scholarly journals Random Access Compressed Sensing for Energy-Efficient Underwater Sensor Networks

2011 ◽  
Vol 29 (8) ◽  
pp. 1660-1670 ◽  
Author(s):  
Fatemeh Fazel ◽  
Maryam Fazel ◽  
Milica Stojanovic
Keyword(s):  
Sensor Networks ◽  
Compressed Sensing ◽  
Energy Efficient ◽  
Random Access ◽  
Underwater Sensor Networks

scholarly journals Energy-Efficient Packet Forwarding Scheme Based on Fuzzy Decision-Making in Underwater Sensor Networks

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4368
Author(s):  
Jitander Kumar Pabani ◽  
Miguel-Ángel Luque-Nieto ◽  
Waheeduddin Hyder ◽  
Pablo Otero
Keyword(s):  
Energy Consumption ◽  
Sensor Networks ◽  
Energy Efficient ◽  
Real Life ◽  
Base Station ◽  
Fuzzy Decision Making ◽  
Underwater Sensor Networks ◽  
Packet Forwarding ◽  
Node Number ◽  
The Impact

Underwater Wireless Sensor Networks (UWSNs) are subjected to a multitude of real-life challenges. Maintaining adequate power consumption is one of the critical ones, for obvious reasons. This includes proper energy consumption due to nodes close to and far from the sink node (gateway), which affect the overall energy efficiency of the system. These wireless sensors gather and route the data to the onshore base station through the gateway at the sea surface. However, finding an optimum and efficient path from the source node to the gateway is a challenging task. The common reasons for the loss of energy in existing routing protocols for underwater are (1) a node shut down due to battery drainage, (2) packet loss or packet collision which causes re-transmission and hence affects the performance of the system, and (3) inappropriate selection of sensor node for forwarding data. To address these issues, an energy efficient packet forwarding scheme using fuzzy logic is proposed in this work. The proposed protocol uses three metrics: number of hops to reach the gateway node, number of neighbors (in the transmission range of a node) and the distance (or its equivalent received signal strength indicator, RSSI) in a 3D UWSN architecture. In addition, the performance of the system is also tested with adaptive and non-adaptive transmission ranges and scalable number of nodes to see the impact on energy consumption and number of hops. Simulation results show that the proposed protocol performs better than other existing techniques or in terms of parameters used in this scheme.

scholarly journals Bayesian Compressive Sensing Based Optimized Node Selection Scheme in Underwater Sensor Networks

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2568 ◽  
Author(s):  
Ruisong Wang ◽  
Gongliang Liu ◽  
Wenjing Kang ◽  
Bo Li ◽  
Ruofei Ma ◽  
...  
Keyword(s):  
Sensor Networks ◽  
Compressed Sensing ◽  
Bayesian Estimation ◽  
Sensor Node ◽  
Optimization Problem ◽  
Sensor Nodes ◽  
Underwater Sensor Networks ◽  
Node Selection ◽  
Selection Scheme ◽  
Error Covariance

Information acquisition in underwater sensor networks is usually limited by energy and bandwidth. Fortunately, the received signal can be represented sparsely on some basis. Therefore, a compressed sensing method can be used to collect the information by selecting a subset of the total sensor nodes. The conventional compressed sensing scheme is to select some sensor nodes randomly. The network lifetime and the correlation of sensor nodes are not considered. Therefore, it is significant to adjust the sensor node selection scheme according to these factors for the superior performance. In this paper, an optimized sensor node selection scheme is given based on Bayesian estimation theory. The advantage of Bayesian estimation is to give the closed-form expression of posterior density function and error covariance matrix. The proposed optimization problem first aims at minimizing the mean square error (MSE) of Bayesian estimation based on a given error covariance matrix. Then, the non-convex optimization problem is transformed as a convex semidefinite programming problem by relaxing the constraints. Finally, the residual energy of each sensor node is taken into account as a constraint in the optimization problem. Simulation results demonstrate that the proposed scheme has better performance than a conventional compressed sensing scheme.

scholarly journals Topology Control for Energy-Efficient Localization in Mobile Underwater Sensor Networks Using Stackelberg Game

2019 ◽  
Vol 68 (2) ◽  
pp. 1487-1500 ◽  
Author(s):  
Yali Yuan ◽  
Chencheng Liang ◽  
Megumi Kaneko ◽  
Xu Chen ◽  
Dieter Hogrefe
Keyword(s):  
Sensor Networks ◽  
Energy Efficient ◽  
Topology Control ◽  
Stackelberg Game ◽  
Underwater Sensor Networks

Energy-Efficient Tree-Based Multipath Power Control for Underwater Sensor Networks

2012 ◽  
Vol 23 (11) ◽  
pp. 2107-2116 ◽  
Author(s):  
Junfeng Xu ◽  
Keqiu Li ◽  
Geyong Min ◽  
Kai Lin ◽  
Wenyu Qu
Keyword(s):  
Sensor Networks ◽  
Power Control ◽  
Energy Efficient ◽  
Underwater Sensor Networks
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