Clustering and Beamforming for Efficient Communication in Wireless Sensor Networks
| Autor: | Juan F. Valenzuela-Valdes, M. A. Lopez-Gordo, Francisco Luna-Valero, Pablo Padilla, Rafael Marcos Luque-Baena, Francisco Porcel-Rodríguez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Beamforming
Engineering Real-time computing 02 engineering and technology lcsh:Chemical technology Biochemistry Article Analytical Chemistry beamforming 0202 electrical engineering electronic engineering information engineering ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS lcsh:TP1-1185 Electrical and Electronic Engineering wireless sensors networks energy efficiency optimization techniques Cluster analysis Instrumentation business.industry Node (networking) Isotropic radiator 020206 networking & telecommunications Atomic and Molecular Physics and Optics Key distribution in wireless sensor networks Transmission (telecommunications) 020201 artificial intelligence & image processing Antenna (radio) business Wireless sensor network |
| Zdroj: | Sensors, Vol 16, Iss 8, p 1334 (2016) Sensors (Basel, Switzerland) Sensors; Volume 16; Issue 8; Pages: 1334 |
| ISSN: | 1424-8220 |
| Popis: | Energy efficiency is a critical issue for wireless sensor networks (WSNs) as sensor nodes have limited power availability. In order to address this issue, this paper tries to maximize the power efficiency in WSNs by means of the evaluation of WSN node networks and their performance when both clustering and antenna beamforming techniques are applied. In this work, four different scenarios are defined, each one considering different numbers of sensors: 50, 20, 10, five, and two nodes per scenario, and each scenario is randomly generated thirty times in order to statistically validate the results. For each experiment, two different target directions for transmission are taken into consideration in the optimization process (φ = 0° and θ = 45°; φ = 45°, and θ = 45°). Each scenario is evaluated for two different types of antennas, an ideal isotropic antenna and a conventional dipole one. In this set of experiments two types of WSN are evaluated: in the first one, all of the sensors have the same amount of power for communications purposes; in the second one, each sensor has a different amount of power for its communications purposes. The analyzed cases in this document are focused on 2D surface and 3D space for the node location. To the authors’ knowledge, this is the first time that beamforming and clustering are simultaneously applied to increase the network lifetime in WSNs. |
| Databáze: | OpenAIRE |
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