scholarly journals Performance Evaluation of Relay Selection Schemes in Beacon-Assisted Dual-Hop Cognitive Radio Wireless Sensor Networks under Impact of Hardware Noises

Sensors ◽  
2018 ◽  
Vol 18 (6) ◽  
pp. 1843 ◽  
Author(s):  
Tran Hieu ◽  
Tran Duy ◽  
Le Dung ◽  
Seong Choi
Keyword(s):  
Wireless Sensor Networks ◽  
Performance Evaluation ◽  
Cognitive Radio ◽  
Sensor Networks ◽  
Relay Selection ◽  
Wireless Sensor

scholarly journals Performance Evaluation of Relay Selection Schemes in Beacon-Assisted Dual-hop Cognitive Radio Wireless Sensor Networks under Impact of Hardware Noises

2018 ◽  
Author(s):  
Tran Dinh Hieu ◽  
Tran Trung Duy ◽  
Le The Dung ◽  
Seong Gon Choi
Keyword(s):  
Wireless Sensor Networks ◽  
Performance Evaluation ◽  
Cognitive Radio ◽  
Sensor Networks ◽  
Relay Selection ◽  
Wireless Sensor ◽  
Secondary Source ◽  
Source Information ◽  
Opportunistic Relay Selection ◽  
The Impact

To solve the problem of energy constraint and spectrum scarcity for cognitive radio wireless sensor networks (CR-WSNs), an underlay decode-and-forward relaying scheme is considered, where the energy constrained secondary source and relay nodes are capable of harvesting energy from a multi-antenna power beacon (PB) and using that harvested energy to forward the source information to the destination. Based on the time switching receiver architecture, three relaying protocols, namely, hybrid partial relay selection (H-PRS), conventional opportunistic relay selection (C-ORS), and best opportunistic relay selection (B-ORS) protocols are considered to enhance the end-to-end performance under the joint impact of maximal interference constraint and transceiver hardware impairments. For performance evaluation and comparison, we derive exact and asymptotic closed-form expressions of outage probability (OP) and throughput (TP) to provide significant insights into the impact of our proposed protocols on the system performance over Rayleigh fading channel. Finally, simulation results validate the theoretical results.

On Real-Time Performance Evaluation of Volcano-Monitoring Systems With Wireless Sensor Networks

2015 ◽  
Vol 15 (6) ◽  
pp. 3514-3523 ◽  
Author(s):  
Roman Lara ◽  
Diego Benitez ◽  
Antonio Caamano ◽  
Marco Zennaro ◽  
Jose Luis Rojo-Alvarez
Keyword(s):  
Wireless Sensor Networks ◽  
Performance Evaluation ◽  
Sensor Networks ◽  
Real Time ◽  
Volcano Monitoring ◽  
Wireless Sensor ◽  
Monitoring Systems ◽  
Time Performance
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