Wiener Filter for Short-Reach Fiber-Optic Links

被引：6

作者：

Plabst, Daniel ^{[1
]}

Gomez, Francisco Javier Garcia ^{[1
]}

Wiegart, Thomas ^{[1
]}

Hanik, Norbert ^{[1
]}

机构：

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

来源：

IEEE COMMUNICATIONS LETTERS | 2020年 / 24卷 / 11期

关键词：

Superluminescent diodes; Optical receivers; Nonlinear optics; Optical transmitters; Communication systems; Barium; Digital dispersion equalization; Wiener filter; LMMSE estimator; intensity modulation; direct detection (IM; DD); geometric shaping; short-haul fiber-optic communication;

D O I：

10.1109/LCOMM.2020.3006921

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Analytic expressions are derived for the Wiener filter (WF), also known as the linear minimum mean square error (LMMSE) estimator, for an intensity-modulation/direct-detection (IM/DD) short-haul fiber-optic communication system. The link is purely dispersive and the nonlinear square-law detector (SLD) operates at the thermal noise limit. The achievable rates of geometrically shaped PAM constellations are substantially increased by taking the SLD into account as compared to a WF that ignores the SLD.

引用

页码：2546 / 2550

页数：5

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