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METHOD AND APPARATUS FOR APPROXIMATING AN UPPER-BOUND LIMIT FOR AN ABSOLUTE VALUE OF A COMPLEX NUMBER OR NORM OF A TWO-ELEMENT VECTOR

  • US 20090177723A1
  • Filed: 01/08/2008
  • Published: 07/09/2009
  • Est. Priority Date: 01/08/2008
  • Status: Active Grant
First Claim
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1. A method for approximating an upper-bound limit for the absolute value of a complex number or the norm of a two-element vector, comprising the steps of:

  • initializing the absolute values of a real part and an imaginary part of the complex number;

    generating the upper-bound limit using an upper-bound function according to an upper bound approximation means; and

    detecting whether an overflow condition exists.

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