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. 11, 2025
Filed:
Jan. 27, 2023
Hong Kong Applied Science and Technology Research Institute Co., Ltd., Shatin, HK;
Abstract
Described is a method of performing carrier frequency offset (CFO) estimation of physical channels in a mobile communications system. The method comprises the step of performing channel estimation of a received signal on a physical channel based on multiple orthogonal frequency division multiplex (OFDM) symbols in one or more reference signals (RSs). The method includes determining multiple phase rotation values Φ and corresponding time differences s between different OFDM symbols in the one or more RSs over a base phase rotation range comprising +/−π to obtain a first CFO estimation candidate ƒ. The base phase rotation range is extended to provide an extended phase rotation range of greater than +/−π to obtain additional CFO estimation candidates ƒ, ƒ. . . ƒwithin the extended phase rotation range.