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. 21, 2017
Filed:
Oct. 13, 2015
At&t Intellectual Property I, L.p., Atlanta, GA (US);
Rittwik Jana, Parsippany, NJ (US);
Vaneet Aggarwal, Parsippany, NJ (US);
Christopher W. Rice, Parsippany, NJ (US);
Nemmara K. Shankaranarayanan, Bridgewater, NJ (US);
Melissa Duarte, Houston, TX (US);
Ashutosh Sabharwal, Houston, TX (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
Disclosed herein are systems, methods, and computer-readable storage media for enabling improved cancellation of self-interference in full-duplex communications, or the transmitting and receiving of communications in a single frequency band without requiring time, frequency, or code divisions. The system estimates the signal strength and phase of a self-interference signal, generates a cancellation signal based on this estimate, then uses the cancellation signal to suppress the self-interference before sampling received analog signal. After applying the cancellation signal, the system samples and digitizes the remaining analog signal. The digitized signal is then subjected to additional digital cancellation, allowing for extraction of the desired signal.