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Scaling Law of an Opportunistic Power Allocation Scheme for Amplify-and-Forward Wireless Sensor Networks

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2 Author(s)
Javier Matamoros ; Centre Tecnol¿gic de Telecomunicacions de Catalunya (CTTC), 08860 Castelldefels (Barcelona), Spain, Av. Carl Friedrich Gauss, 7 (Building B4) ; Carles Anton-Haro

In this letter, we address the problem of decentralized parameter estimation with Amplify-and-Forward Wireless Sensor Networks (WSNs). We focus on a previously proposed Opportunistic Power Allocation (OPA) scheme and derive the scaling law which determines how distortion decreases when the number of sensors grows without bound. Performance is assessed and compared with that of Uniform Power Allocation (UPA) and optimal Water-Filling (WF) strategies.

Published in:

IEEE Communications Letters  (Volume:15 ,  Issue: 2 )