微波上搬移CATV光模拟系统性能初探  

A Primary Study of Microwave Up-shift CATV Optical Analog System

作　　者：李杰[1] 

机构地区：[1]大连广播电视发射台,辽宁大连116001

出　　处：《中国有线电视》2003年第13期32-34,共3页China Digital Cable TV

摘　　要：介绍了一种通过微波上搬移电路来改善传统光模拟CATV系统性能的方法 ,消除有用频带内的非线性失真成分 ,从而提高系统有效光调制指数 ,增加频道容量和传输距离。同时 ,对影响系统性能的各种因素和非线性失真问题进行了讨论。Introduces a method by which microwave up-shift circuit to increase the performances of optical analog CATV system, The NLE components can be removed from the useful frequency band, thus the availble optical modulation index will be improved ,the capacity of frenqucy channels and the distance of transmission can be increased, too . Meantime , several factors impacting on this system and the NLD components are discussed.

关 键 词：微波上搬移 光模拟CATV 非线性失真 光调制指数 频道容量 传输距离 

分 类 号：TN943[电子电信—信号与信息处理]