Increased dimensionality of SP-MQAM modulation higher than 4D to 8D
| Autor: | Guijun Hu, Zhengxun Song, Enock Kashero |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Optical communication 02 engineering and technology Spectral efficiency Partition of a set Topology Polarization (waves) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Asymptotic power 020210 optoelectronics & photonics Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Physical and Theoretical Chemistry business Telecommunications Curse of dimensionality |
| Zdroj: | Optics Communications. 396:15-18 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2017.03.029 |
| Popis: | In this letter we introduce two eight dimensional set partition mQAM (SP-8D-QAM) modulation formats for coherent optical communication as SP-8D-16QAM and SP-8D-32QAM, focusing on their improved spectral efficiency (SE) of up to 3.75 and 4.75 b/s/Hz/pol respectively. We compared the SP-8D-QAM modulation formats to PM-16QAM, PM-32QAM, 128ary SP-QAM and 512ary SP-QAM, and showed the trade-off between their spectral efficiency and asymptotic power efficiency. To achieve the eight dimensionality, we added time as orthogonal channels to both polarization X and Y, in-phase I and quadrature Q for signals mapping. The simulation results show that both SP-8D-16QAM and SP-8D-32QAM give an intermediate performance compromise between 128ary SP-QAM and PM-16QAM and between 512ary SP-QAM and PM-32QAM respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect