Comparison of Laguerre-Gaussian and Donut modes for MDM-WDM in OFDM-Ro-FSO transmission system

被引：45
|
作者：
Chaudhary, Sushank [1 ]
Tang, Xuan [1 ]
Wei, Xian [1 ]
机构：
[1] Chinese Acad Sci, Quanzhou Inst Equipment Mfg, Haixi Inst, Beijing, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2018年 / 93卷
关键词：
Ro-FSO; MDM; WDM; Atmospheric turbulences; FREE-SPACE OPTICS; RADIO; FIBER; NETWORK; SIGNALS;
D O I：
10.1016/j.aeue.2018.06.024
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：
Radio-over-free-space-optics (Ro-FSO) technology may pave the way towards a ubiquitous platform for seamless integration of radio and optical networks without expensive optical fiber cabling. In this paper, to increase the capacity of Ro-FSO, mode division multiplexing (MDM) of two modes has been capitalized in a three-channel WDM system spaced by 1 nm over a FSO link of 80 km, resulting in a 120 Gbps six-channel Ro-FSO system. The SNR and received power of MDM of two Laguerre-Gaussian modes LG00 and LG01 is compared with respect to MDM of two transverse donut modes. The performance of four-level quadrature amplitude modulation (QAM) for orthogonal frequency division multiplexing (OFDM) of radio subcarriers in the WDM-MDMs system is investigated for mitigation of frequency-selective fading under strong atmospheric turbulence.
引用
收藏
页码：208 / 214
页数：7
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