Free-space optical communication using subcarrier modulation in gamma-gamma atmospheric turbulence

被引：38
|
作者：
Ghassemlooy, Z. [1 ]
Popoola, W. O. [1 ]
Leitgeb, E. [2 ]
机构：
[1] Northumbria Univ, Opt Commun Res Grp, NCRLab, Ellison Bldg, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
[2] Inst BroadBand Commun, Graz, Austria
来源：
ICTON 2007: PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS, VOL 3 | 2007年
关键词：
D O I：
10.1109/ICTON.2007.4296269
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：
Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations. This results in decreased signal-to-noise ratio and consequently impaired error performance. In this paper, the error performance of the FSO using a subcarrier intensity modulation (SIM) based on a binary phase shift keying scheme in clear but turbulent atmosphere is presented. To evaluate the system error performance in turbulence regimes from weak to strong, the probability density function of the received irradiance after traversing the atmosphere is modelled using the gamma-gamma distribution and the effect of turbulence induced irradiance fluctuation is mitigated using spatial diversity.
引用
收藏
页码：156 / +
页数：3
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