Approximator apparatus, and associated method, for approximating an N-dimensional euclidean norm
AssigneeNokia Corporation
InventorThomas J. Kenney
Life of this patent
Estimating the term…
Abstract
Approximator apparatus, and an associated method, for approximating a Euclidean norm. A transformer transforms component portions of a data symbol into transformed values. And, the transformed values are provided to an estimator. The estimator estimates the Euclidean norm responsive to the transformed values provided thereto. When a higher level Euclidean norm is to be approximated, transforming and estimations are iteratively performed to form successive two dimensional Euclidean norm approximations.
Claims20
In a digital communication device, an improvement of an approximator for forming an approximation of a Euclidean norm of a data symbol defined in terms of a first component portion and at least a second component portion, said approximator comprising:
- a detector adapted to receive indications of the first and at least second component portions of the data symbol;
- a transformer coupled to said detector, said transformer for transforming the first component portion into a first transformed value and for transducing the second component portion into a second transformed value, the first and second transformed values, respectively, formed by said transformer selected such that a geometric argument defined therefrom is within a selected angular range;
- and
- an estimator adapted to receive the first and second transformed values, respectively, said estimator for estimating the Euclidean norm of the data symbol, the Euclidean norm estimated to be a summation of a first product value formed from the first transformed value and a second product value formed from the second transformed value.
In a method of communicating by a digital communication device, an improvement of a method for forming an approximation of a Euclidean norm of a data symbol defined in terms of a first component portion and at least a second component portion, said method comprising:
- detecting indications of the first and at least second component portions of the data symbol;
- transforming the first component portion into a first transformed value and the second component portion into a second transformed value, the first and second transformed values, respectively, selected such that a geometric argument defined therefrom is within a selected angular rage;
- and
- estimating the Euclidean norm of the data symbol, the Euclidean norm estimated to be a summation of the first product value formed from the first transformed value and a second product value formed from the second transformed value.
Dependencies are inferred from the claim text.