Patents by Inventor Peroor K. Sebastian

Peroor K. Sebastian 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).

  • Patent number: 9847821
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. One example includes transmitting a first and a second data signal to a remote unit from a respective first and a second spatially separate antenna of a base station so that the first and second data signals have a first spatial configuration, determining that the first and the second data signals are not spatially separated by the remote unit, reconfiguring the (spatial multiplexing logic 104) spatial configuration of the first and second data signals to a second spatial configuration, and transmitting a third and fourth data signal to the remote unit from a second different antenna configuration according to the second spatial configuration.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: December 19, 2017
    Assignee: INTEL CORPORATION
    Inventors: Robert W. Heath, Jr., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Patent number: 9736832
    Abstract: A wireless communications system is presented that adapts its mode of operation between spatial and non-spatial multiplexing in response to transmission-specific variables. Mode determination logic determines, in response to a received signal, if spatial or non-spatial multiplexing should be used to transmit a subscriber datastream between the BTS and the UE. The mode determination logic receives a measure of a transmission characteristic of the signal, compares the transmission characteristic to a transmission characteristic threshold and selects either spatial or non-spatial multiplexing in response to the comparison. The transmission characteristic includes at least one of delay spread, post-processing signal-to-noise ratio, CRC failure, residual inter-symbol interference, mean square error, coherence time, and path loss.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: August 15, 2017
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Rajeev Krishnamoorthy, Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Publication number: 20160262134
    Abstract: A wireless communications adapts its mode of operation between spatial multiplexing and non-spatial multiplexing in response to transmission-specific variables. An embodiment of a wireless communications system for transmitting information between a base transceiver station and a subscriber unit includes mode determination logic. The mode determination logic is in communication with the base transceiver station and the subscriber unit. The mode determination logic determines, in response to a received signal, if a subscriber datastream should be transmitted between the base transceiver station and the subscriber unit utilizing spatial multiplexing or non-spatial multiplexing in an embodiment, the mode determination logic has an input for receiving a measure of a transmission characteristic related to the received signal.
    Type: Application
    Filed: March 10, 2016
    Publication date: September 8, 2016
    Inventors: Robert W. Heath, JR., Rajeev Krishnamoorthy, Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Publication number: 20160080057
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. One example includes transmitting a first and a second data signal to a remote unit from a respective first and a second spatially separate antenna of a base station so that the first and second data signals have a first spatial configuration, determining that the first and the second data signals are not spatially separated by the remote unit, reconfiguring the (spatial multiplexing logic 104) spatial configuration of the first and second data signals to a second spatial configuration, and transmitting a third and fourth data signal to the remote unit from a second different antenna configuration according to the second spatial configuration.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Applicant: INTEL CORPORATION
    Inventors: ROBERT W. HEATH, JR., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Patent number: 9288800
    Abstract: Embodiments of a base transceiver station and method for transmitting are described herein. In some embodiments, data is transmitted over a downlink channel in accordance with a selected one of a plurality of transmission modes. The base transceiver station may be configurable to transmit data in accordance with each of the transmission modes. One of the transmissions modes may be selected for the data transmission based at least in part on feedback reported by a subscriber unit. The transmission modes include at least a single antenna mode, a transmit diversity mode, and a spatial multiplexing mode.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: March 15, 2016
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Rajeev Krishnamoorthy, Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Patent number: 9210709
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: December 8, 2015
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Patent number: 9144074
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 22, 2015
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Patent number: 9137799
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 15, 2015
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Publication number: 20130286962
    Abstract: Embodiments of a base transceiver station and method for transmitting are described herein. In some embodiments, data is transmitted over a downlink channel in accordance with a selected one of a plurality of transmission modes. The base transceiver station may be configurable to transmit data in accordance with each of the transmission modes. One of the transmissions modes may be selected for the data transmission based at least in part on feedback reported by a subscriber unit. The transmission modes include at least a single antenna mode, a transmit diversity mode, and a spatial multiplexing mode.
