恒模算法在长距离射频光正交频分复用系统中的应用  

Application of CMA Algorithm in Long-haul Radio Frequency Optical Orthogonal Frequency Division Multiplexing System

作　　者：高丽娜 姜伟虎 姜广胜 GAO Li-na;JIANG Wei-hu;JIANG Guang-sheng(Shijiazhuang Division of PLA infantry college, Shijiazhuang 050200, China)

机构地区：[1]陆军步兵学院石家庄校区,河北石家庄050200

出　　处：《指挥控制与仿真》2021年第5期115-118,共4页Command Control & Simulation

摘　　要：基于射频的光正交频分复用系统相对于全光通信系统来说成本低廉,在长距离光纤通信中得到广泛应用。在扩容需求下,色散的影响变得不可忽略。搭建基于直接检测的射频光正交频分复用仿真系统,分析了色散对系统的影响,在接收端采用恒模算法(CMA)对其均衡。实验结果表明,100 Gbps的二进制调制信号经射频光正交频分复用系统传输1000 km后,均衡效果能够达到系统的误码性能要求。The RF-based optical orthogonal frequency division multiplexing system which is of lower cost compared with all-optical communication system is widely used in long-haul optical fiber communication.While dispersion can not be ignored under the demand of increasing capability.Then direct detection RF-based optical OFDM simulation system is built.Dispersion on the system is analyzed and equalized by constant modulus algorithm(CMA)in receiver.Simulation results demonstrate that the equalization method can achieve the bit error performance for RF-based optical orthogonal frequency division multiplexing system in which the binary modulation signals for 100 Gbit/s is transmitted 1000 km.

关 键 词：恒模算法 正交频分复用系统 电域均衡 

分 类 号：TN929.11[电子电信—通信与信息系统] E95[电子电信—信息与通信工程]