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AssigneeNational University Corporation Hokkaido University
InventorsSeiya Kasai, Yukihiro Tadokoro, Akihisa Ichiki
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A signal reproduction apparatus reproduces, from an input signal containing a weak signal which is a piece of transmission information and noise superimposed thereon, the weak signal through use of a stochastic resonance phenomenon. The apparatus includes N nonlinear elements NL1-NLN (N is a natural number equal to or greater than 2) which receive N reception signals R (split signals) split to N branch lines L1-LN, and output nonlinear output signals NLO1-NLON; N delay elements D1-DN which delay the nonlinear output signals by different times, respectively; and a combiner which combines delay signals DS1-DSN output from the delay elements D1-DN. The correlation among the noise components contained in the delay signals DS1-DSN obtained by delaying the nonlinear output signal is extremely small, and the correlation of the weak signal is large.
A signal reproduction apparatus which reproduces, from an input signal containing a weak signal which includes a piece of transmission information and noise superimposed thereon, the weak signal through use of a stochastic resonance phenomenon, the apparatus comprising:
A signal reproduction apparatus which reproduces, from an input signal containing a weak signal which includes a piece of transmission information and noise superimposed thereon, the weak signal through use of a stochastic resonance phenomenon, the apparatus comprising:
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