scholarly journals Wireless Sensor Networks Using Sub-Pixel Optical Camera Communications: Advances in Experimental Channel Evaluation

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2739
Author(s):  
Vicente Matus ◽  
Victor Guerra ◽  
Cristo Jurado-Verdu ◽  
Stanislav Zvanovec ◽  
Rafael Perez-Jimenez
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Optical Devices ◽  
Wireless Sensor ◽  
The Novel ◽  
Atmospheric Conditions ◽  
Optical Wireless ◽  
Optical Wireless Communications ◽  
Channel Quality ◽  
Data Throughput

Optical wireless communications in outdoor scenarios are challenged by uncontrollable atmospheric conditions that impair the channel quality. In this paper, different optical camera communications (OCC) equipment are experimentally studied in the laboratory and the field, and a sub-pixel architecture is raised as a potential solution for outdoor wireless sensor networks (WSN) applications, considering its achievable data throughput, the spatial division of sources, and the ability of cameras to overcome the attenuation caused by different atmospheric conditions such as rain, turbulence and the presence of aerosols. Sub-pixel OCC shows particularly adequate capabilities for some of the WSN applications presented, also in terms of cost-effectiveness and scalability. The novel topology of sub-pixel projection of multiple transmitters over the receiver using small optical devices is presented as a solution using OCC that re-uses camera equipment for communication purposes on top of video-monitoring.

Low-energy PSO-based node positioning in optical wireless sensor networks

Optik ◽  
2019 ◽  
Vol 181 ◽  
pp. 378-382 ◽  
Author(s):  
Ziwei Yan ◽  
Pratik Goswami ◽  
Amrit Mukherjee ◽  
Lixia Yang ◽  
Sidheswar Routray ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Low Energy ◽  
Wireless Sensor ◽  
Optical Wireless

scholarly journals Performance Analysis of Connectivity and Localization in Multi-Hop Underwater Optical Wireless Sensor Networks

2019 ◽  
Vol 18 (11) ◽  
pp. 2604-2615 ◽  
Author(s):  
Nasir Saeed ◽  
Abdulkadir Celik ◽  
Mohamed-Slim Alouini ◽  
Tareq Y. Al-Naffouri
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Performance Analysis ◽  
Wireless Sensor ◽  
Optical Wireless

scholarly journals Localization of Energy Harvesting Empowered Underwater Optical Wireless Sensor Networks

2019 ◽  
Vol 18 (5) ◽  
pp. 2652-2663 ◽  
Author(s):  
Nasir Saeed ◽  
Abdulkadir Celik ◽  
Tareq Y. Al-Naffouri ◽  
Mohamed-Slim Alouini
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Energy Harvesting ◽  
Wireless Sensor ◽  
Optical Wireless

Reconfigurable optical wireless sensor networks

2004 ◽  
Author(s):  
Jaime Llorca ◽  
Aniket Desai ◽  
Uzi Vishkin ◽  
Christopher C. Davis ◽  
Stuart D. Milner
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Optical Wireless

A Novel Energy-Balanced Dynamic Routing Algorithm for Wireless Sensor Networks

2014 ◽  
Vol 681 ◽  
pp. 235-238
Author(s):  
Xin Xin Zhou ◽  
Yan Zhao
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Data Transfer ◽  
Routing Algorithm ◽  
Dynamic Routing ◽  
Residual Energy ◽  
Wireless Sensor ◽  
The Novel ◽  
Balance Energy ◽  
Transfer Tasks

Wireless sensor networks (WSNs) is taking an increasing role in our lives. Because the energy of the sensors is limited how to efficiently use the energy to prolong the lifecycle of the sensor networks is very important. In this paper, a novel energy-balanced dynamic routing algorithm based on ACO is proposed. The novel routing algorithm can dynamically choose routing according to the residual energy of the sensors and the sensors with more power is taken more data transfer tasks. The simulation results show that the proposed routing algorithm can effectively balance energy consumption and prolong the lifecycle of the networks.

Improved Data Throughput Collection in Energy Harvesting Wireless Sensor Networks Using a Mobile Data Mule

2019 ◽  
Vol 13 ◽  
Author(s):  
Naween Kumar ◽  
Dinesh Dash
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Energy Harvesting ◽  
Heuristic Algorithms ◽  
Data Gathering ◽  
The Other ◽  
Wireless Sensor ◽  
Data Throughput ◽  
Data Mule ◽  
Better Than

Background: In energy harvesting wireless sensor networks (EH-WSNs), sensors are harvesting energy from the renewable environment to make their operations endless and uninterrupted. However, in such a network, the time-varying nature of harvesting imposes a challenging issue in obtaining improved data-throughput. The use of a static-sink in EH-WSNs to improve data-throughput is less reliable because there is no assurance of the network connectivity. To alleviate such shortcomings, a data mule (MDM) has been introduced in EH-WSN for collecting sensors’ data. In this article, the MDM-based distance constrained tour finding problem is formulated such that the data-throughput can be improved within a given delay constraint. Method: To solve the problem, we devise two different heuristic algorithms based on two different metrics. Result: The obtained experimental results demonstrate that the devised algorithms are more effective than the existing algorithms in terms of data-throughput. Conclusion: The data-throughput values of the first proposed algorithm are about 6.14% and 3.56% better than the other for two different data gathering time durations of 100 sec and 800 sec. The data-throughput values of the second proposed algorithm are about 5.03% and 5.25% better than the other for two different data gathering time durations of 100 sec and 800 sec.

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