摘要
将卷积码成功地应用到直接检测的光正交频分复用(OFDM)光纤传输实验系统。实验中,产生了2 Gb/s的QPSK OFDM编码光信号,并成功地在标准单模光纤中传输了200 km,和没有采用卷积码的相比,系统的误码性能获得明显提高。在误码率10-3时,可节省1 dBm左右的光功率。实验结果表明,卷积码可应用到OFDM系统。
Convolutional encoding is successfully applied to an experimental system of direct-detection optical orthogonal frequency-division multiplexing（OFDM） signal transmission over fiber.In this experiment,the 2 Gb/s QPSK optical OFDM is generated and transmitted over 200 km single mode fiber.The performance of bit error rate is greatly improved compared with the optical transmission system without convolutional encoding,performance of the system BER is greatly improved and about 1 dBm optical power may be saved at BER 10^-3.The experiment results show that convolutional encode and decoding may be applied for the optical OFDM fiber system.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2010年第3期380-382,共3页
Journal of Optoelectronics·Laser
基金
国家“863”计划资助项目(2007AA01Z263)
湖南省自然科学基金资助项目(06JJ50108)
教育部光通信和光波技术重点实验室(北京邮电大学)开放基金资助
关键词
光纤通信
光调制
正交频分复用(OFDM)
信道编码
optical communication
optical modulation
orthogonal frequency-division multiplexing（OFDM）
channel encode
