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
收藏
页码：2546 / 2550
页数：5
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