Next Article in Journal
Laboratory Evaluations of Correction Equations with Multiple Choices for Seed Low-Cost Particle Sensing Devices in Sensor Networks
Previous Article in Journal
Stress Distribution Analysis on Hyperspectral Corn Leaf Images for Improved Phenotyping Quality
Open AccessArticle

Performance Analysis of Cooperative and Non-Cooperative Relaying over VLC Channels

1
Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M15 6BH, UK
2
School of Science, Engineering and Environment, University of Salford, Salford M5 4WT, UK
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(13), 3660; https://doi.org/10.3390/s20133660
Received: 4 June 2020 / Revised: 24 June 2020 / Accepted: 26 June 2020 / Published: 30 June 2020
(This article belongs to the Section Communications)
The line-of-sight (LoS) channel is one of the requirements for efficient data transmission in visible-light communications (VLC), but this cannot always be guaranteed in indoor applications for a variety of reasons, such as moving objects and the layout of rooms. The relay-assisted VLC system is one of the techniques that can be used to address this issue and ensures seamless connectivity. This paper investigates the performance of half-duplex (HD) conventional DF relay system and cooperative systems (i.e., selective DF (SDF) and incremental DF (IDF)) over VLC channels in terms of outage probability and energy consumption. Analytical expressions for both outage probability and the minimum energy-per-bit performance of the aforementioned relaying systems are derived. Furthermore, Monte Carlo simulations are provided throughout the paper to validate the derived expressions. The results show that exploiting SDF and IDF relaying schemes can achieve approximately 25% and 15% outage probability enhancement compared to single-hop and DF protocols, respectively. The results also demonstrate that the performance of the single-hop VLC system deteriorates when the end-to-end distances become larger. For example, when the vertical distance is 3.5m, the single-hop approach consumes 20%, 40% and 45% more energy in comparison to the DF, SDF, and IDF approaches, respectively. View Full-Text
Keywords: relaying protocols; cooperative relaying systems; energy efficiency; outage probability; visible-light communications (VLC) relaying protocols; cooperative relaying systems; energy efficiency; outage probability; visible-light communications (VLC)
Show Figures

Figure 1

MDPI and ACS Style

Gheth, W.; Rabie, K.M.; Adebisi, B.; Ijaz, M.; Harris, G. Performance Analysis of Cooperative and Non-Cooperative Relaying over VLC Channels. Sensors 2020, 20, 3660.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop