Cooperative Space-Time Block Codes for Wireless Video Sensor Networks

  • Authors:
  • Marcelo Portela Sousa;Ajey Kumar;Rafael F. Lopes;Waslon T. Lopes;Marcelo Sampaio Alencar

  • Affiliations:
  • Department of Electrical Engineering, Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande, Brazil 58109-970;Department of Electrical Engineering, Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande, Brazil 58109-970;Department of Electrical Engineering, Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande, Brazil 58109-970;Department of Electrical Engineering, Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande, Brazil 58109-970;Department of Electrical Engineering, Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande, Brazil 58109-970

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2012

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Abstract

Wireless video sensor networks (WVSNs) are gaining popularity due to numerous potential applications such as video surveillance, environmental and habitat monitoring, and so on. Considering large-scale WVSNs, in which the sink node is not within the range of all other nodes, a multi-hop operation is desired. This paper proposes a novel cooperative system that uses space time-block codes to enhance the performance of multi-hop wireless video sensor networks. The proposed scheme is designed to deal with large-scale WVSNs, by adapting the cluster size and extending the cooperation between the cluster-heads. The performance comparison between the proposed system and a non-cooperative scheme is presented based on network lifetime for varying propagation scenarios, number of camera nodes, and on the quality of transmitted videos in a WVSN. Simulation results show an improvement in performance for the proposed system.