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An Energy-Efficient Cooperative MIMO Transmission Scheme for Wireless Sensor Networks

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5 Author(s)
Wenqing Cheng ; Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol. ; Kanru Xu ; Wei Liu ; Zongkai Yang
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Energy-constrained wireless sensor networks require robust and energy-efficient wireless communication protocols to minimize the energy consumption as much as possible. Cooperative MIMO transmission is one of the new solutions to this problem. In this paper, we first analyze the energy efficiency of cooperative MIMO transmission with the consideration of the channel training overhead. Then, we design a LEACH based single-hop transmission scheme using cooperative MIMO techniques. An optimization model is proposed to find the optimum number of cooperative nodes, clusters and transmission rates. Simulation results show that tremendous energy saving is possible with judicious choice of designed protocol parameters even considering the local circuit energy cost and STBC training overhead

Published in:

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Date of Conference:

22-24 Sept. 2006