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İçortam Görünür Işık Haberleşme Kanallarında Güç Analizi
2021
Journal:  
Avrupa Bilim ve Teknoloji Dergisi
Author:  
Abstract:

Optik kablosuz haberleşme teknolojisi, radyo frekansı iletişiminin önemli bir alternatifi olarak ortaya çıkmıştır. RF iletişimdeki bandgenişliğinin sınırlı olması nedeniyle, kullanıcıların yüksek hızlı kablosuz iletişim sistemlerine olan ihtiyacı artmaktadır. RF sisteminin kontrolsüz radyasyon, sınırlı bandgenişliği, düzenlenmiş frekans ve mobil kullanıcı sayısının artması gibi birtakım kısıtlamaları nedeniyle, RF tabanlı iletişim son yıllarda spektrum darlığı sorunuyla karşı karşıya kalmıştır. RF’ten farklı olarak görünür ışık haberleşmesi (VLC), iletim kanalları için görünür ışık spektrum tayfında daha yüksek frekans bantları tercih edilir. Band genişliği avantajı nedeniyle VLC için görünür ışık frekans bandı kullanılmakta, bu sayede yüksek aktarım hızı ve elektromanyetik girişime dayanıklı olduğu için büyük avantaj sağlanmaktadır. Bu açıdan optik kablosuz iletişim, yeni nesil kablosuz iletişim sistemleri için umut verici bir çözüm olarak değerlendirilmektedir. Bu çalışmada VCL sistemlerinin tek dallı doğrudan görüş (Line-of-sight, LOS) düz sönümlü kanallarda güç analizi incelenmiş, kanal darbe cevabı ve optik güç dağılımları analiz edilmiştir.

Keywords:

Power Analysis in visible light communication channels
2021
Author:  
Abstract:

Optical wireless communication technology has emerged as an important alternative to radio frequency communication. As the bandwidth in RF communication is limited, the need of users for high-speed wireless communications systems is increasing. Due to a number of restrictions, such as uncontrolled radiation, limited bandwidth, regulated frequency and the increase in the number of mobile users, RF-based communication has faced the problem of spectrum density in recent years. Unlike RF, visible light communication (VLC) is preferable for broadcast channels with higher frequency bands in the visible light spectrum range. Due to the bandwidth advantage, the visible light frequency band for VLC is used, making it a great advantage because it is high transmission speed and electromagnetic injection resistant. In this regard, optical wireless communication is considered a hopeful solution for the next generation of wireless communications systems. In this study, the power analysis of the line-of-sight (LOS) direct vision of the VCL systems was studied, channel impact response and optical power distribution were analyzed.

Keywords:

Power Analysis For Indoor Visible Light Communication Channels
2021
Author:  
Abstract:

One of the most important alternative techniques for radio frequency communications is optical wireless communication technology. Due to the RF bandwidth limitation, the need for high speed wireless communication systems has been increasing in recent years. Due to the limitations of the RF system such as uncontrolled radiation, limited bandwidth, regulated frequency, and the increase in the number of mobile users, RF-based communication has faced a serious spectrum problem in recent years. Visible light communication (VLC) uses higher frequency bands in the visible light spectrum for the transmission medium. Considering the visible light spectrum due to its bandwidth advantage, VLC is advantageous as it offers high transmission speed and strong resistance to electromagnetic interference. In this respect, optical wireless communication is considered as a promising solution for new generation wireless communication systems. In this paper we investigate channel impulse response and power analysis of VLC systems over single-tap Line-of-sight (LOS) flatfading channels.

Keywords:

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Avrupa Bilim ve Teknoloji Dergisi

Field :   Fen Bilimleri ve Matematik; Mühendislik

Journal Type :   Uluslararası

Metrics
Article : 3.175
Cite : 6.036
Quarter
Basic Field of Science and Mathematics
Q2
43/135

Basic Field of Engineering
Q2
30/114

Avrupa Bilim ve Teknoloji Dergisi