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Needle in a cross-layer sensor stack

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7 Author(s)
Iyer, V. ; Int. Inst. of Inf. Technol., Hyderabad, India ; Iyengar, S.S. ; Murthy, G.R. ; Srinathan, K.
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In this problem, the process start with real-valued inputs and are supposed to decide eventually on real-valued outputs. The process is permitted to send real-valued data in messages. Instead of having to agree exactly, as in the ordinary agreement problem, this time the requirement is just that they agree with within a small positive real-valued tolerance ε. In the standard implementation agreement problem converges to a consistent value for each sensor measurement, which is nonfaculty using Byzantine algorithm with at-least n >; 3 faulty sensors. We define a pre-processing BestBasis cost function which allows to find a coherent range, which can be measured using intra-sensor in an ensemble of real-values. The overlap of the range is calculated by using a clique, with a runtime of O(nk) in the worst-case, where the size of clique, k, is a variable. The computation of the pre-processing takes O log(D), where D is the number of levels in a sparse signal basis. Which are some times analogously compared to needle in a hay stack definition.

Published in:

Advanced Communication Technology (ICACT), 2011 13th International Conference on

Date of Conference:

13-16 Feb. 2011