DVB-S码型研究及信道编码FPGA实现.doc

DVB-S 码型研究及信道编码FPGA实现
摘要
数字电视广播系统,与以往的模拟电业务相比,在节省频谱资源、提高节目质量方面带来了一场新的革命,
DVB(DigitalvidcoBroadcasting)标准的建立更是加速了数字电视广播系统的大规模应用。DVB标准选定MPEG一2标准作为音频及视频的编码压缩方式,随后对MPEG一2码流进行打包形成TS流(transPortstream),进行多路传输流复用,通过不同媒介进行传输。
本文主要工作:
对DVB码型、TS流复用做了深入研究。
对信道编码进行了基于VHDL的FPGA实现,并通过QUARTUSii编译实现。
对电视视频系统相关编码知识进行扩展与展望。
关键词:DVB-S TS FPGA VHDL QUARTUSII
The Research Of DVB-S Code And The FPGA Implementation of Channel Code
Abstract
Digital television broadcasting system, pared to the previous analog business, saving spectrum resources, improve the quality of programs to bring about a new revolution,
DVB (Digital video Broadcasting) standard is to accelerate the establishment of more large-scale application of digital television broadcasting system. DVB standard MPEG-2 standard as the selected audio and pression encoding, and then on the MPEG-2 TS stream to form a stream package (transPortstream), for multi-transport stream multiplexing, is transmitted through different media.
This paper work
Firstly:on the DVB pattern, TS stream multiplexing done in-depth study,
Second: the channel coding based on the realization of VHDL, piled by QUARTUSii achieved.
Finally: to extend knowledge of the relevant codes and Prospects on the television video systems.
Key Words: DVB-S TS FPGA VHDL QUARTUSII
目录
第一章:DVB简介…………………………………………………(1)
、DVB定义…………………………………………………(1)
、DVB核心技术………………………………………………(1)
、DVB-S卫星数字电视广播标准……………………………(2)
第二章:信源编码简介……………………………………………(3)
、信源编码介绍…………………………………………………(3)
、图像:预测编码……………………………………………(3)
、Ipb帧:帧内编码……………………………………………(5)
、变换编码……………………………………………………(6)
、其他信源编码标准………………………………………………(6)
第三章:TS流…………………………………………………(8)
第四章:信道编码……………………………………………………(12)
、扰码(M序列) …………………………………………………(13)
、(204,188)RS码………………………………………………(16)
、卷积交织………………………………………………………(20)
、(2,1,7)卷积码…………………………………………………(27)
第五章:拓展与展望……………………………………………………(31)第六章:参考文献…………………………………………………………(33)
第七章:谢辞……………………………………………………………(34)
正文:
第一章 DVB简介
、DVB定义