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.
指出电视数字化时代的到来、地面传输标准的升级，给我国电视发射机制造企业提出了新的挑战，同时也给企业提供了新的机遇。
With the coming of digital times, there exists emerging need to upgrade the ground transmission standards which brings both challenges and opportunities to the TV transmitter manufacturers.
在中国数字电视广播地面传输标准(DTMB)中，使用了非规则准循环ld P C码(QC-LDPC)作为前向纠错编码的核心部分。
In Chinese national standard for Digital Terrestrial Multimedia Broadcasting (DTMB), irregular Quasi Cyclic LDPC (QC - LDPC) code is used as core part of forward error correction coding.
在中国数字电视广播地面传输标准(DTMB)中，使用了非规则准循环ld P C码(QC-LDPC)作为前向纠错编码的核心部分。
In Chinese national standard for Digital Terrestrial Multimedia Broadcasting (DTMB), irregular Quasi Cyclic LDPC (QC - LDPC) code is used as core part of forward error correction coding.
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