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:
Sep. 26, 2017
Filed:
Feb. 25, 2014
Applicant:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Inventors:
Lianfu Liu, Shenzhen, CN;
Jun Ma, Chengdu, CN;
Assignee:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 5/14 (2006.01); H04J 3/06 (2006.01); H04L 27/00 (2006.01); H04B 7/26 (2006.01); H04L 27/227 (2006.01);
U.S. Cl.
CPC ...
H04J 3/06 (2013.01); H04B 7/2643 (2013.01); H04L 27/0014 (2013.01); H04L 27/2273 (2013.01); H04L 2027/0024 (2013.01); H04L 2027/0048 (2013.01);
Abstract
Embodiments of the present invention provide a carrier synchronization method, circuit, and system. The method includes performing n times frequency multiplication on a received signal; performing narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and performing n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal. The variable n is a positive integer greater than or equal to 4.