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SIGNAL DEMODULATION

  • US 20120245441A1
  • Filed: 06/04/2012
  • Published: 09/27/2012
  • Est. Priority Date: 12/13/2007
  • Status: Abandoned Application
First Claim
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1. A system, comprising:

  • a filter configured to receive a signal from a physiological sensor, wherein the signal comprises a first signal component and a second signal component comprising an interference component, and wherein the filter is configured to output a filtered signal;

    an analog-to-digital converter configured to receive the filtered signal and sample the filtered signal in periodic intervals to generate a sampled filtered signal, wherein each periodic interval comprises n samples; and

    a processor configured to;

    receive the sampled filtered signal;

    solve a matrix equation representing the sampled filtered signal for the first signal component, wherein the matrix equation comprises a signal vector comprising the first and second components and a matrix comprising weighted coefficients; and

    determine a physiological parameter based on the first signal component and not the second signal component.

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