In this paper the problem of link failure detection in multiple-input, multiple-output wireless networks is addressed. Space-time coding of the probing signal is performed to optimize the detection capabilities, and the convex combination of the Kullback-Leibler divergences between the densities of the observations under the two hypotheses is minimized under a constraint on the transmitted energy. A closed form expression of the structure of the optimum code-matrix is found, and a simple numerical algorithm to find the optimal power allocation is given.
Link failure detection in MIMO wireless networks
GROSSI, Emanuele;LOPS, Marco
2012-01-01
Abstract
In this paper the problem of link failure detection in multiple-input, multiple-output wireless networks is addressed. Space-time coding of the probing signal is performed to optimize the detection capabilities, and the convex combination of the Kullback-Leibler divergences between the densities of the observations under the two hypotheses is minimized under a constraint on the transmitted energy. A closed form expression of the structure of the optimum code-matrix is found, and a simple numerical algorithm to find the optimal power allocation is given.File in questo prodotto:
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