Patents by Inventor Atul Salvekar

Atul Salvekar 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: 20200083747
    Abstract: An inductive power transmitter and an inductive power receiver include communication circuitry to communicate using modulation of the power transfer field. The inductive power transmitter or the inductive power receiver includes monitoring circuitry to determine a communication fault condition. If a communication fault condition is determined, a converter of the inductive power transmitter or inductive power receiver can adjust a control parameter.
    Type: Application
    Filed: December 7, 2018
    Publication date: March 12, 2020
    Inventors: Rex Pius Huang, Michael Scott Eckert, Mikhal De Jesus, Arunim Kumar, Atul Salvekar
  • Publication number: 20190393734
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data packets to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data packets. The data receiver may be configured to demodulate the received data packets. The data packets may include at least preamble bits, start bits, and data bits encoded as biphase half-bit signals in accordance with a predefined wireless power transfer protocol. During demodulation, the receiver may perform preamble detection, start bit detection, and data bit detection by comparing the input signals to corresponding reference patterns using a maximum likelihood sequence detection scheme. Phase recovery may be employed throughout to help provide immunity to phase change.
    Type: Application
    Filed: November 21, 2018
    Publication date: December 26, 2019
    Inventors: Bo Zhou, Atul A. Salvekar, Andrew H. Jones, Brian D. Mariner, Michael F. Jean, Moshe H. Malkin, Benjamin M. Oztalay, Arash Mehrabi, Jose Santos Martinez
  • Publication number: 20190238000
    Abstract: A wireless power receiving device has a receive coil that receives wireless power signals from a wireless power transmitting device and has a rectifier that produces direct-current power from the received wireless power signals. The receive coil of the wireless power receiving device is coupled to wireless transceiver circuitry. Similarly the transmit coil of the wireless power transmitting device is coupled to wireless transceiver circuitry. The wireless transceiver circuitry in the wireless power receiving device or transmitting may be configured to generate and/or modulate one or more data carrier waves using any desired modulation scheme. The one or more modulated data carrier waves are transmitted between the transmit coil and the receive coil of the corresponding wireless power transmitting and receiving devices. The one or more data carrier waves may have a frequency that is different than the power transmission frequency.
    Type: Application
    Filed: November 19, 2018
    Publication date: August 1, 2019
    Inventors: Atul A. Salvekar, Jeffrey D. Louis
  • Patent number: 8989320
    Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for simplified serial interference cancellation in multiple-input multiple-output (MIMO) and non-MIMO wireless systems by using a single hardware element for multiple interference cancelled streams.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Jia Tang, Jong Hyeon Park, Shantanu Khare
  • Patent number: 8976903
    Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: March 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Parvathanathan Subrahmanya, Andrew Sendonaris, Jia Tang, Atul A. Salvekar, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
  • Patent number: 8890722
    Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
  • Publication number: 20140126443
    Abstract: The present disclosure presents a method and apparatus for reducing power consumption during a voice communication in a user equipment (UE). For example, the method may include receiving a plurality of frames associated with the voice communication. Further, such an example method may include determining whether a frame pattern based at least on the received plurality of frames corresponds to a transition from a speech burst period to a non-speech period, and disabling a portion of a receiver subsystem at the UE for at least a portion of a frame associated with the non-speech period. As such, the power consumption in a UE may be reduced.
    Type: Application
    Filed: April 3, 2013
    Publication date: May 8, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Nate Chizgi, Atul A. Salvekar, Prashant Udupa Sripathi, Madhup Chandra, Sharif A. Matin
  • Patent number: 8634332
    Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: January 21, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Jia Tang, Atul A. Salvekar, Jonathan Sidi, Jong Hyeon Park, Subramanya P. Rao, Abhinav Gupta, Shantanu Khare, Gokhan Mergen
  • Patent number: 8526319
    Abstract: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: September 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Yi Su, Jia Tang, Atul A. Salvekar, Lei Xiao, Gokhan Mergen, Jonathan Sidi
  • Patent number: 8514984
    Abstract: Certain aspects of the present disclosure relate to a method for iterative decoding with re-transmissions of data and to a method for iterative decoding with soft decision directed channel estimation.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: August 20, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Jia Tang, Atul A. Salvekar, Parvathanathan Subrahmanya, Andrew Sendonaris, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
  • Publication number: 20120249346
    Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 4, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
  • Patent number: 8199034
    Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: June 12, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
  • Publication number: 20120099446
    Abstract: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 26, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Yi Su, Jia Tang, Atul A. Salvekar, Lei Xiao, Gokhan Mergen, Jonathan Sidi
  • Publication number: 20120045024
    Abstract: Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to facilitate determination of log likelihood ratios (LLRs) in receivers using iterative decoders is further described. A Gaussian or non-Gaussian approximation method using a priori information may be used to determine a K-best list of values for summation to generate an LLR is also described.
    Type: Application
    Filed: February 23, 2011
    Publication date: February 23, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tao Cui, Jia Tang, Andrew Sendonaris, Atul A. Salvekar, Subramanya P.N. Rao, Parvathanathan Subrahmanya, Lei Xiao, Michael L. McCloud, Brian Clarke Banister
  • Publication number: 20110268019
    Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 3, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jia Tang, Atul A. Salvekar, Shantanu Khare, Gokhan Mergen, Jonathan Sidi, Jong Hyeon Park, Subramanya P. Rao, Abhinav Gupta
  • Publication number: 20110254714
    Abstract: A method for wireless communication is disclosed that includes selecting a plurality of probabilities for a symbol based on a bit-to-symbol mapping; calculating a conditional mean of the symbol based on the plurality of probabilities; and, generating a signal representative of the symbol based on the conditional mean of the symbol. An apparatus for performing the method is also disclosed.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 20, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Young Geun Cho, Jia Tang, Shantanu Khare, Ming-Chieh Kuo, Iwen Yao
  • Publication number: 20110051860
    Abstract: Certain aspects of the present disclosure relate to a method for iterative decoding with re-transmissions of data and to a method for iterative decoding with soft decision directed channel estimation.
    Type: Application
    Filed: September 21, 2009
    Publication date: March 3, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Jia Tang, Atul A. Salvekar, Parvathanathan Subrahmanya, Andrew Sendonaris, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
  • Publication number: 20110051831
    Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 3, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Parvathanathan Subrahmanya, Andrew Sendonaris, Jia Tang, Atul A. Salvekar, Shantanu Khare, Jong Hyeon Park, Brian C. Banister, Tao Cui
  • Publication number: 20110051858
    Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for simplified serial interference cancellation in multiple-input multiple-output (MIMO) and non-MIMO wireless systems by using a single hardware element for multiple interference cancelled streams.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 3, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Atul A. Salvekar, Jia Tang, Jong Hyeon Park, Shantanu Khare
  • Patent number: 7706768
    Abstract: A method for switched diversity, including: determining, on a pair-wise basis, a plurality of comparative quality factors corresponding to at least two antennas based on signals received by the at least two antennas; filtering, over a period of time, multiple instances of at least one of the plurality of comparative quality factors; and selecting at least one of the signals to couple to at least one receiver chain based on the comparative quality factors.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: April 27, 2010
    Assignee: Intel Corporation
    Inventors: Sigang Qiu, Sathish K. Kumar, Atul A. Salvekar