摘要
首先扼要介绍了数字卫星电视（DVB－S）所采用的几项关键技术，包括信源编解码MPEG－2，复用，信道编解码，加扰，凋制解调等。然后扼要介绍了接收机设计中要解决的几个问题：如信道解调和解码、传输流解复用、音视频解码、网络信息管理及数据解码、用户界面及其他，并探讨了接收机方案选择及软硬件设计中要考虑的几个问题，如系统灵活性、可升级性及模块化设计等，并以熊猫数字卫星电视接收机系统的软硬件设计为例作了探讨。
This paper introduces some key techniques used in digital satellite television (DVB-S), including source encoding and decoding (MPEG-2), multiplex, channel coding and decoding. scrambling. modulation anddemodulation and etc. And then some problems need to he solved in the design of receiver are described, such aschannel demodulation and decoding, demultiplex of the transport stream, audio and video decoding, network infor mation management and data decoding, and user interface. Taking Panda digital satellite TV receiver system as anexample, some issues that need to be considered in the selection of receiver scheme and the design of hardwareand software are discussed, such as system flexibility, upgradability and modular design.[
出处
《电视技术》
北大核心
1999年第6期62-65,共4页
Video Engineering
关键词
数字卫星电视
接收机
信道加扰
传输流
用户界面
: Digital satellite TV receiver
Channel scrambling
Transport stream
User interface.
