【作者】 荣健； 李涛； 钟晓春；

【Author】 RONG Jian1,LI Tao1,ZHONG Xiao-chun2 (1.Institute of Physical Electronics,UESTC,Chengdu 610054,China;2.SWJTU,Chengdu 610054,China)

【机构】 电子科技大学物理电子学院； 西南交通大学；

【摘要】 对基于空间光通信的射频传输系统做了仿真,采用远程光外差技术产生毫米波信号。用Matlab软件编写了OFDM的调制和解调模块,用OptiSystem软件搭建了该系统自由空间传输部分的实验仿真平台。最后分析了不同的发射角与接收机孔径对系统性能的影响,在不同天气情况的自由空间信道特性下,计算该系统的有效传输距离。仿真结果表明,该基于空间光通信的射频传输系统能够作为ROF系统的一个有效的补充,达到最后一公里的作用。更多还原

【Abstract】 An experimental Simulation of RF transmission system based on free space optical communication technologies by using Optisystem software is constructed.Optical Remote Heterodyne Detection technique has been used in this module.By combining of matlab and OptiSystem,the model of OFDM and free space optical channel in simulation of system has been established.Finally,we analyzed the different launch angle and receiver aperture on the system performance in different weather conditions of the free-space channel characteristics,and calculate the effective transmission distance of the system.The simulation results show that the RF transmission system based on free space optical communication technologies can be used as a supplement of ROFsystem to reach the last mile role.更多还原