一种新型的多业务光载无线系统
A novel multi-service radio-over-fiber system
摘要
文章提出一种使用单一信道加载不同传输速率业务的光载无线系统方案。使用外调制器实现双边带调制,利用光栅滤波器分离左右边带和载波,经过强度调制对左右边带分别加载速率为1.25和1.5 Gbit/s的两种业务。仿真结果显示,信号经过50 km的光纤传输后,系统传输性能良好。该方案提高了单一信道的带宽利用率,增强了系统的灵活性。
Abstract
This paper presents a novel Radio-over-Fiber(ROF) system scheme for carrying services with different transmission rates in a single channel. Double sideband modulation is realized by using external modulators and the sidebands and carrier are separated by grating filters. The two sidebands carry two kinds of services with different rates of 1.25 and 1.5 Gbit/s respectively in intensity modulation. Simulation results show that the system performances are good after the signals are transmitted for 50 km in an optical fiber. This scheme can improve the bandwidth utilization ratio of single channels and enhance the system flexibility.
潘武, 李柚, 雷达, 尹怡辉. 一种新型的多业务光载无线系统[J]. 光通信研究, 2011, 37(6): 60. Pan Wu, Li You, Lei Da, Yin Yihui. A novel multi-service radio-over-fiber system[J]. Study On Optical Communications, 2011, 37(6): 60.