    Type: Application
    Filed: April 8, 2013
    Publication date: October 31, 2013
    Inventors: Robert W. Heath, JR., Rajeev Krishnamoorthy, Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Publication number: 20130176966
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Application
    Filed: February 28, 2013
    Publication date: July 11, 2013
    Inventors: Robert W. Heath, JR., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Publication number: 20130176968
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Application
    Filed: February 28, 2013
    Publication date: July 11, 2013
    Inventors: Robert W. Heath, JR., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Publication number: 20130163526
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Application
    Filed: November 21, 2012
    Publication date: June 27, 2013
    Inventors: Robert W. Heath, JR., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Patent number: 8428037
    Abstract: A wireless communications adapts its mode of operation between spatial multiplexing and non-spatial multiplexing in response to transmission-specific variables. An embodiment of a wireless communications system for transmitting information between a base transceiver station and a subscriber unit includes mode determination logic. The mode determination logic is in communication with the base transceiver station and the subscriber unit. The mode determination logic determines, in response to a received signal, if a subscriber datastream should be transmitted between the base transceiver station and the subscriber unit utilizing spatial multiplexing or non-spatial multiplexing. In an embodiment, the mode determination logic has an input for receiving a measure of a transmission characteristic related to the received signal.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: April 23, 2013
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Rajeev Krishnamoorthy, Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Patent number: 8418033
    Abstract: A method and communication system for selecting a mode for encoding data for transmission in a wireless communication channel between a transmit unit and a receive unit. The data is initially transmitted in an initial mode and the selection of the subsequent mode is based on a selection of first-order and second-order statistical parameters of short-term and long-term quality parameters. Suitable short-term quality parameters include signal-to-interference and noise ratio (SINR), signal-to-noise ratio (SNR), power level and suitable long-term quality parameters include error rates such as bit error rate (BER) and packet error rate (PER). The method of the invention can be employed in Multiple Input Multiple Output (MIMO), Multiple Input Single Output (MISO), Single Input Single Output (SISO) and Single Input Multiple Output (SIMO) communication systems to make subsequent mode selection faster and more efficient.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 9, 2013
    Assignee: Intel Corporation
    Inventors: David J. Gesbert, Severine E. Catreux, Robert W. Heath, Jr., Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Patent number: 8345637
    Abstract: A wireless communications adapts its mode of operation between spatial multiplexing and non-spatial multiplexing in response to transmission-specific variables. An embodiment of a wireless communications system for transmitting information between a base transceiver station and a subscriber unit includes mode determination logic. The mode determination logic is in communication with the base transceiver station and the subscriber unit. The mode determination logic determines, in response to a received signal, if a subscriber data stream should be transmitted between the base transceiver station and the subscriber unit utilizing spatial multiplexing or non-spatial multiplexing.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: January 1, 2013
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Rajeev Krishnamoorthy, Arogyaswami J. Paulraj, Peroor K. Sebastian
  • Patent number: 8339934
    Abstract: The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: December 25, 2012
    Assignee: Intel Corporation
    Inventors: Robert W. Heath, Jr., Peroor K. Sebastian, Rahul Chopra, Arogyaswami J. Paulraj
  • Publication number: 20110179336
    Abstract: A method and communication system for selecting a mode for encoding data for transmission in a wireless communication channel between a transmit unit and a receive unit. The data is initially transmitted in an initial mode and the selection of the subsequent mode is based on a selection of first-order and second-order statistical parameters of short-term and long-term quality parameters. Suitable short-term quality parameters include signal-to-interference and noise ratio (SINR), signal-to-noise ratio (SNR), power level and suitable long-term quality parameters include error rates such as bit error rate (BER) and packet error rate (PER). The method of the invention can be employed in Multiple Input Multiple Output (MIMO), Multiple Input Single Output (MISO), Single Input Single Output (SISO) and Single Input Multiple Output (SIMO) communication systems to make subsequent mode selection faster and more efficient.
    Type: Application
    Filed: March 31, 2011
    Publication date: July 21, 2011
    Inventors: David J. Gesbert, Severine E. Catreux, Robert W. Heath, JR., Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Patent number: 7921349
    Abstract: A method and communication system for selecting a mode for encoding data for transmission in a wireless communication channel between a transmit unit and a receive unit. The data is initially transmitted in an initial mode and the selection of the subsequent mode is based on a selection of first-order and second-order statistical parameters of short-term and long-term quality parameters. Suitable short-term quality parameters include signal-to-interference and noise ratio (SINR), signal-to-noise ratio (SNR), power level and suitable long-term quality parameters include error rates such as bit error rate (BER) and packet error rate (PER). The method of the invention can be employed in Multiple Input. Multiple Output (MIMO), Multiple Input Single Output (MISO), Single Input Single Output (SISO) and Single Input Multiple Output (SIMO) communication systems to make subsequent mode selection faster and more efficient.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: April 5, 2011
    Assignee: Intel Corporation
    Inventors: David J. Gesbert, Severine E. Catreux, Robert W. Heath, Jr., Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Publication number: 20100318861
    Abstract: A method and communication system for selecting a mode for encoding data for transmission in a wireless communication channel between a transmit unit and a receive unit. The data is initially transmitted in an initial mode and the selection of the subsequent mode is based on a selection of first-order and second-order statistical parameters of short-term and long-term quality parameters. Suitable short-term quality parameters include signal-to-interference and noise ratio (SINR), signal-to-noise ratio (SNR), power level and suitable long-term quality parameters include error rates such as bit error rate (BER) and packet error rate (PER). The method of the invention can be employed in Multiple Input Multiple Output (MIMO), Multiple Input Single Output (MISO), Single Input Single Output (SISO) and Single Input Multiple Output (SIMO) communication systems to make subsequent mode selection faster and more efficient.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 16, 2010
    Inventors: David J. Gesbert, Severine E. Catreux, Robert W. Heath, JR., Peroor K. Sebastian, Arogyaswami J. Paulraj
  • Patent number: RE44959
    Abstract: A method of maximizing a communication parameter, such as data capacity, signal quality or throughput of a channel between a transmit unit with M transmit antennas and a receive unit with N receive antennas and a communication system such as a wireless network (including networks with multiple access techniques such as TDMA, FDMA, CDMA, OFDMA) employing the method. The data is first processed to produce parallel spatial-multiplexed streams SMi, where i=1 . . . k, which are converted or mapped to transmit signals TSp, where p=1 . . . M, assigned for transmission from the M transmit antennas. Corresponding receive signals RSj, where j=1 . . . N, are received by the N receive antennas of the receiver and used to assess a quality parameter, such as a statistical signal parameter including SINR, SNR, power level, level crossing rate, level crossing duration of the signal of a predetermined threshold and reception threshold, or a parameter of the data, such as BER or packet error rate.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: June 24, 2014
    Assignee: Intel Corporation
    Inventors: Arogyaswami J. Paulraj, Peroor K. Sebastian, David J. Gesbert, Jose Tellado