Melissa R 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:

8331471, Dec 11, 2012

Filed:

Jul 5, 2007

Appl. No.:

11/825373

Inventors:

Melissa Duarte - Houston TX, US
Ashutosh Sabharwal - Houston TX, US
Christopher H. Dick - San Jose CA, US
Raghavendar M. Rao - Austin TX, US

Assignee:

Xilinx, Inc. - San Jose CA

International Classification:

H04B 7/02
H04L 1/02

US Classification:

375267

Abstract:

Low bit-rate feedback wireless communication systems with reduced computational complexity is described. A first set of information is obtained and mapped to a set of regions. Each region of the set of regions has at least one portion with a zero value. The at least one portion is selected from a group consisting of an imaginary portion and a real portion. A second set of information is provided responsive to the mapping and stored for access by at least one component of the wireless communication system.

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.