文档介绍：DVB系统编解码技术的研究与实现
目录
摘要 III
ABSTRACT V
第1章绪论 - 1 -
数字电视简介 - 1 -
DVB标准的发展及现状 - 3 -
System View仿真系统简介 - 6 -
第2章 DVB-S信道传输系统 - 7 -
DVB-S系统传输过程 - 7 -
系统中的模块仿真 - 18 -
第3章 DVB-C信道传输系统 - 25 -
DVB-C系统简介 - 25 -
欧洲DVB-C传输系统 - 27 -
QAM调制解调模块的仿真 - 31 -
第4章 DVB-T信道传输系统 - 35 -
DVB-T系统的信道特性 - 35 -
DVB-T传输系统 - 36 -
COFDM简介 - 41 -
在System View平台上仿真端对端DVB系统 - 45 -
参考文献 - 49 -
致谢 - 51 -
DVB系统编解码技术的研究与实现
摘要
随着通信技术、计算机技术、数字处理技术及图像压缩技术的迅猛发展,模拟电视正逐步向全数字高清晰度电视(HDTV)过渡。欧洲广播联盟提出的数字视频广播标准即DVB系列标准,融合了先进的信息处理技术,得到了许多国家的支持,我国也采用了该标准。
信道编码是传输过程中的关键部分,本文介绍了DVB-S(数字卫星电视广播)、DVB-C(数字电视有线广播)和DVB-T(数字电视地面广播)的传输原理,并对DVB在信道传输过程中所涉及到的如RS编解码、卷积交织与解交织、QAM调制解调等模块进行了设计,并在System View平台上对以上模块及端对端DVB系统进行了电路搭建与仿真。
关键词:数字视频广播,RS编码,System View,COFDM
DVB system codec technology Research and Implementation
Abstract
munications technology, computer technology, digital image processing technology and the rapid development pression technology, analog TV is gradually to all-digital high-definition television (HDTV) transition. The European Broadcasting Union's Digital Video Broadcasting DVB standard that the series of standards, integration of advanced information processing technology, has the support of many countries, China has adopted the standards.
Channel coding in the course of transmission is the key part of this paper, DVB-S (digital satellite television broadcasting), DVB-C (digital cable TV broadcasting) and DVB-T (terrestrial digital TV broadcasting) transmission principle, and in the DVB Channel transmission involved in the process such as the RS to the codec, intertwined with the convolution of the intertwined, QAM modem modules for the design and System View on the above platform module and end-to-end DVB system circuit structures And simulation.
Key words: Digital Video Broadcasting, RS coding, System View, COFDM
第1章绪论
数字电视简介
所谓数字电视,严格地说就是从信源开始,将图像画面的每一个像素、伴音的每一个音节都用二进制编码成多位数据,在经过高效的信源压缩编码和前向纠错编码、交织与调制等措施