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:
Jan. 29, 2013
Filed:
Feb. 29, 2008
Gavin D. Parnaby, Irvine, CA (US);
George A. Zimmerman, Rolling Hills Estates, CA (US);
Chris Pagnanelli, Huntington Beach, CA (US);
William W. Jones, Aliso Veijo, CA (US);
Gavin D. Parnaby, Irvine, CA (US);
George A. Zimmerman, Rolling Hills Estates, CA (US);
Chris Pagnanelli, Huntington Beach, CA (US);
William W. Jones, Aliso Veijo, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A cancellation system is disclosed for processing incoming and outgoing signals in a transform domain to create a cancellation signal for reducing or removing unwanted interference. Data is ordered based on Good-Thomas indexing into a two dimensional array in a buffer. The two dimensional array may have lrows and lcolumns. From the buffer, the columns of data undergo a Winograd small transform. The rows of data undergo a Cooley-Tukey operation to complete the transform operation into the frequency domain. Multipliers scale the transformed data to generate a cancellation signal in the frequency domain. Inverse (Cooley-Tukey) and Winograd transforms perform inverse processing on the cancellation signal to return the cancellation signal or data to the time domain. Re-ordering the data and combination of the cancellation signal or data with incoming or outgoing signals achieve interference cancellation.