Patents by Inventor Melissa Duarte

Melissa Duarte has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240014864
    Abstract: A radio channel may comprise a first component between two devices, and second and third components via the controllable scatterer. First reference signal(s) may be transmitted with the controllable scatterer configured to alter a propagation of signals such that influence of the second and third components of the radio channel is mitigated. Second reference signal(s) may be transmitted with the controllable scatterer configured to alter a propagation of signals such that influence of the second and third components of the radio channel is increased. An estimate of the first component may be determined based on the first reference signal(s) and an estimate of the third component may be determined based on the second reference signal(s) and a pre-computed estimate of the second component.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 11, 2024
    Inventors: Melissa DUARTE GELVEZ, Mustapha AMARA, Mohamed KAMOUN, Maxime Guillaud, Paul FERRAND
  • Patent number: 10924256
    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.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: February 16, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Rittwik Jana, Vaneet Aggarwal, Christopher Rice, Nemmara K. Shankaranarayanan, Melissa Duarte, Ashutosh Sabharwal
  • Patent number: 10715303
    Abstract: The invention relates to an apparatus (301) for managing full-duplex communication between a base station (BS0) and a set of user equipments (101a,b), the base station (BS0) comprising a plurality of transmitter antennas, the plurality of transmitter antennas being associated with a downlink communication channel H between the base station (BS0) and the set of user equipments (101a,b) and a plurality of interference channels Gi between the base station (BS0) and a plurality of neighboring base stations (BSi).
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 14, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Luis Garcia Ordonez, Melissa Duarte Gelvez, Merouane Debbah, Maxime Guillaud
  • Patent number: 10680705
    Abstract: The disclosure relates to a network entity for selecting a communication relay from a plurality of communication relays within the service area of a base station covering a plurality of geographic positions, wherein each communication relay is able to retransmit a communication between the base station and a user equipment, wherein the network entity comprises a divider configured to divide the service area into a plurality of different regions based on an attenuation measure at each geographic position, a determiner configured to determine for each pair of regions a spatial isolation measure based on the attenuation measures at the geographic positions within the regions, and a selector configured to select a communication relay based on the spatial isolation measures associated with the geographic position of each communication relay.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: June 9, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Afef Feki, Melissa Duarte Gelvez, Stefan Valentin, Luca Rose
  • Publication number: 20180359076
    Abstract: The invention relates to an apparatus (301) for managing full-duplex communication between a base station (BS0) and a set of user equipments (101a,b), the base station (BS0) comprising a plurality of transmitter antennas, the plurality of transmitter antennas being associated with a downlink communication channel H between the base station (BS0) and the set of user equipments (101a,b) and a plurality of interference channels Gi between the base station (BS0) and a plurality of neighboring base stations (BSi).
    Type: Application
    Filed: July 25, 2018
    Publication date: December 13, 2018
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Luis Garcia Ordonez, Melissa Duarte Gelvez, Merouane Debbah, Maxime Guillaud
  • Publication number: 20180278325
    Abstract: The disclosure relates to a network entity for selecting a communication relay from a plurality of communication relays within the service area of a base station covering a plurality of geographic positions, wherein each communication relay is able to retransmit a communication between the base station and a user equipment, wherein the network entity comprises a divider configured to divide the service area into a plurality of different regions based on an attenuation measure at each geographic position, a determiner configured to determine for each pair of regions a spatial isolation measure based on the attenuation measures at the geographic positions within the regions, and a selector configured to select a communication relay based on the spatial isolation measures associated with the geographic position of each communication relay.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 27, 2018
    Inventors: Afef FEKI, Melissa Duarte GELVEZ, Stefan VALENTIN, Luca ROSE
  • Publication number: 20180076948
    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.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Inventors: Rittwick JANA, Vaneet AGGARWAL, Christopher RICE, Nemmara K. Shankaranarayanan, Melissa DUARTE, Ashutosh SABHARWAL
  • Patent number: 9825753
    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.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: November 21, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rittwik Jana, Vaneet Aggarwal, Christopher W. Rice, Nemmara K. Shankaranarayanan, Melissa Duarte, Ashutosh Sabharwal
  • Publication number: 20160036582
    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.
    Type: Application
    Filed: October 13, 2015
    Publication date: February 4, 2016
    Inventors: Rittwik JANA, Vaneet AGGARWAL, Christopher W. RICE, Nemmara K. Shankaranarayanan, Melissa DUARTE, Ashutosh SABHARWAL
  • Patent number: 9166766
    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.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: October 20, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rittwik Jana, Vaneet Aggarwal, Christopher W. Rice, Nemmara K. Shankaranarayanan, Melissa Duarte, Ashutosh Sabharwal
  • Publication number: 20150009868
    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.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 8, 2015
    Inventors: Rittwik JANA, Vaneet AGGARWAL, Christopher W. RICE, Nemmara K. Shankaranarayanan, Melissa DUARTE, Ashutosh SABHARWAL
  • Patent number: 8842584
    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.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: September 23, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rittwik Jana, Vaneet Aggarwal, Christopher W. Rice, Nemmara K. Shankaranarayanan, Melissa Duarte, Ashutosh Sabharwal
  • Publication number: 20140016515
    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.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Rittwik JANA, Vaneet AGGARWAL, Christopher W. RICE, Nemmara K. SHANKARANARAYANAN, Melissa DUARTE, Ashutosh SABHARWAL
  • Patent number: 8331471
    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.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: December 11, 2012
    Assignee: Xilinx, Inc.
    Inventors: Melissa Duarte, Ashutosh Sabharwal, Christopher H. Dick, Raghavendar M. Rao