On the Energy Efficiency of Modulation Formats for Optical Communications

被引：14
|
作者：
Khodakarami, Hamid [1 ,2 ]
Shieh, William [1 ,2 ]
机构：
[1] Univ Melbourne, CEET, Melbourne, Vic 3010, Australia
[2] Univ Melbourne, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 03期
关键词：
Achievable rate; dual polarization; energy efficiency; modulation format; optical communications; polarization switched; rate-adaptive forward error correction (FEC); PDM-QPSK; LIMITS;
D O I：
10.1109/LPT.2012.2235139
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An information theoretic framework for performance evaluation of high-dimensional modulation formats in an optical communication link is proposed. The spectral and energy efficiency of different candidates for future coherent optical communications are analyzed to explore the advantages of exploiting different degrees of freedom for symbol coding, construction, and transmission. Our analysis demonstrates the advantage of fully utilizing both polarization states from the spectral and energy efficiency perspective. In particular, at the same spectral efficiencies of 2.5 and 2.8 b/s/Hz, dual polarization quadrature phase shift keying (DP-QPSK) has, respectively, 0.8 and 1.6 dB energy efficiency advantage over polarization switched QPSK (PS-QPSK).
引用
收藏
页码：275 / 278
页数：4
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