Optimal Hexagonal Constellations Based on a Two-Dimensional Signal Space for Peak-Limited Intensity-Modulated Channels

被引：3

作者：

Chen, Ru-Han ^{[1
]}

Zhu, Zhao-Rui ^{[1
]}

Zhang, Jian ^{[1
]}

Qu, Jing ^{[1
]}

Zuo, Yu ^{[1
]}

机构：

[1] Natl Digital Switching Syst Engn & Technol Res Ct, Zhengzhou 450000, Henan, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2019年 / 23卷 / 02期

关键词：

Hexagonal lattice; signal space; AWGN; peak-limited; IM/DD; two-dimensional;

D O I：

10.1109/LCOMM.2018.2889720

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

For high-rate peak-limited intensity-modulated optical systems, the two-dimensional time-disjoint signal space (TDSS) is proposed. Based on the TDSS, the optimal hexagonal constellations (OHCs) are proposed analytically under a peak optical power constraint. Both analytical and simulation results show that our proposed OHCs based on the TDSS have the asymptotical peak optical power gain of 0.753 dB over the baseline schemes at no extra bandwidth cost.

引用

页码：254 / 257

页数：4

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