Distributed Primal-Dual Algorithm with Variable Parameters and Bidirectional Incremental Cooperation
Subject Areas : electrical and computer engineering
1 - Urmia University of Technology
Keywords: Stock variable parameter algorithm, distributed reconstruction, compressive sensing, bidirectional incremental mode,
Abstract :
Special conditions of wireless sensor networks, such as energy limitation, make it essential to accelerate the convergence of algorithms in this field, especially in the distributed compressive sensing (DCS) scenarios, which have a complex reconstruction phase. This paper presents a DCS reconstruction algorithm that provides a higher convergence rate. The proposed algorithm is a distributed primal-dual algorithm in a bidirectional incremental cooperation mode where the parameters change with time. The parameters are changed systematically in the convex optimization problems in which the constraint and cooperation functions are strongly convex. The proposed method is supported by simulations, which show the higher performance of the proposed algorithm in terms of convergence rate, even in stricter conditions such as the small number of measurements or the lower degree of sparsity.
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