Patent · US Expired

Givens rotations computation

US7099911B2 · kind B2 · utility

1Cited by

3References

38Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Michael Schmidt · Dresden, DE
Ruediger Menken · Radeberg, DE

Key dates

Filing date	Sep 27, 2002
Grant date	Aug 29, 2006
Priority date	—
Expiry date	Oct 5, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG06F17/147
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A Givens rotation computation technique is provided that makes use of polynomial approximations of an expression that contains a square root function. The polynomial approximation uses polynomial coefficients that are specifically adapted to respective ones of a number of subintervals within the range of possible values of the input variable of the expression. The technique may be used in data communications devices such as those in wireless local area networks. An example is the application of the Givens rotations technique in a decision feedback equalizer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.