基于MPEG₂ TS流的有线传输方式的研究与实现

【作者】 樊勇；

【导师】 周正欧；

【作者基本信息】 电子科技大学 ， 信号与信息处理， 2003， 硕士

【摘要】 本课题主要研究的是如何通过现有的有线通信网来传输MPEG₂ TS流。本文首先介绍了MPEG₂ 标准及其MPEG₂ 传输流语法结构，接着阐述了数字通信中的同步和复接理论，同步包括载波同步、位同步、群同步和网同步，复接包括按位复接、按字复接、按帧复接。介绍了两种传输MPEG₂ TS流的传输方式——利用反向复用技术通过电信的E1口传输和光纤传输。对于反向复用，先介绍了反向复用的基本原理及其复用的几种类型，编写了用FPGA实现将一路传输率为4.096Mbps的MPEG₂ TS流分接为两路传输率为2.048Mbps的数据流的分装程序，和将两路传输率为2.048Mbps的数据流组装为一路传输率为4.096Mbps的数据流的组装程序，并进行计算机仿真。对于光纤传输，文中介绍了通过光纤传输的两种方式：串行传输和并行传输，并对光纤传输硬件调试中遇到的问题进行分析。我所做的工作主要有：1：查阅资料，了解反向复用和光纤传输的基本知识。2：设计了利用反向复用技术通过电信的E1口传输MPEG₂ TS流的方案，并用FPGA编写了反向复用的程序和进行计算机仿真。3：设计了通过光纤传输的串行传输方式和并行传输方式的电路并完成了硬件调试。4：完成了将串行传输系统和并行传输系统同MPEG₂复用/解复用器所组成的系统的联合调试。更多还原

【Abstract】 This paper mainly focuses on the research on how to transmit the MPEG-2 TS by cable communication network. It first introduces the MPEG-2 standard and the grammar structure of the TS. Then it describes the principle of synchronization and multiplexing in digital communication . The synchronization comprises the carrier synchronization, bit synchronization, group synchronization and network synchronization while the multiplexing includes bit multiplexing, word multiplexing and frame multiplexing. Then, two approaches of how to transmit MPEG₂ TS are introduced-transmission using the inverse multiplexing technology through the interface of E1 telecommunication and fiber transmission. As for the inverse multiplexing, its principle and some multiplexing types are introduced. Then, a disassembly program is designed using the FPGA. It divides one MPEG₂ TS whose data rate is 4.096Mbps into two E1 data streams whose data rate are 2.048Mbps. A re-assembly program is also designed which assembles two data streams at 2.048Mbps into one data stream at 4.096Mbps. Both of the programs are simulated on computer. As for the fiber transmission, this paper introduces two ways of fibre transmission which are serial transmission and parallel transmission. The problems met in the hardware debug of fibre transmission are also analyzed. Such work are done by the author:1. consulting the reference books , getting the basic knowledge of inverse multiplexing and fiber transmission .2. accomplishing the design which transmits MPEG₂ TS through the E1 telecommunication interface with the inverse multiplexing technology; completing the inverse multiplexing program using FPGA and simulating it. 3. completing the circuit design based on the serial fiber transmission and the parallel fiber transmission and theirs hardware debug.4．completing the joint-debug on the system which is made up of the serial transmission system or the parallel transmission system with the MPEG-2 multiplexing/de-multiplexing equipments.更多还原