基于GSOP的正交不平衡损伤估计算法研究  

Research on IQ imbalance estimation algorithm based on GSOP

作　　者：周娴 高天宇 霍佳皓 申晓杰 卢东旭 皇甫伟[1] 涂佳静 隆克平[1] ZHOU Xian;GAO Tianyu;HUO Jiahao;SHEN Xiaojie;LU Dongxu;HUANGFU Wei;TU Jiajing;LONG Keping(Institute of Artificial Intelligence School of Computer and Communication Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学计算机与通信工程学院人工智能研究院,北京100083

出　　处：《通信学报》2018年第9期129-134,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61671053;No.61871030);中央高校基本科研业务费专项资金资助项目(No.FRF-BD-17-015a)~~

摘　　要：为实现高速光通信系统高效低成本测试的目标,基于施密特正交化过程(GSOP,Gram-Schmidt orthogonalizationprocedure),提出了一种适用于偏振复用—多进制正交幅度调制(PDM-MQAM)相干光通信系统的正交不平衡损伤估计(IQ-ImEstimation, IQ imbalance estimation)算法。根据同相信号和正交信号两路信号功率关系及相关性,设计幅度失配估计和相位失配估计2种方案。通过对34GBaudPDM-MQAM相干光通信系统进行仿真与实验,验证了IQ-ImEstimation算法的正确性和有效性。In order to satisfy the demand of the efficiency and low cost measurement for high rate optical communication system,the IQ-ImEstimation algorithm was proposed for IQ imbalance estimation in the PDM-MQAM cohernt optical communication system based on GSOP.Two estimation schemes include amplitude impairment and phase impairment were designed by utilizing the power and correlation.Finally,a 34 GBaud PDM-MQAM system was simulated and experimentalized.The results indicate that the IQ-ImEstimation algorithm is accuracy and effective.

关 键 词：正交不平衡损伤估计 多进制正交幅度调制 相干光通信系统 数字信号处理 

分 类 号：TN911.6[电子电信—通信与信息系统]