论文1

武汉理工大学《通信系统课群综合训练与设计》课程设计说明

目 录

摘 要 .................................................................................Ⅰ ABSTRACT ..............................................................................Ⅱ 1设计任务与整体概述 ....................................................................1

1.1设计任务 ........................................................................1 1.2整体概述 ........................................................................1 1.3原理框图 ........................................................................2 2 PCM编译码 ............................................................................3

2.1模拟信号的抽样 ..................................................................3 2.2抽样信号的量化 ..................................................................3

2.2.1均匀量化 ..................................................................4 2.2.2非均匀量化 ................................................................4 2.3 PCM编译码 ......................................................................6

2.3.1脉冲编码调制的基本原理 ....................................................6 2.3.2 逐次比较法编码 ...........................................................7 2.3.3 折叠二进制码原理 .........................................................8 2.3.4逐次比较法译码原理 ........................................................9 2.4 MATLAB编程实现PCM编译码 ......................................................10 3 HDB3码编解码 ........................................................................11

3.1 HDB3码编码 ....................................................................11 3.2 HDB3码的译码 ..................................................................12 3.3 MATLAB实现HDB3码编解码 .......................................................12 4循环码 ......................