浅析时分复用的基本原理

字数:7627,页数:32   附任务书,电子机电论文开题报告

目       录
摘要 .....................................................................2
第一章   时分复用TDM原理................................................. 3
1.1  TDM方式的优点（相对与FDM） ......................................... 4
1.2  TDM方式目前又分为以下两种 .......................................... 4
第二章  PCM基群帧结构 ................................................... 6
2.1 帧结构 .............................................................. 6
2.2 复帧结构 ............................................................ 7
2.3 E1基群帧的帧长和速率................................................  7
2.4 T1帧结构................................................... ......... 7
第三章  增量调制复用终端的帧结构 ........................................ 9
3.1、基帧...............................................................  9
3.2、复帧 ............................................................... 9
第四章  60路PCM-ADPCM变换编码终端的帧结构..............................  11
第五章  数字复接终端 ................................................... 13
5.1、数字复接................................................... ....... 13
5.2、数字复接的分类....................................................  14
5.3、正码速调整电路................................................... . 16
5.4、同步数字复用系列SDH (Synchronous Digital Hierarchg) ................18
第六章    帧同步.......................................................  19
致    谢 ............................................................... 23
参 考 文献 ............................................................ 24

摘     要

      多路复用的目的是在一条信道上传输多路信号，根据多路复用的方式不同，可以分为频分复用、时分复用、码分复用等。随着数字通信的发展，时分复用得到最为广泛的应用。时分复用TDM是采用同一物理连接的不同时段来传输不同的信号，也能达到多路传输的目的。时分多路复用以时间作为信号分割的参量，故必须使各路信号在时间轴上互不重叠。
关键词：时分复用；物理连接；传输

Brief analysis time-sharing multiplying basic principle
Kun Fan
0501 Electronic information

Abstract： The multiplexing goals are transmit the multi-channel signals on a channel, is different according to the multiplexing ways, may divide into the frequency division multiplying, the time-sharing multiplying, the code minute multiplying and so on.Along with the digital communication development, the time-sharing multiplying obtains the most widespread application.Time-sharing multiplying TDM is uses the identical physical connection the different time interval to transmit the different signal, also can achieve the multiplex goal. The time-sharing multiplexing takes the signal split by the time the parameter, therefore must cause each group signal not to overlap mutually in the time axis.
Key word: Time-sharing multiplying; Physical connection; Transmission