Node-specific diffusion LMS-based distributed detection over adaptive networks
| Autor: | Abdelhak M. Zoubir, Jorge Plata-Chaves, Michael Muma, Sara Al-Sayed, Marc Moonen |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Diffusion (acoustics) SISTA Computer science Distributed computing Node (networking) Multi-task learning 020206 networking & telecommunications 02 engineering and technology Data modeling 020901 industrial engineering & automation Distributed algorithm Adaptive system Signal Processing 0202 electrical engineering electronic engineering information engineering Algorithm design Electrical and Electronic Engineering |
| Popis: | © 2017 IEEE. Diffusion adaptation techniques have shown great promise in addressing the problem of node-specific distributed estimation where the nodes in the network are interested in different, possibly overlapping, sets of parameters. In thiswork, node-specific distributed detection, which has remained largely unexamined, is considered. In particular, the problem is formulated as one of binary hypothesis testing at each node for each of its parameters of interest. A distributed, online solution for this problem is sought based on diffusion adaptation techniques. In this setting, a signal to be detected by one node constitutes interference that may compromise the ability of the other nodes to detect their signals of interest reliably. Under mild assumptions on the data and network, it is shown that, for sufficiently small adaptation step-sizes, interference can be kept in check. Local detectors are developed where the test-statistics and thresholds adapt to changing conditions in real time. The distributed algorithm is analyzed; and its detection performance characterized and illustrated through numerical simulations. ispartof: IEEE Transactions on Signal Processing vol:66 issue:3 pages:682-697 status: published |
| Databáze: | OpenAIRE |
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