Patents by Inventor Rajendra Tushar Moorti

Rajendra Tushar Moorti 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: 20190312609
    Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; a predictor that modifies output of the channel estimator to compensate for a first time delay incurred in tuning the system for digital self-interference cancellation; and a channel memory that stores the past self-interference channel estimates.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Inventors: Rajendra Tushar Moorti, Kumar Viswanatha
  • Patent number: 10382089
    Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; and a channel memory that stores the past self-interference channel estimates.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: August 13, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Rajendra Tushar Moorti, Kumar Viswanatha
  • Publication number: 20190123940
    Abstract: A method for adaptively-tuned digital self-interference cancellation includes generating a digital self-interference cancellation signal from a digital transmit signal based on a transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal; and updating the transform configuration based on the composite residue signal.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventors: Rajendra Tushar Moorti, Jung-Il Choi, Mayank Jain
  • Patent number: 10200217
    Abstract: A method for adaptively-tuned digital self-interference cancellation includes generating a digital self-interference cancellation signal from a digital transmit signal based on a transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal; and updating the transform configuration based on the composite residue signal.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: February 5, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Rajendra Tushar Moorti, Jung-Il Choi, Mayank Jain
  • Publication number: 20190007089
    Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; and a channel memory that stores the past self-interference channel estimates.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 3, 2019
    Inventors: Rajendra Tushar Moorti, Kumar Viswanatha
  • Patent number: 10103774
    Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; and a channel memory that stores the past self-interference channel estimates.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: October 16, 2018
    Assignee: Kumu Networks, Inc.
    Inventors: Rajendra Tushar Moorti, Kumar Viswanatha
  • Publication number: 20180278290
    Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; and a channel memory that stores the past self-interference channel estimates.
    Type: Application
    Filed: March 27, 2018
    Publication date: September 27, 2018
    Inventors: Rajendra Tushar Moorti, Kumar Viswanatha
  • Publication number: 20170310508
    Abstract: A method for adaptively-tuned digital self-interference cancellation includes generating a digital self-interference cancellation signal from a digital transmit signal based on a transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; generating a composite residue signal from the digital residue signal and the digital transmit signal; and updating the transform configuration based on the composite residue signal.
    Type: Application
    Filed: July 12, 2017
    Publication date: October 26, 2017
    Inventors: Rajendra Tushar Moorti, Jung-Il Choi, Mayank Jain
  • Patent number: 9742593
    Abstract: A method for adaptively-tuned digital self-interference cancellation comprises receiving a digital transmit signal; receiving a transform configuration; generating a set of signal components from the digital transmit signal; transforming the set of signal components into a digital self-interference cancellation signal according to the transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; detecting a trigger; in response to detecting the trigger: computing a ratio of the digital residue signal to the digital transmit signal; converting the ratio to the frequency-domain to form a frequency-domain-converted ratio; computing a frequency-domain self-interference channel between the transmitter and the receiver based on the frequency-domain-converted ratio; computing an inverse discrete Fourier transform matrix based on a portion of the discrete Fourier transform matrix; converting the frequency-domain self-interference channel t
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: August 22, 2017
    Assignee: Kumu Networks, Inc.
    Inventors: Rajendra Tushar Moorti, Jung-Il Choi, Mayank Jain
  • Publication number: 20170180160
    Abstract: A method for adaptively-tuned digital self-interference cancellation comprises receiving a digital transmit signal; receiving a transform configuration; generating a set of signal components from the digital transmit signal; transforming the set of signal components into a digital self-interference cancellation signal according to the transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; detecting a trigger; in response to detecting the trigger: computing a ratio of the digital residue signal to the digital transmit signal; converting the ratio to the frequency-domain to form a frequency-domain-converted ratio; computing a frequency-domain self-interference channel between the transmitter and the receiver based on the frequency-domain-converted ratio; computing an inverse discrete Fourier transform matrix based on a portion of the discrete Fourier transform matrix; converting the frequency-domain self-interference channel t
    Type: Application
    Filed: November 28, 2016
    Publication date: June 22, 2017
    Applicant: Kumu Networks, Inc.
