摘要
在相干光正交频分复用(CO-OFDM)多模光纤通信系统中应用自适应技术能优化系统的性能,构建自适应CO-OFDM多模光纤通信系统,提出一种基于光信噪比(OSNR)门限分配算法的子带自适应调制技术。结果表明:使用自适应调制技术可以有效地克服信道深衰落点的影响。21.4Gb/s传输200km误码率(BER)为10-3时,系统对接收端OSNR的要求降低了约2dB。
The application of adaptive technology can optimize the performance of the system in CO-OFDM multimode fiber communication system.The adaptive CO-OFDM multimode fiber communications system is constructed.The sub-band adaptive modulation technology based on an algorithm using threshold allocation of optical signal to noise ration（OSNR） is proposed.The results indicate that in CO-OFDM multimode fiber communication system,the use of sub-band adaptive modulation technology,effectively overcomes the influence of channel deep decline point.The receiver OSNR reduces 2dB OSNR requirement than that without AM technology in 21.4Gb/s CO-OFDM signal transmission whose BER is 10-3 over 200km of multimode fiber.
出处
《光通信技术》
CSCD
北大核心
2011年第2期48-51,共4页
Optical Communication Technology
基金
天津市自然科学基金(08JCYBJC14400)资助
关键词
自适应调制
多模光纤
相干光正交频分复用
adaptive modulation
multiple mode fiber（MMF）
coherent optical orthogonal frequency division multiplexing（CO-OFDM）
