On achievable rates for long-haul fiber-optic communications

被引：55

作者：

Fehenberger, Tobias ^{[1
]}

Alvarado, Alex ^{[2
]}

Bayvel, Polina ^{[2
]}

Hanik, Norbert ^{[1
]}

机构：

[1] Tech Univ Munich, Inst Commun Engn, D-80333 Munich, Germany

[2] UCL, Opt Networks Grp, London WC1E 7JE, England

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH-SPECTRAL-EFFICIENCY; OPTICAL-TRANSMISSION; INFORMATION RATES; CAPACITY; LIMITS; NETWORKS; CHANNELS;

D O I：

10.1364/OE.23.009183

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Lower bounds on mutual information (MI) of long-haul optical fiber systems for hard-decision and soft-decision decoding are studied. Ready-to-use expressions to calculate the MI are presented. Extensive numerical simulations are used to quantify how changes in the optical transmitter, receiver, and channel affect the achievable transmission rates of the system. Special emphasis is put to the use of different quadrature amplitude modulation formats, channel spacings, digital back-propagation schemes and probabilistic shaping. The advantages of using MI over the prevailing Q-factor as a figure of merit of coded optical systems are also highlighted. (C) 2015 Optical Society of America

引用

页码：9183 / 9191

页数：9

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