数字电视有线传输系统的信号发送分别是由前端系统、传输系统、终端系统三个部分完成的,这三个系统构成了数字电视有线传输系统发送端信号,因此它们所处的环境和本身的质量问题都会影响传输系统的信号发送。着重讨论了系统信号的传输技术包括电缆传输技术、SDH系统传输技术、光纤传输技术、光纤同轴混合网传输技术等,并介绍了各自的原理和特点,以期为日后数字电视的发展提供良好的借鉴。 Digital television cable transmission system, the signal is sent by the front-end system, transmission system, the terminal system is completed in three parts, the three systems constitute the digital television cable transmission system, the sender signal, so they are in the environment and its own quality The problems all affect the signaling of the transmission system. The transmission of system signals including cable transmission technology, SDH system transmission technology, optical fiber transmission technology and optical fiber coaxial hybrid network transmission technology are emphatically discussed, and their respective principles and characteristics are introduced in order to provide a good signal for the future development of digital television Learn from