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A robust cooperative relaying strategy for wireless networks using semidefinite constraints and worst-case performance optimization

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4 Author(s)
Krishna, R. ; Adv. Signal Process. Group, Loughborough Univ., Loughborough ; Cumanan, K. ; Sharma, V. ; Lambotharan, S.

A robust signal forwarding technique for wireless sensor and mesh networks using semidefinite constraints is proposed. The scheme considers a multiple source destination scenario where a set of relays assists forwarding signals from sources to destinations. In our work we consider a realistic environment where actual channel state information (CSI) available to the relays are in error. We propose to optimize the relay transceiver within a worst-case performance optimization framework using semidefinite constraints. Simulations demonstrate that in the presence of imperfect CSI, the proposed scheme outperforms a non-robust scheme.

Published in:

Information Theory and Its Applications, 2008. ISITA 2008. International Symposium on

Date of Conference:

7-10 Dec. 2008