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Non-Linear Modeling of a Physical System Using Look-Up Table with Polynomial Interpolation

  • US 20140314181A1
  • Filed: 03/31/2014
  • Published: 10/23/2014
  • Est. Priority Date: 04/17/2013
  • Status: Active Grant
First Claim
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1. A method for evaluating a non-linear function for a complex input value, comprising:

  • obtaining at least one look-up table with polynomial interpolation that represents said non-linear function, wherein entries in said look-up table comprise polynomial coefficients of at least degree two for different segments of said non-linear function;

    obtaining a point from said look-up table that is near a magnitude of said complex input value; and

    generating a complex output value by evaluating said polynomial coefficients at said point to perform a Taylor Series expansion from said point.

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