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Determination of optimal transmission power in wireless relay networks with generalized error model

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3 Author(s)
Hanbyul Seo ; Seoul Nat. Univ., Seoul ; Inyoung Mok ; Byeong Gi Lee

In this letter, we investigate the power minimization problem while supporting the required reliability in wireless multi-hop relay networks. The novelty of the formulation is that it assumes a generalized relation between the power consumed in the transmitter and the packet reception rate in the receiver and, in addition, it takes into consideration the error detection capability of each relay node that can prevent unnecessary error propagation. We derive the optimality condition and provide a method that determines the optimal transmission power of each relay node sequentially. Numerical examples reveal that the optimal power allocation renders notable power saving effect while supporting the required level of reliability.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:6 ,  Issue: 12 )

Date of Publication:

December 2007

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