Performance comparison of high-speed long-reach mode division multiplexing-based radio over free space optics transmission system using different modulation formats under the effect of atmospheric turbulence

被引：27
|
作者：
Singh, Mehtab [1 ]
Malhotra, Jyoteesh [1 ]
机构：
[1] Guru Nanak Dev Univ, Dept Elect & Commun Engn, Reg Campus, Jalandhar, Punjab, India
来源：
OPTICAL ENGINEERING | 2019年 / 58卷 / 04期
关键词：
radio over free space optics; mode division multiplexing; atmospheric turbulence; modulation format; data transmission rate; MDM-WDM; COMMUNICATION; PARAMETERS; LINK; OFDM;
D O I：
10.1117/1.OE.58.4.046112
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the performance comparison of mode division multiplexing (MDM)-based radio over free space optics (RoFSO) transmission system using different modulation formats viz. alternate mark inversion, nonreturn to zero (NRZ), return to zero-differential phase shift keying (RZ-DPSK), and NRZ-DPSK under varying atmospheric turbulence conditions and data transmission rates. The results show that the NRZ-DPSK modulation format performs considerably better as compared to other modulation formats. Furthermore, the enhanced performance of the proposed NRZ-DPSK modulation-based MDM-RoFSO transmission system is investigated under different weather conditions and the results are compared with previously reported works. (C) 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
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