Open Access

A Novel Cluster-Based Cooperative MIMO Scheme for Multi-Hop Wireless Sensor Networks

EURASIP Journal on Wireless Communications and Networking20062006:072493

Received: 4 November 2005

Accepted: 26 May 2006

Published: 20 June 2006


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.


Authors’ Affiliations

Department of Electronics and Information, Huazhong University of Science and Technology
Department of Electrical and Computer Engineering, University of British Columbia
School of Computer Science and Engineering, Seoul National University


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© Yong Yuan et al. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.