The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2006
Filed:
Nov. 01, 2001
Methods and apparatus for efficient complex long multiplication and covariance matrix implementation
Gerald G. Pechanek, Cary, NC (US);
Ricardo Rodriguez, Raleigh, NC (US);
Matthew Plonski, Morrisville, NC (US);
David Strube, Raleigh, NC (US);
Kevin Coopman, Redwood City, CA (US);
Gerald G. Pechanek, Cary, NC (US);
Ricardo Rodriguez, Raleigh, NC (US);
Matthew Plonski, Morrisville, NC (US);
David Strube, Raleigh, NC (US);
Kevin Coopman, Redwood City, CA (US);
PTS Corporation, San Jose, CA (US);
Abstract
A digital signal processor for computing various types of complex multiplication is described. The digital signal processor operates in conjunction with registers, a multiplier, an adder, and a multiplexer The Registers store first and second complex operands. The multiplier simultaneously performs multiplications to produce each combination of products between the real and imaginary terms of the first and second complex operands. The multiplexer selects which produced products are added to or subtracted from each other based on the type of complex multiplication being performed. The adder simultaneously performs additions and subtractions, if necessary, to produce both real and imaginary results depending on whether the type of complex multiplication being performed is a conjugated operation. The registers store the results of the complex multiplication.