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8 VSB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.
本课题目的是完成有线数字电视广播系统的重要设备——调制器的设计和实现，核心器件选用FPGA芯片。
Task of the subject is to complete the design and implementation Modulator, which is an important equipment of cable digital vedio broadcasting, with the core chip FPGA device selection.
为了补偿数字电视发射机的频谱畸变与相位失真，以得到最佳的VSB频谱特性，可以在调制器中加入预均衡网络对频谱进行预畸变。
To minimize the frequency and phase distortion in a DTV transmitter in order to achieve best VSB frequency performance, a pre equalizer can be inserted into the modulator.
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