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:
Oct. 20, 2020
Filed:
Feb. 28, 2018
Imagination Technologies Limited, Kings Langley, GB;
Filipe Wiener Carvalho, Monmouthshire, GB;
Imagination Technologies Limited, Kings Langley, GB;
Abstract
The presence of an OFDM signal in a received input signal is detected by calculating, for each block of a plurality of blocks of samples of the received input signal, an auto-correlation value at each of a plurality of lags-of-interest; determining, for each of the plurality of lags-of-interest, a rate of growth value across a group of two or more blocks of data samples based on the auto-correlation values; normalising the determined rate of growth values using a normalisation factor to generate normalised rate of growth values; and determining whether an OFDM signal is present in the received input signal based on the normalised rate of growth values.