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:
Aug. 06, 1996
Filed:
Jun. 11, 1991
James W Bond, San Diego, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An interference suppression system utilizes a non-adaptive filter to suppress interference from bandspread communication signals. The filter is effective in the cancellation of interference from a bandspread communication signal when the interference dominates the communication signal and Gaussian noise. This invention requires a processor without highly specialized hardware components. The components are cheaper and easier to produce because the required processor needs to perform fewer calculations by several orders of magnitude than previously existing processors providing roughly equivalent interference suppression. By forming phase-differences, the filter is used to estimate whether the signed magnitude of a component of a communication signal phase difference is either 90.degree. or 270.degree. out-of-phase with interference. By estimating this component, high quality reception of spread spectrum radio communication signals in an interference environment is possible.