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Decoding suprathreshold stochastic resonance with optimal weights. (English) Zbl 1374.94633

Summary: We investigate an array of stochastic quantizers for converting an analog input signal into a discrete output in the context of suprathreshold stochastic resonance. A new optimal weighted decoding is considered for different threshold level distributions. We show that for particular noise levels and choices of the threshold levels optimally weighting the quantizer responses provides a reduced mean square error in comparison with the original unweighted array. However, there are also many parameter regions where the original array provides near optimal performance, and when this occurs, it offers a much simpler approach than optimally weighting each quantizer’s response.

MSC:

94A12 Signal theory (characterization, reconstruction, filtering, etc.)
91A28 Signaling and communication in game theory
60G35 Signal detection and filtering (aspects of stochastic processes)
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