A novel cluster-based cooperative MIMO scheme for multi-hop wireless sensor networks

  • Authors:
  • Yong Yuan;Min Chen;Taekyoung Kwon

  • Affiliations:
  • Department of Electronics and Information, Huazhong University of Science and Technology, Wuhan, China;Department of Electrical and Computer Engineering, University of British Columbia, BC, Canada;School of Computer Science and Engineering, Seoul National University, Seoul, South Korea

  • Venue:
  • EURASIP Journal on Wireless Communications and Networking
  • Year:
  • 2006

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Abstract

A cluster-based cooperative multiple-input-multiple-output (MIMO) scheme is proposed to reduce the adverse impacts caused by radio irregularity and fading in multi-hop wireless sensor networks. This scheme extends the LEACH protocol to enable the multi-hop transmissions among clusters by incorporating a cooperative MIMO scheme into hop-by-hop transmissions. Through the adaptive selection of cooperative nodes and the coordination between multi-hop routing and cooperative MIMO transmissions, the scheme can gain effective performance improvement in terms of energy efficiency and reliability. Based on the energy consumption model developed in this paper, the optimal parameters to minimize the overall energy consumption are found, such as the number of clusters and the number of cooperative nodes. Simulation results exhibit that the proposed scheme can effectively save energy and prolong the network lifetime.