典型文献
Optimized blind equalization for probabilistically shaped high-order QAM signals
文献摘要：
Probabilistically shaped[PS]high-order quadrature amplitude modulation[QAM]signals are attractive to coherent optical communication due to increased spectral efficiency.However,standard digital signal processing algorithms are not optimal to demodulate PS high-order QAM signals.Therefore,a compromise equalization is indispensable to compensate the residual distortion.Meanwhile,the performance of conventional blind equalization highly depends on the accurate ampli-tude radius and distribution of the signals.The PS high-order QAM signals make the issue worsen because of indistinct amplitude distributions.In this work,we proposed an optimized blind equalization by utilizing a peak-density K-means clus-tering algorithm to accurately track the amplitude radius and distribution.We experimentally demonstrated the proposed method in a PS 256-QAM coherent optical transmission system and achieved approximately 1 dB optical signal-to-noise ratio improvement at the bit error rate of 1 x 10-3
文献关键词：
中图分类号：
作者姓名：
Fengchu Cao;Mingyi Gao;Pengfei Wang;Xiaodi You;Gangxiang Shen
作者机构：
Jiangsu Engineering Research Center of Novel Optical Fiber Technology and Communication Network,Suzhou Key Laboratory of Advanced Optical Communication Network Technology,School of Electronic and Information Engineering,Soochow University,Suzhou 215006,China
文献出处：
引用格式：
[1]Fengchu Cao;Mingyi Gao;Pengfei Wang;Xiaodi You;Gangxiang Shen-.Optimized blind equalization for probabilistically shaped high-order QAM signals)[J].中国光学快报（英文版）,2022(08):1-5
A类：
Probabilistically,demodulate
B类：
Optimized,blind,equalization,probabilistically,shaped,order,QAM,signals,PS,quadrature,amplitude,modulation,are,attractive,coherent,optical,communication,due,increased,spectral,efficiency,However,standard,digital,processing,algorithms,not,optimal,Therefore,compromise,indispensable,compensate,residual,distortion,Meanwhile,performance,conventional,highly,depends,radius,make,issue,worsen,because,indistinct,distributions,In,this,work,proposed,optimized,by,utilizing,peak,density,means,clus,tering,accurately,track,We,experimentally,demonstrated,method,transmission,system,achieved,approximately,dB,noise,ratio,improvement,bit,error
AB值：
0.550738
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