512 QAM transmission over 240 km using frequency-domain equalization in a digital coherent receiver

被引：16
|
作者：
Koizumi, Yuki [1 ]
Toyoda, Kazushi [1 ]
Omiya, Tatsunori [1 ]
Yoshida, Masato [1 ]
Hirooka, Toshihiko [1 ]
Nakazawa, Masataka [1 ]
机构：
[1] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 21期
关键词：
DISPERSION;
D O I：
10.1364/OE.20.023383
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a marked performance improvement in a 512 QAM transmission by employing frequency-domain equalization (FDE) instead of an FIR filter. FDE enables us to compensate for distortions due to hardware imperfections in the transmitter with higher precision, which successfully reduced the power penalty by 4 dB in a 54 Gbit/s (3 Gsymbol/s)-160 km transmission. FDE also allows the transmission distance to be extended up to 240 km. (C) 2012 Optical Society of America
引用
收藏
页码：23383 / 23389
页数：7
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