CO-OFDM系统中基于Pilot位置的XPM补偿及优化(本期优秀论文)  

Cross-phase modulation compensation and optimization based on pilot positions for CO-OFDM systems

作　　者：李炜[1] 汪文晋[1] 金鑫[1] 任敬斌 吴欣宜 高冠军[2] 

机构地区：[1]国网甘肃省电力公司信息通信公司,兰州730050 [2]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《光通信技术》2015年第5期1-4,共4页Optical Communication Technology

基　　金：国家电网公司科技项目(52272313507M)资助;国家自然基金项目(61302085;61201154)资助

摘　　要：研究了相干光正交频分复用(CO-OFDM)系统中基于射频导频(RF-Pilot)的交叉相位调制(XPM)补偿的关键技术,提出了基于Pilot位置的补偿优化方案,通过理论分析得到了最优Pilot位置的选取原则和Q因子分布规律,仿真结果证明了理论分析的正确性。针对7信道CO-OFDM系统,最优和最差Pilot位置处的系统性能相差1.6d B,在实际设计中应根据具体信道配置和该信道上XPM损伤的分布情况来选取最优的Pilot位置,以提升补偿效果和系统性能。The key techniques of RF-Pilot based cross-phase modulation （XPM） compensation are studied for CO-OFDM systems. A novel compensation optimization scheme based on the pilot positions is proposed. The optimization principle and the RF-Pilot distribution rules are theoretically analyzed, which are also demonstrated by numerical simulations. For a 7-channel CO-OFDM system, the Q factors for best and worst pilot positions is as high as 1.6dB, which indicates in real applications the optimal pilot positions should be selected according to the specific channel configuration and its XPM distributions, in order to improve the compensation efficiency and system performance.

关 键 词：相干光正交频分复用 交叉相位调制 非线性补偿 

分 类 号：TN929.11[电子电信—通信与信息系统]