CO-OFDM系统中一种基于空载波间隔的新相位噪声补偿算法  

A Novel Phase Noise Compensation Algorithm Based on Zero-carriers-spacing for CO-OFDM Systems

作　　者：袁建国[1] 盛泉良 马骏[1] 李璋超 刘飞龙[1] 

机构地区：[1]重庆邮电大学光纤通信技术重点实验室,重庆400065

出　　处：《半导体光电》2015年第5期777-779,786,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(61472464);重庆邮电大学(重庆市)研究生科研创新项目(CYS14144)

摘　　要：针对激光器的相位噪声会严重影响相干光正交频分复用(CO-OFDM)系统的性能问题,基于空载波间隔提出了一种适用于CO-OFDM系统的新相位噪声补偿算法,通过空载波来间隔信息子载波,从而有效降低载波间干扰并提高有效信息干扰比。仿真结果表明:与最小平方准则-公共相位误差(LS-CPE)算法相比,该补偿算法能有效地改善系统的误码性能,降低系统对激光器线宽的要求。The phase noise will seriously destroy the performance of coherent optical orthogonal frequency-division multiplexing（CO-OFDM）system.Thus a novel phase noise compensation algorithm for CO-OFDM systems was proposed based on the zero-carriers-spacing.This algorithm can effectively reduce the inter-carrier interference（ICI）and improve the signal-tointerference ratio by inserting the zero-carriers to space the information carriers.Simulation results show that the proposed algorithm,compared with the least-squares common-phase-error（LS-CPE）algorithm,can effectively improve the bit error rate（BER）performance of the system and reduce the tolerance requirement of the laser linewidth.

关 键 词：相干光正交频分复用 相位噪声 空载波间隔 补偿 

分 类 号：TN929.11[电子电信—通信与信息系统]