摘要
正交频分复用(OFDM)具有频谱利用率高和抗色散的优点,将其应用于光通信系统中能大大提高光通信的传输性能。本文利用Matlab和Optisystem光学仿真软件对基于强度调制/直接检测一光正交频分复用(IM/DD—OFDM)的多模光纤通信系统进行了仿真和性能分析,仿真结果表明了该系统在10Gbps的信号速率下传输距离可达1200m,误码率小于1e-3的情况下最高传输速率可达40Gbps,能够很好的适用于短距离以太网和最后一公里通信。
Orthogonal frequency division multiplexing (OFDM) has the characteristics of high utilization rate of frequency spectrum and anti-dispersion. According to its characteristics, it is used in optical communication systems to improve the the transfer performance of optical communication. In this paper, muhimode optical fiber communication system based on the intensity modulation/direct detection-optical orthogonal frequency division muhiplexing (IM/DD-OOFDM) is simulated and analyzed with Matlab and optical simulation software Optisystem. The simulation results show that transmission distance is 1200m when the single rate of system is 10Gbps, and the maximal transmission rate is 40Gbps in the case of BER 〈 le -3. It runs well in the short-distance Ethernet and last kilometer.
出处
《电光系统》
2011年第1期1-4,共4页
Electronic and Electro-optical Systems