scholarly journals Measuring and estimating the propagation path loss and shadowing effects for Marine Wireless Sensor Networks at 5.8 GHZ

2012 ◽  
Author(s):  
J. C. Reyes-Guerrero ◽  
Gordan Sisul ◽  
Luis A. Mariscal
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Path Loss ◽  
Wireless Sensor ◽  
Propagation Path ◽  
Shadowing Effects

scholarly journals Propagation Analysis for Wireless Sensor Networks Applied to Viticulture

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Felipe Pinheiro Correia ◽  
Marcelo Sampaio de Alencar ◽  
Waslon Terllizzie Araújo Lopes ◽  
Mauro Soares de Assis ◽  
Brauliro Gonçalves Leal
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Path Loss ◽  
Fruit Production ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Propagation Path ◽  
Propagation Mechanism ◽  
Financial Return ◽  
Guided Propagation

Wireless sensor networks have been proposed as a solution to obtain soil and environment information in large distributed areas. The main economic activity of the São Francisco Valley region in the Northeast of Brazil is the irrigated fruit production. The region is one of the major agricultural regions of the country. Grape plantations receive large investments and provide good financial return. However, the region still lacks electronic sensing systems to extract adequate information from plantations. Considering these facts, this paper presents a study of path loss in grape plantations for a 2.4 GHz operating frequency. In order to determine the position of the sensor nodes, the research dealt with various environmental factors that influence the intensity of the received signal. It has been noticed that main plantation aisles favor the guided propagation, and the vegetation along the secondary plantation aisles compromises the propagation. Diffraction over the grape trees is the main propagation mechanism in the diagonal propagation path. Transmission carried out above the vineyard showed that reflection on the top of the trees is the main mechanism.

An Energy-Balance Based Distributed Topology Control Algorithm for Wireless Sensor Networks

2012 ◽  
Vol 490-495 ◽  
pp. 1392-1396 ◽  
Author(s):  
Chu Hang Wang
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Topology Control ◽  
Control Algorithm ◽  
Path Loss ◽  
Network Connectivity ◽  
Premature Death ◽  
Residual Energy ◽  
Wireless Sensor

Topology control is an efficient approach which can reduce energy consumption for wireless sensor networks, and the current algorithms mostly focus on reducing the nodes’ energy consumption by power adjusting, but pay little attention to balance energy consumption of the whole network, which results in premature death of many nodes. Thus, a distributed topology control algorithm based on path-loss and residual energy (PRTC) is designed in this paper. This algorithm not only maintains the least loss links between nodes but also balances the energy consumption of the network. The simulation results show that the topology constructed by PRTC can preserve network connectivity as well as extend the lifetime of the network and provide good performance of energy consumption.

scholarly journals An indoor path loss model for wireless sensor networks

2018 ◽  
Vol 3 (4) ◽  
pp. 192 ◽  
Author(s):  
Mohammad Abdel Rahim ◽  
Mohamed Hadi Habaebi ◽  
Jalel Chebil ◽  
Aisha Hassan A. Hashim ◽  
Musse Mohamud Ahmed ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Path Loss ◽  
Wireless Sensor ◽  
Loss Model ◽  
Path Loss Model

New empirical path loss model for wireless sensor networks in mango greenhouses

2016 ◽  
Vol 127 ◽  
pp. 553-560 ◽  
Author(s):  
Auda Raheemah ◽  
Naseer Sabri ◽  
M.S. Salim ◽  
Phaklen Ehkan ◽  
R. Badlishah Ahmad
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Path Loss ◽  
Wireless Sensor ◽  
Loss Model ◽  
Path Loss Model

Signal Propagation and Analysis in Wireless Underground Sensor Networks

2019 ◽  
Vol 41 ◽  
pp. 60-78
Author(s):  
Adamu Murtala Zungeru ◽  
Joseph Chuma ◽  
Mmoloki Mangwala ◽  
Boyce Sigweni ◽  
Oduetse Matsebe
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Magnetic Induction ◽  
Signal To Noise Ratio ◽  
Path Loss ◽  
Signal Propagation ◽  
Pulse Power ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Nonlinear Program

