OFDM带通信号光纤传输分析  

Analysis of OFDM's bandpass signals on opitical fiber transmission

作　　者：陈锡华[1] 张文[1] 

机构地区：[1]桂林航天工业高等专科学校,广西桂林541004

出　　处：《光通信技术》2006年第10期55-56,共2页Optical Communication Technology

摘　　要：理论上分析了OFDM信号在模拟光纤传输系统中影响载噪比的主要因素;一定的传输距离和发射光功率情况下,不同的子载波数存在一个最佳的光调制指数,使得系统载噪比最大;分析表明,系统以不到3dB的载噪比损失,信道容量可获得两倍的增长,系统有较强的容量调节能力。Analyzed theoretically the main factors that affects the OFDM signal carrier-to-noise ratio transmitted on the analog optical fiber transmission system ; Under a certain deliver distance and the light power, the different sub-carries number to exist a best optical modulation index, making the system＇s carrier-to-noise ratio biggest. Analyze enunciation, system carrier-to-noise ratio do not lose to the 3dB, capacity can acquire a double growth, the system has an stronger ability to regulate capacity.

关 键 词：正交频分复用 光调制指数 载噪比 

分 类 号：TN929.11[电子电信—通信与信息系统]