Melissa J Duarte

US Patent:

20140016515, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549189

Inventors:

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

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04B 15/00
H04L 5/14

US Classification:

370278

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.

US Patent:

20160036582, Feb 4, 2016

Filed:

Oct 13, 2015

Appl. No.:

14/881613

Inventors:

- Atlanta GA, 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

International Classification:

H04L 5/14
H04B 15/00
H04L 27/26

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.

US Patent:

20150009868, Jan 8, 2015

Filed:

Sep 22, 2014

Appl. No.:

14/492588

Inventors:

- Atlanta GA, 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

International Classification:

H04L 5/14

US Classification:

370278

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.