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Sociedade Brasileira de Telecomunicações

Diffusion Constant Modulus Algorithm for Wireless Sensor Networks

Considering a wireless sensor network in which each node is capable of sensing, computing and communicating with each other, avoiding the need of a fusion center, several distributed algorithms have been proposed in the last years, searching to solve a parameter estimation problem. The large majority of such methods are supervised, needing a training sequence for adaptation. In this paper we propose a blind diffusion algorithm based on the constant modulus algorithm (CMA). We show that the network cooperation enhances the performance of the method when compared to a non-cooperative scheme, and that it exhibits additional robustness by avoiding local minima convergence.

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