 汉明码 ············································································· 138 4.3.5 循环码 ············································································· 139 4.3.6 卷积码 ············································································· 142 4.3.7 Turbo 码 ··········································································· 145 4.3.8 LDPC 码 ··········································································· 148 本章小结 ························································································· 151 习题 4 ····························································································· 151 第 5 章 数字信号基带传输 ·············································································· 151 5.1 概述 ························································································ 152 5.1.1 信号 ················································································ 152 5.1.2 数字基带信号 ···································································· 153 5.1.3 数字基带传输系统的构成 ······················································ 153 5.2 数字基带信号的码型 ···································································· 156 5.2.1 常用码型 ·········································································· 156 5.2.2 码型的功率谱分布 ······························································· 167 5.3 数字基带信号传输与码间串扰 ························································· 169 5.3.1 数字基带信号传输的定量分析 ················································ 169 5.3.2 无码间串扰的基带传输 ························································· 171 本章小结 ························································································· 173 习题 5 ····························································································· 173 第 6 章 通信系统的载波调制 ··········································································· 175 6.1 模拟调制 ··················································································· 176 6.1.1 幅度调制 ·········································································· 177 6.1.2 频率调制 ·········································································· 180 6.1.3 双边带调制 ······································································· 184 6.2 数字调制 ··················································································· 187 6.2.1 振幅键控 ·········································································· 188 6.2.2 频移键控 ·········································································· 192 6.2.3 相移键控 ·········································································· 197 6.2.4 差分相移键控 ···································································· 201 6.3 正交频分复用 ············································································· 205 6.3.1 正交频分复用的基本原理 ······················································ 205 6.3.2 正交频分复用的实现 ···························································· 206 本章小结 ························································································· 211 习题 6 ····························································································· 211 第 7 章 通信系统的应用开发实践案例 ····························································· 213 7.1 通信系统的设计与实现概述 ···························································· 214 7.1.1 通信系统的发射机设计 ························································· 214 7.1.2 通信系统的接收机设计 ························································· 222 7.1.3 通信系统的 MWORKS 实现 ··················································· 224 7.2 MIMO-OFDM 通信系统设计与实现 ·················································· 232 7.2.1 MIMO 系统的原理及模型 ······················································ 233 7.2.2 MIMO-OFDM 通信系统 ························································ 238 7.2.3 MIMO-OFDM 通信系统的 MWORKS 实现 ·································· 240 本章小结 ························································································· 251 习题 7 ····························································································· 252