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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.:

US 10263569 B1

PDFFull Text
Date of Patent:
Apr. 16, 2019

Filed:

Dec. 01, 2015

Method and system for aligning signals widely spaced in frequency for wideband digital predistortion in wireless communication systems

Applicant:

Dali Systems Co. Ltd., George Town, Grand Cayman, KY;

Inventor:

Wan Jong Kim, Port Moody, CA;

Assignee:

Dali Systems Co. Ltd., Grand Cayman, KY;

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Khanh V Nguyen

Assistant Examiner:

Khiem D Nguyen

Int. Cl.
CPC ...
H03F 1/26 (2006.01); H03F 1/32 (2006.01); H04L 25/03 (2006.01); H04L 27/00 (2006.01); H03F 3/189 (2006.01); H03F 3/24 (2006.01); H04L 12/26 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H03F 1/3247 (2013.01); H03F 1/3258 (2013.01); H03F 3/189 (2013.01); H03F 3/24 (2013.01); H03F 3/245 (2013.01); H04L 25/03063 (2013.01); H04L 27/0002 (2013.01); H04L 43/028 (2013.01); H03F 2200/336 (2013.01); H03F 2200/451 (2013.01); H04L 25/03343 (2013.01); H04L 27/2627 (2013.01); H04L 27/2655 (2013.01);
Abstract

A system for time aligning widely frequency spaced signals includes a digital predistortion (DPD) processor and a power amplifier coupled to the DPD processor and operable to provide a transmit signal at a power amplifier output. The system also includes a feedback loop coupled to the power amplifier output. The feedback loop comprises an adaptive fractional delay filter, a delay estimator coupled to the adaptive fractional delay filter, and a DPD coefficient estimator coupled to the delay estimator.

Find Patent Forward Citations

Quick Actions:

Kim, Wan. (2019). Method and system for aligning signals widely spaced in frequency for wideband digital predistortion in wireless communication systems (U.S. Patent No. 10263569). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10263569

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