The most challenging issue in the design of wireless sensor networks for the application of localization in the underground environment, mostly for miner’s location, is the sensor nodes’ energy consumption, efficiency and communication. Underground Wireless Sensor Networks are active and promising area of application of Wireless Sensor Networks (WSNs), whereby sensor nodes perform sensing duties in the underground environment. Most of the communication techniques used in the underground environment experience a high path loss and hence, hinders the range needed for transmission. However, the available option to increase information transmission is to increase the transmission power which needs large size of apparatus which is also limited in the underground. To solve the mentioned problems, this paper proposed a Magnetic Induction based Pulse Power. Analytical results of the Magnetic Induction based Pulse Power with an ordinary magnetic induction communication technique show an improvement in Signal-to-Noise Ratio (SNR) and path loss with variation in distance between nodes and frequency of operation. This paper further formulates a nonlinear program to determine the optimal data (events) extraction in a grid based WUSNs.

scholarly journals Energy Consumption Analysis of Beamforming and Cooperative Schemes for Aircraft Wireless Sensor Networks

2020 ◽  
Vol 10 (12) ◽  
pp. 4374
Author(s):  
Seung-Hwan Kim ◽  
Jae-Woo Kim ◽  
Dong-Seong Kim
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Channel Model ◽  
Path Loss ◽  
Wireless Sensor ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
International Telecommunication Union ◽  
Better Than

In this paper, the eight schemes for aircraft wireless sensor networks are investigated, which are single-hop array beamforming schemes (including analog beamforming (ABF), and digital beamforming (DBF)), non-cooperative schemes (including single-hop and multi-hop schemes), cooperative schemes (including amplify and forward (AF), decode and forward (DF)), and incremental cooperative schemes (incremental decode and forward (IDF), and incremental amplify and forward (IAF)). To set up the aircraft wireless communication environment, we design the aircraft channel model by referring to the experimental parameters of the ITU (International Telecommunication Union)-R M.2283, which is composed of path loss, shadowing fading, and multi-path fading channel responses. To evaluate the performance, the conditions energy consumption and throughput analysis are performed. Through simulation results, the incremental cooperative scheme outperformed by 66.8% better at spectral efficiency 2 than the DBF scheme in terms of the energy consumption metric. Whereas, in terms of throughput metric, overall SNR (signal-to-noise ratio) ranged from −20 to 30 dB the beamforming scheme had the best performance in which the beamforming scheme at SNR 0 dB achieved 85.4% better than the multi-hop scheme. Finally, in terms of normalized throughput metric in low SNR range between −20 and 1 dB the ABF scheme had the best performance over the others in which the ABF at SNR 0 dB achieved 75.4% better than the multi-hop scheme. Whereas, in high SNR range between 2 and 30 dB the IDF scheme had the best performance in which the IDF at SNR 10 dB achieved 62.2% better than the multi-hop scheme.

scholarly journals Balanced Transmissions Based Trajectories of Mobile Sink in Homogeneous Wireless Sensor Networks

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Mariam Akbar ◽  
Nadeem Javaid ◽  
Wadood Abdul ◽  
Sanaa Ghouzali ◽  
Abid Khan ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Performance Metrics ◽  
Geometric Model ◽  
Data Gathering ◽  
Path Loss ◽  
Mobile Sink ◽  
Wireless Sensor ◽  
Network Nodes ◽  
Better Than

Mobile Sink (MS) based routing strategies have been widely investigated to prolong the lifetime of Wireless Sensor Networks (WSNs). In this paper, we propose two schemes for data gathering in WSNs: (i) MS moves on random paths in the network (RMS) and (ii) the trajectory of MS is defined (DMS). In both the schemes, the network field is logically divided into small squares. The center point of each partitioned area is the sojourn location of the MS. We present three linear programming based models: (i) to maximize network lifetime, (ii) to minimize path loss, and (iii) to minimize end to end delay. Moreover, a geometric model is proposed to avoid redundancy while collecting information from the network nodes. Simulation results show that our proposed schemes perform better than the selected existing schemes in terms of the selected performance metrics.

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