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:
Nov. 15, 2016
Filed:
Dec. 22, 2015
Applicants:
Mahdi Zamani, Ottawa, CA;
Zhuhong Zhang, Ottawa, CA;
Chuandong LI, Ottawa, CA;
Inventors:
Assignee:
Huawei Technologies Co., Ltd., Guangdong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/02 (2006.01);
U.S. Cl.
CPC ...
H04L 25/024 (2013.01);
Abstract
The present disclosure provides a method and system for fine estimation of a local oscillator frequency offset of a received signal at a coherent receiver, by evaluating the probability mass function (PMF) of the signal phase of output symbols at different frequencies. At frequencies other than the actual frequency offset, the signal phase is uniformly distributed in [−π,π] such that the summation of a function of PMF values where the function is convex or concave between 0 and 1 can be utilized to determine an a frequency offset to be used by the coherent receiver.