Improving nonlinearity tolerance of 112-Gb/s PDM OFDM systems with coherent detection using BLAST algorithm  

作　　者：徐艳飞 乔耀军 纪越峰 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

出　　处：《Chinese Optics Letters》2012年第11期13-16,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Sci-ence Foundation of China(No.60932004);the National"973"Program of China(No.2012CB315705);the National"863"Program of China(No.2012AA011301)

摘　　要：The use of Bell Laboratories layered space-time （BLAST） architecture as a digital signal processing algorithm is proposed in this letter. It is aimed at improving the nonlinearity tolerance of a polarization division multiplexing （PDM） coherent optical orthogonal frequency division multiplexing （CO-OFDM） system. The application of this channel estimation algorithm simulates system performance under different dispersion compensation （DC） maps. Simulation results show that, compared with intra-symbol frequency-domain averaging （ISFA） algorithm, at least 5-dB Q-factor improvement is achieved for the PDM CO-OFDM system at 112-Gb/s data rate over an 800-km standard single-mode fiber （SSMF） without DC.The use of Bell Laboratories layered space-time （BLAST） architecture as a digital signal processing algorithm is proposed in this letter. It is aimed at improving the nonlinearity tolerance of a polarization division multiplexing （PDM） coherent optical orthogonal frequency division multiplexing （CO-OFDM） system. The application of this channel estimation algorithm simulates system performance under different dispersion compensation （DC） maps. Simulation results show that, compared with intra-symbol frequency-domain averaging （ISFA） algorithm, at least 5-dB Q-factor improvement is achieved for the PDM CO-OFDM system at 112-Gb/s data rate over an 800-km standard single-mode fiber （SSMF） without DC.

关 键 词：Algorithms Optical communication Orthogonal frequency division multiplexing Single mode fibers Telecommunication systems 

分 类 号：TN919.3[电子电信—通信与信息系统]