Improvement of the Transmission Bandwidth for Indoor Optical Wireless Communication Systems Using a Diffused Gaussian Beam

被引：19
|
作者：
Wu, Dehao [1 ]
Ghassemlooy, Zabih [1 ]
Hoa Le Minh [1 ]
Rajbhandari, Sujan [1 ]
Boucouvalas, Anthony C. [2 ]
机构：
[1] Northumbria Univ, Opt Commun Res Grp, Sch CEIS, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
[2] Univ Peloponnese, Dept Telecommun Sci & Technol, Tripolis, Greece
来源：
IEEE COMMUNICATIONS LETTERS | 2012年 / 16卷 / 08期
关键词：
Optical wireless communications; diffused Gaussian beam; multipath dispersion and RMS delay spread;
D O I：
10.1109/LCOMM.2012.060812.120803
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The multipath dispersion in a non-directed line-of-sight (LOS) indoor optical wireless communications (OWC) channel limits the transmission bandwidth. In this study, we improve the transmission bandwidth by employing a TEM00 mode laser beam and an alignment-free light shaping diffuser (LSD). We derive a new expression for the radiation field distribution of the diffused Gaussian beam (DGB) and its multipath impulse response. The transmission bandwidth is determined based on the numerical simulation of the root mean square (RMS) delay spread in a room. Results show that indoor OWC systems employing DGB offers significantly higher transmission bandwidth compared to the Lambertian beam (LB) for a wide divergence angle.
引用
收藏
页码：1316 / 1319
页数：4
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