Patents by Inventor Tiangao Gou

Tiangao Gou 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: 12028821
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: estimating an overall frequency response of a compensation filter by stepping through a frequency range starting at an initial frequency and performing (1) through (3) at each step, a selected frequency at each step being a multiple of a subcarrier frequency of the initial frequency: (1) sending a single tone signal at the selected frequency, (2) determining a first response of a mismatched signal at the selected frequency and a second response of the mismatched signal at an image frequency of the selected frequency, and (3) estimating a frequency response of the compensation filter at the selected frequency based on the first response and the second response; generating time-domain filter taps based on the estimated overall frequency response of the compensation filter; determining a time delay based on the time-domain filter taps; and generating a compensated signal based on the time delay.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: July 2, 2024
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Publication number: 20220007318
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: estimating an overall frequency response of a compensation filter by stepping through a frequency range starting at an initial frequency and performing (1) through (3) at each step, a selected frequency at each step being a multiple of a subcarrier frequency of the initial frequency: (1) sending a single tone signal at the selected frequency, (2) determining a first response of a mismatched signal at the selected frequency and a second response of the mismatched signal at an image frequency of the selected frequency, and (3) estimating a frequency response of the compensation filter at the selected frequency based on the first response and the second response; generating time-domain filter taps based on the estimated overall frequency response of the compensation filter; determining a time delay based on the time-domain filter taps; and generating a compensated signal based on the time delay.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 6, 2022
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Patent number: 11129122
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: sending a single tone signal at an original frequency; determining a first response of an impaired signal at the original frequency and a second response of the impaired signal at a corresponding image frequency; determining an estimate of a frequency response of the compensation filter at the original frequency based on the first response and the second response; repeating the steps of sending the single tone signal, determining the first response and the second response, and determining the estimate of the frequency response of the compensation filter by sweeping the single tone signal at a plurality of steps to determine a snapshot of the frequency response of the compensation filter; converting the frequency response of the compensation filter to a plurality of time-domain filter taps of the compensation filter by performing a pseudo-inverse of a time-to-frequency conversion matrix; and determining a time delay that provides a minimal LSE fo
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: September 21, 2021
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Publication number: 20190380101
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: sending a single tone signal at an original frequency; determining a first response of an impaired signal at the original frequency and a second response of the impaired signal at a corresponding image frequency; determining an estimate of a frequency response of the compensation filter at the original frequency based on the first response and the second response; repeating the steps of sending the single tone signal, determining the first response and the second response, and determining the estimate of the frequency response of the compensation filter by sweeping the single tone signal at a plurality of steps to determine a snapshot of the frequency response of the compensation filter; converting the frequency response of the compensation filter to a plurality of time-domain filter taps of the compensation filter by performing a pseudo-inverse of a time-to-frequency conversion matrix; and determining a time delay that provides a minimal LSE fo
    Type: Application
    Filed: August 23, 2019
    Publication date: December 12, 2019
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Patent number: 10412698
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: sending a single tone signal at an original frequency; determining a first response of an impaired signal at the original frequency and a second response of the impaired signal at a corresponding image frequency; determining an estimate of a frequency response of the compensation filter at the original frequency based on the first response and the second response; repeating the steps of sending the single tone signal, determining the first response and the second response, and determining the estimate of the frequency response of the compensation filter by sweeping the single tone signal at a plurality of steps to determine a snapshot of the frequency response of the compensation filter; converting the frequency response of the compensation filter to a plurality of time-domain filter taps of the compensation filter by performing a pseudo-inverse of a time-to-frequency conversion matrix; and determining a time delay that provides a minimal LSE fo
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: September 10, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Publication number: 20180242269
    Abstract: A method for providing IQ mismatch (IQMM) compensation includes: sending a single tone signal at an original frequency; determining a first response of an impaired signal at the original frequency and a second response of the impaired signal at a corresponding image frequency; determining an estimate of a frequency response of the compensation filter at the original frequency based on the first response and the second response; repeating the steps of sending the single tone signal, determining the first response and the second response, and determining the estimate of the frequency response of the compensation filter by sweeping the single tone signal at a plurality of steps to determine a snapshot of the frequency response of the compensation filter; converting the frequency response of the compensation filter to a plurality of time-domain filter taps of the compensation filter by performing a pseudo-inverse of a time-to-frequency conversion matrix; and determining a time delay that provides a minimal LSE fo
