信号可以来自有线电缆、卫星天线、宽带网络以及地面广播。
Signal can come from cable, satellite antenna, broadband networks, and terrestrial broadcasting.
其中，数字电视地面广播（DTTB）最为复杂、覆盖范围最广。
The Digital Television Terrestrial Broadcasting(DTTB) is the most complex, the widest range among them.
数字电视地面广播(DTTB)是近年来国际上大学和企业研究的热点之一。
Digital Television Terrestrial Broadcasting (DTTB) is recently one of hot points researched by universities and enterprises around the world.
本文介绍了COFDM传输原理和数字电视地面广播系统的COFDM实现方案。
This paper gives the COFDM transmission principle and DVB-T COFDM scheme.
在单载波数字电视地面广播接收机中，可以采用对接收信号直接进行自适应均衡的方案。
For the single carrier Digital Television Broadcasting-Terrestrial receiver, the method of direct adapt equalization can be used.
信道估计和信道均衡无疑是数字电视地面广播标准接收机设计中所要考虑的核心问题之一。
Channel estimation and equalization are one of the core problems in the design of receivers in Digital Television Broadcasting-Terrestrial Standard.
本文介绍了一种用数字方式实现美国数字电视地面广播系统中的8VSB调制器的方法。
This paper describes the realization of ATSC 8-VSB Modulator of the VSB-based HDTV terrestrial broadcasting system by using almost all digital methods.
标准是在DVB - T标准基础上针对移动手持终端的数据和多媒体服务而制定的新一代数字地面广播标准。
DVB-H is a new digital terrestrial broadcasting standard especially for mobile data and multimedia service to handheld terminals based on DVB-T standard.
本文分析了数字电视地面广播通信信道具有长脉冲响应的多径衰落的特点，从频域上表达了其多径衰落信道模型；
The characteristics of the digital television terrestrial broadcasting (DTTB) channels with long impulse responses are analyzed, and the frequency domain multipath channel model is given.
分析了中国数字电视地面广播标准中的系统帧结构，并根据信号帧头的循环特性，提出了一种性能较好的信道估计算法；
The frame structure in Chinese DTTB standard is introduced, and a channel estimation algorithm with a better performance is given according to the cycle characteristics of the signal frame head.
深入研究了数字电视地面广播COFDM解调方案中的解映射软判决技术，提出了适用于该系统的信道状态信息CSI提取方法。
This paper investigates the soft decision of de-mapping technique in COFDM de-modulation scheme. It proposes a new method suitable for the scheme for extracting CSI from communication channel.
文章在分析地面传输信道特性的基础上，介绍了地面广播数字电视的DVB - T标准，探讨了其核心的正交编码频分多路复用COFDM技术、前端发射设备的系统结构及其优缺点。
Base on the analysis of terrestrial transfer channel, the paper introduces the DVB-T standard, and discuss the core COFDM technology as well as front-end transmit system structure.
数字视频广播(DVB)是欧洲170多个组织共同开发出的数字高清晰度电视标准，它主要由卫星广播(DVB - S)、地面广播(DVB - T)和有线电视(DVB - C)三部分组成。
DVB is the digital HDTV standard that developed by more than 170 organizations in Europe. It mainly comprises satellite (DVB-S), terrestrial (DVB-T) and cable (DVB-C) digital television systems.
数字视频广播(DVB)是欧洲170多个组织共同开发出的数字高清晰度电视标准，它主要由卫星广播(DVB - S)、地面广播(DVB - T)和有线电视(DVB - C)三部分组成。
DVB is the digital HDTV standard that developed by more than 170 organizations in Europe. It mainly comprises satellite (DVB-S), terrestrial (DVB-T) and cable (DVB-C) digital television systems.
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