3.1.2 随参信道..................................................................................................................23
3.2 通信系统中噪声概述及高斯白噪声 ............................................................................24
3.2.1 噪声概述..................................................................................................................24
3.2.2 高斯白噪声..............................................................................................................24
3.3 仿真系统设计――BFSK 在三种传输信道中的传输性能分析 .................................24
第四章 模拟信号的数字传输研究及其仿真.......................................................................29
4.1 模拟信号的数字传输模型及抽样定理 ........................................................................29
4.1.1 模拟信号的数字传输模型......................................................................................29
4.1.2 抽样定理..................................................................................................................29
4.2 模拟信号的量化 ............................................................................................................30
4.2.1 均匀量化..................................................................................................................30
4.2.2 非均匀量化..............................................................................................................30
4.3 脉冲编码调制及差分脉冲编码调制原理 ....................................................................31
4.3.1 脉冲编码调制(PCM)原理 ......................................................................................31
4.3.2 差分脉冲编码调制（DPCM)原理.........................................................................................32
4.4 仿真系统设计 ................................................................................................................32
4.4.1 A 律十三折与 u 律十五折量化误差分析...............................................................32
第五章 通信系统信道编码研究及其仿真.............................................................................35
5.1 信道编码概念 ................................................................................................................35
5.2 信道编码分类 ................................................................................................................35
5.2.1 分组编码..................................................................................................................35
5.2.2 循环冗余码..............................................................................................................36
5.2.3 卷积编码..................................................................................................................36
5.3 仿真系统设计 ................................................................................................................37
5.3.1 RS 编码纠错性能分析.............................................................................................37
5.3.2 CRC-16 编码检错性能分析 ....................................................................................38
第六章 通信系统信号调制研究及其仿真...........................................................................41
6.1 信号调制的概念 ............................................................................................................41
6.2 信号调制 ........................................................................................................................41
6.2.1 脉冲振幅调制（PAM）.........................................................................................41