    Type: Application
    Filed: May 18, 2017
    Publication date: August 23, 2018
    Inventors: Tiangao Gou, Pranav Dayal, Niranjan Ratnakar, Gennady Feygin, Jungwon Lee
  • Patent number: 9532280
    Abstract: An electronic system includes: a communication channel configured to connect a first device to a second device; a search channel configured to search for a third device in parallel to the communication channel connected to the first device and the second device; and a communication unit configured to handover the communication channel to connect the first device and the third device without the second device.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: December 27, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Claudio Rafael Cunha Monteiro da Silva, Tiangao Gou, Jungwon Lee, Inyup Kang
  • Patent number: 9363072
    Abstract: A computing system includes: a communication unit configured to: identify a first synchronization symbol and a second synchronization symbol corresponding to a synchronization signal, generate the synchronization signal including the first synchronization symbol and the second synchronization symbol using a synchronization generator mechanism and a prefix generator mechanism; and an inter-device interface coupled to the communication unit, configured to communicate the synchronization signal for synchronizing a first device and a second device for communicating a serving content.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: June 7, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Niranjan N. Ratnakar, Tiangao Gou, Pranav Dayal, Jungwon Lee, Hyunseok Ryu
  • Publication number: 20150341164
    Abstract: A computing system includes: a communication unit configured to: identify a first synchronization symbol and a second synchronization symbol corresponding to a synchronization signal, generate the synchronization signal including the first synchronization symbol and the second synchronization symbol using a synchronization generator mechanism and a prefix generator mechanism; and an inter-device interface coupled to the communication unit, configured to communicate the synchronization signal for synchronizing a first device and a second device for communicating a serving content.
    Type: Application
    Filed: November 10, 2014
    Publication date: November 26, 2015
    Inventors: Niranjan N. Ratnakar, Tiangao Gou, Pranav Dayal, Jungwon Lee, Hyunseok Ryu
  • Patent number: 9124397
    Abstract: A wireless communication system includes: a communication interface configured to receive a desired input signal and an interference input signal; and a control module, coupled to the communication interface, configured to calculate a capacity region to maximize a first R1 reference for the desired input signal by removing the interference input signal.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: September 1, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu, Tiangao Gou, Inyup Kang
  • Publication number: 20150126194
    Abstract: An electronic system includes: a communication channel configured to connect a first device to a second device; a search channel configured to search for a third device in parallel to the communication channel connected to the first device and the second device; and a communication unit configured to handover the communication channel to connect the first device and the third device without the second device.
    Type: Application
    Filed: October 21, 2014
    Publication date: May 7, 2015
    Inventors: Claudio Rafael Cunha Monteiro da Silva, Tiangao Gou, Jungwon Lee, Inyup Kang
  • Publication number: 20140274092
    Abstract: A wireless communication system includes: a communication interface configured to receive a desired input signal and an interference input signal; and a control module, coupled to the communication interface, configured to calculate a capacity region to maximize a first R1 reference for the desired input signal by removing the interference input signal.
    Type: Application
    Filed: May 3, 2013
    Publication date: September 18, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu, Tiangao Gou, Inyup Kang
  • Patent number: 8472550
    Abstract: This invention provides a method for exploiting precoder optimization gains and multi-user diversity gains with interference alignment in general MIMO wireless networks including multiple users. Specifically, two embodiments exploit either a gradient-based search or iteratively orthogonalizing inference. The method can achieve near-optimal performance at a low complexity. Furthermore, a scheduling criterion is provided for wireless networks comprised of a large number of mobile stations in each cell. The criterion can be done independently in each cell to significantly reduce information exchanged between base stations in different cells compared to the methods that perform joint scheduling over all cells. The two embodiments can be utilized in a spectrally efficient communications network equipped with relaying nodes.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: June 25, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Toshiaki Koike-Akino, Tiangao Gou, Man-On Pun
  • Publication number: 20120163433
    Abstract: This invention provides a method for exploiting precoder optimization gains and multi-user diversity gains with interference alignment in general MIMO wireless networks including multiple users. Specifically, two embodiments exploit either a gradient-based search or iteratively orthogonalizing inference. The method can achieve near-optimal performance at a low complexity. Furthermore, a scheduling criterion is provided for wireless networks comprised of a large number of mobile stations in each cell. The criterion can be done independently in each cell to significantly reduce information exchanged between base stations in different cells compared to the methods that perform joint scheduling over all cells. The two embodiments can be utilized in a spectrally efficient communications network equipped with relaying nodes.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Inventors: Toshiaki Koike-Akino, Tiangao Gou, Man-On Pun