Patents by Inventor Badri Varadarajan

Badri Varadarajan 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: 20200077413
    Abstract: A radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Applicant: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Kevin J. NEGUS, Sagnik GHOSH, Badri VARADARAJAN
  • Publication number: 20190393935
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 26, 2019
    Applicant: Texas Instruments Incorporated
    Inventors: Eko N. ONGGOSANUSI, Badri VARADARAJAN, Anand Ganesh DABAK
  • Patent number: 10506611
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: December 10, 2019
    Assignee: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Kevin J. Negus, Sagnik Ghosh, Badri Varadarajan
  • Publication number: 20190342844
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Application
    Filed: July 1, 2019
    Publication date: November 7, 2019
    Inventors: ANAND GANESH DABAK, EKO NUGROHO ONGGOSANUSI, BADRI VARADARAJAN
  • Patent number: 10341969
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: July 2, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anand Ganesh Dabak, Eko Nugroho Onggosanusi, Badri Varadarajan
  • Publication number: 20190020452
    Abstract: A transmitter includes a bandwidth configuration unit configured to provide an increased system bandwidth corresponding to a bandwidth extension over multiple component carriers Additionally, the transmitter also includes a transmit unit configured to employ the bandwidth extension.
    Type: Application
    Filed: August 26, 2014
    Publication date: January 17, 2019
    Inventors: Eko N. ONGGOSANUSI, Anand G. DABAK, Badri VARADARAJAN, Runhua CHEN, Tarik MUHAREMOVIC
  • Publication number: 20190007950
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Application
    Filed: August 14, 2018
    Publication date: January 3, 2019
    Applicant: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Kevin J. NEGUS, Sagnik GHOSH, Badri VARADARAJAN
  • Publication number: 20180351613
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 6, 2018
    Applicant: Texas Instruments Incorporated
    Inventors: Eko N. ONGGOSANUSI, Badri VARADARAJAN, Anand Ganesh DABAK
  • Patent number: 10051643
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: August 14, 2018
    Assignee: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Kevin J. Negus, Sagnik Ghosh, Badri Varadarajan
  • Patent number: 10044532
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: August 7, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko N. Onggosanusi, Badri Varadarajan, Anand G. Dabak
  • Publication number: 20180092099
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use adaptive beamforming and sample alignment at the transmitter to enhance the link performance. Such backhaul radios may communicate with each other to compute and apply optimal beamforming parameters for a particular propagation environment through a closed-loop feedback mechanism.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 29, 2018
    Applicant: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Arthur ISHIGURO, Adnan RAJA, Badri VARADARAJAN, Kevin J. NEGUS
  • Publication number: 20180084553
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use an advanced ARQ protocol, which uses an ACK_MAP, constructed by a combination of implicit and explicit signaling, and performs a combination of proactive and reactive retransmissions.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Applicant: SKYLINE PARTNERS TECHNOLOGY LLC
    Inventors: Colby BOYER, Badri VARADARAJAN, Kevin J. NEGUS
  • Publication number: 20170353934
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Application
    Filed: August 8, 2017
    Publication date: December 7, 2017
    Inventors: ANAND GANESH DABAK, EKO NUGROHO ONGGOSANUSI, BADRI VARADARAJAN
  • Patent number: 9787362
    Abstract: A transmitter path of a power line communication (PLC) device is described. In an embodiment, the transmitter path may include an amplifier, a capacitor coupled to the amplifier, a shared transformer coupled to the capacitor, and a plurality of line interface coupling circuits coupled to the shared transformer, where each of the line interface coupling circuits is configured to be connected to a different phase of an electrical power circuit.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: October 10, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Badri Varadarajan, Edward Mullins
  • Publication number: 20170251484
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Applicant: CBF Networks, Inc.
    Inventors: Kevin J. NEGUS, Sagnik GHOSH, Badri VARADARAJAN
  • Patent number: 9730171
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: August 8, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anand Ganesh Dabak, Eko Nugroho Onggosanusi, Badri Varadarajan
  • Patent number: 9655133
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: May 16, 2017
    Assignee: CBF Networks, Inc.
    Inventors: Kevin J. Negus, Sagnik Ghosh, Badri Varadarajan
  • Patent number: 9641443
    Abstract: A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 2, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko N. Onggosanusi, Anand G. Dabak, Timothy M. Schmidl, Badri Varadarajan
  • Publication number: 20170026978
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Application
    Filed: October 4, 2016
    Publication date: January 26, 2017
    Inventors: Kevin J. Negus, Sagnik Ghosh, Badri Varadarajan
  • Patent number: 9474080
    Abstract: A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 18, 2016
    Assignee: CBF Networks, Inc.
    Inventors: Kevin J. Negus, Sagnik Ghosh, Badri Varadarajan