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Virtual MIMO-based cooperative communication for energy-constrained wireless sensor networks

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1 Author(s)
Jayaweera, S.K. ; Dept. of Electr. & Comput. Eng., Wichita State Univ., KS, USA

An energy-efficient virtual multiple-input multiple-output (MIMO)-based communication architecture is proposed for distributed and cooperative wireless sensor networks. Assuming a space-time block coding (STBC) based MIMO system, the energy and delay efficiencies of the proposed scheme are derived using semi-analytic techniques. The dependence of these efficiency values on physical channel propagation parameters, fading coherence time and the amount of required training is also investigated. The results show that with judicious choice of design parameters the virtual MIMO technique can be made to provide significant energy and delay efficiencies, even after allowing for additional training overheads.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:5 ,  Issue: 5 )

Date of Publication:

May 2006

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