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Open AccessArticle

Practical Considerations in the Implementation of Collaborative Beamforming on Wireless Sensor Networks

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Departament de Informàtica, Escola Tècnica Superior d’Enginyeria, Universitat de València, Avd. de la Universidad S/N, 46100 Burjassot, Spain
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Institut de Robòtica, Universitat de València, Catedrático José Beltran, 2, 46980 Paterna, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Gonzalo Pajares Martinsanz
Sensors 2017, 17(2), 237; https://doi.org/10.3390/s17020237
Received: 28 November 2016 / Revised: 18 January 2017 / Accepted: 19 January 2017 / Published: 26 January 2017
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2016)
Wireless Sensor Networks (WSNs) are composed of spatially distributed autonomous sensor devices, named motes. These motes have their own power supply, processing unit, sensors and wireless communications However with many constraints, such as limited energy, bandwidth and computational capabilities. In these networks, at least one mote called a sink, acts as a gateway to connect with other networks. These sensor networks run monitoring applications and then the data gathered by these motes needs to be retrieved by the sink. When this sink is located in the far field, there have been many proposals in the literature based on Collaborative Beamforming (CB), also known as Distributed or Cooperative Beamforming, for these long range communications to reach the sink. In this paper, we conduct a thorough study of the related work and analyze the requirements to do CB. In order to implement these communications in real scenarios, we will consider if these requirements and the assumptions made are feasible from the point of view of commercial motes and their constraints. In addition, we will go a step further and will consider different alternatives, by relaxing these requirements, trying to find feasible assumptions to carry out these types of communications with commercial motes. This research considers the nonavailability of a central clock that synchronizes all motes in the WSN, and all motes have identical hardware. This is a feasibility study to do CB on WSN, using a simulated scenario with randomized delays obtained from experimental data from commercial motes. View Full-Text
Keywords: wireless sensor networks; collaborative beamforming; distributed beamforming; cooperative beamforming wireless sensor networks; collaborative beamforming; distributed beamforming; cooperative beamforming
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Felici-Castell, S.; Navarro, E.A.; Pérez-Solano, J.J.; Segura-García, J.; García-Pineda, M. Practical Considerations in the Implementation of Collaborative Beamforming on Wireless Sensor Networks. Sensors 2017, 17, 237.

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