DISTRIBUTED BEAMFORMING FOR WIRELESS SENSOR NETWORKS WITH RANDOM NODE LOCATION Conference Paper uri icon

abstract

  • Due to the unsupervised nature of wireless sensor networks (WSNs), intensive communications are required among the selected nodes to reach a consensus and synchronize prior to entering a distributed beamforming (DBF) procedure. Therefore, a sensible approach to select the nodes should not only take into account the required beampattern, but also should aim to preserve the inter-node connectivity and the network energy. We show for a uniformly distributed WSN that when the nodes are selected from a ring of proper radii, the resulting beampattern mainlobe is narrower compared to that of the classical DBF technique proposed in [1]. At the same time, our proposed technique may preserve a substantial amount of network energy and reduce the probability of network disconnectivity. Directivity of the proposed DBF technique is analyzed and an extension of the technique to a multi-ring case is presented. It is shown that the sidelobe peaks can be considerably decreased if the nodes are selected from multiple concentric rings. 2009 IEEE.

name of conference

  • 2009 IEEE International Conference on Acoustics, Speech and Signal Processing

published proceedings

  • 2009 IEEE International Conference on Acoustics, Speech and Signal Processing

altmetric score

  • 0.25

author list (cited authors)

  • Zarifi, K., Affes, S., & Ghrayeb, A.

citation count

  • 24

complete list of authors

  • Zarifi, Keyvan||Affes, Sofiene||Ghrayeb, Ali

publication date

  • April 2009