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. 22, 2013
Filed:
May. 26, 2011
Wieslaw Jerzy Szajnowski, Guildford, GB;
Wieslaw Jerzy Szajnowski, Guildford, GB;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An interference classifier is disclosed for determining the type of interference present in a signal. The interference classifiercomprises a bufferoperable to receive and store data comprising samples of a signal; a scale factor calculatoroperable to use the signal samples to calculate a scale factor in dependence upon the levels of the signal samples; a normaliseroperable to calculate normalised signal samples by using the scale factor to normalise the signal samples; a nonlinear transformeroperable to perform a nonlinear transform on the normalised signal samples to calculate transformed signal samples; an averaging circuitoperable to calculate an average of the transformed signal samples; and a comparatoroperable to compare the calculated average of the transformed signal samples to a predetermined threshold level in order to determine the type of interference present in the received signal. The interference classifierdisclosed herein performs an advantageous type of nonlinear transform that provides an improvement in detection probability over known kurtosis-based interference classifiers. Applications of the interference classifierinclude automotive radar systems, radio astronomy, microwave radiometry, weather forecasting and cognitive radio networks.