摘要
由于数字微波相对模拟微波在传输容量和带宽利用率上有着无可比拟的优点,随着广播电视业务传输量的大量增加,全国广播电视的微波电路陆续进入数字化时代。本文首先对SDH的特点和SDH微波的应用范围作了简要介绍,然后重点介绍如何选择适合广东省广播电视SDH数字微波电路建设的调制方式,最后提出采用XPIC技术的64QAM是适合广东广播电视SDH数字微波电路的调制方式。
Because digital microwave has incomparable advantages in transmission capacity and bandwidth utilization compared with analog microwave, and along with the big increase quantity of broadcast television business transmission, the national broadcast television microwave circuit is into the digital age. Firstly, this paper introduced the characteristics of SDH and the application scope of SDH microwave briefly. Then, the paper gave an emphasis on the introduction how to choose suit- able modulation mode for Guangdong broadcast television SDH digital microwave circuit. Finally, we put forward that the 64 QAM with XPIC technology was suitable modulation method for Guangdong broadcast television SDH digital microwave circuit.
出处
《无线通信技术》
2013年第1期46-49,共4页
Wireless Communication Technology
关键词
广东
广播电视
SDH
数字微波调制方式
Guangdong broadcast television
SDH microwave
modulation mode