    Inventors: Rajendra Tushar Moorti, Jung-Il Choi, Mayank Jain
  • Patent number: 9344535
    Abstract: A method for multiple protocol wireless communications begins by determining protocols of wireless communication devices within a proximal region. The method then continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by, when the protocols of the wireless communication devices within the proximal region are not of a like protocol, selecting a protocol of the protocols of the wireless communication devices within the proximal region based on a protocol ordering to produce a selected protocol. The method continues by utilizing the selected protocol by the wireless communication devices within the proximal region to set up a wireless communication within the proximal region.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: May 17, 2016
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason A. Trachewsky, Rajendra Tushar Moorti, Matthew James Fischer
  • Patent number: 9276682
    Abstract: A system for multi-rate digital self-interference cancellation including a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal; a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal, according to a transform configuration, to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: March 1, 2016
    Assignee: KUMU Networks, Inc.
    Inventors: Dinesh Bharadia, Jung-Il Choi, Mayank Jain, Rajendra Tushar Moorti
  • Patent number: 9247439
    Abstract: A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: January 26, 2016
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Christopher J. Hansen, Jason A. Trachewsky
  • Patent number: 9204337
    Abstract: Bandwidth mechanisms and successive channel reservation access within multiple user, multiple access, and/or MIMO wireless communications. A management frame, communicated from one wireless communication devices to one or more others, includes successive channel reservation assignment therein, and also indicates channel(s) within cluster(s) for use in respective communications (e.g., transmissions/receptions) of those wireless communication device(s) that receive the management frame. Subsequent management frames can modify or update such a channel assignment. Channel reservation for use in communications by respective wireless communication devices may be grown when additional channels may become available. Based on later determined information regarding the channel availability status, such channels that may become available can be used for subsequent, wider bandwidth communications.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: December 1, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Matthew James Fischer, Peiman Amini, Vinko Erceg, Rajendra Tushar Moorti
  • Publication number: 20150341125
    Abstract: A system for multi-rate digital self-interference cancellation including a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal; a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal, according to a transform configuration, to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.
    Type: Application
    Filed: May 26, 2015
    Publication date: November 26, 2015
    Inventors: Dinesh Bharadia, Jung-Il Choi, Mayank Jain, Rajendra Tushar Moorti
  • Patent number: 8971304
    Abstract: Providing wireless transmission, where in a first transmission mode, transmitting a plurality of frames using a first interframe spacing interval. When in a second transmission mode, transmitting the plurality of frames using a second interframe spacing interval, wherein the second interframe spacing is less than the first interframe spacing.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: March 3, 2015
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Matthew James Fischer, George Kondylis
  • Patent number: 8929317
    Abstract: A method for generating a preamble of a frame for a wide-bandwidth channel wireless communication begins by generating a legacy carrier detect field. The method continues by generating a channel sounding field, wherein the channel sounding field includes a plurality of tones within the wide-bandwidth channel, wherein a first set of the plurality of tones corresponds to tones of a legacy channel sounding field. The method continues by generating a legacy signal field, wherein, in time, the legacy signal field follows the channel sounding field, which follows the legacy carrier detect field.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: January 6, 2015
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason A. Trachewsky, Rajendra Tushar Moorti
  • Patent number: 8891642
    Abstract: A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason A. Trachewsky, Rajendra Tushar Moorti, Christopher Young
  • Patent number: 8670718
    Abstract: A signal quality metric is determined for each of multiple signal paths. Each of the signal paths corresponds to a respective antenna. The determined signal quality metric is modified for one or more signal paths. A subset of the signal paths is selected for receiving a signal based at least in part on the determined signal quality metrics. The selecting is biased based at least in part on the modified signal quality metrics.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 11, 2014
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Min Chuin Hoo, Jason Alexander Trachewsky
  • Patent number: 8630161
    Abstract: A method for processing a wireless signal includes performing by one or more processors, selecting a plurality of training sequences from a preamble of the wireless signal. Each of the selected plurality of training sequences may include a plurality of energy tones. The selected plurality of training sequences from the preamble may be shifted, in time domain, to generate a plurality of subsequent preambles for transmission. Each of the generated plurality of subsequent preambles may include the plurality of energy tones. The preamble may include a legacy preamble and/or an 802.11(n) preamble. The shifting in the time domain may include circular shifting. The circular shifting may include forward circular shifting and/or backwards circular shifting.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: January 14, 2014
    Assignee: Broadcom Corporation
    Inventors: Rajendra Tushar Moorti, Christopher Young, Carlos Aldana