Patents by Inventor Chandrashekhar THEJASWI

Chandrashekhar THEJASWI 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: 11956105
    Abstract: Embodiments of the present disclosure relate to a method, an apparatus and a computer readable storage medium for generating soft-decision information for a receiver. In example embodiments, a method is provided. The method includes receiving, at a first device, a signal from a second device, the signal corresponding to a group of symbols transmitted from the second device; determining, by performing Lattice Reduction linear detection on the signal, a first group of estimated symbols for the group of symbols; determining, by performing iterative interference cancellation on the first group of estimated symbols, a second group of estimated symbols for the group of symbols; and generating, based on the second group of estimated symbols, soft-decision information about the group of symbols for use by a decoder at the first device. Embodiments of the present disclosure can improve the receiver performance with reduced complexity.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: April 9, 2024
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Chandrashekhar Thejaswi, Suresh Kalyanasundaram, Karthik Kuntikana Shrikrishna, Francis Dominique, Lele Shen
  • Publication number: 20230080729
    Abstract: Embodiments of the present disclosure relate to a method, an apparatus and a computer readable storage medium for generating soft-decision information for a receiver. In example embodiments, a method is provided. The method includes receiving, at a first device, a signal from a second device, the signal corresponding to a group of symbols transmitted from the second device; determining, by performing Lattice Reduction linear detection on the signal, a first group of estimated symbols for the group of symbols; determining, by performing iterative interference cancellation on the first group of estimated symbols, a second group of estimated symbols for the group of symbols; and generating, based on the second group of estimated symbols, soft-decision information about the group of symbols for use by a decoder at the first device. Embodiments of the present disclosure can improve the receiver performance with reduced complexity.
    Type: Application
    Filed: January 22, 2020
    Publication date: March 16, 2023
    Inventors: Chandrashekhar THEJASWI, Suresh KALYANASUNDARAM, Karthik KUNTIKANA SHRIKRISHNA, Francis DOMINIQUE, Lele SHEN
  • Patent number: 11546040
    Abstract: Systems, methods, apparatuses, and computer program products for determining a grid-of-beams (GoB) are provided. One method may include collecting network data for training a neural network, train the neural network, using the collected data, to learn a non-discounted cumulative reward Q that evaluates a benefit of including a given beam into a grid-of-beams (GoB), iteratively applying the trained neural network to select at least one optimal beam to include in the grid-of-beams (GoB), and selecting one or more beams from the grid-of-beams (GoB) to transmit to a user equipment or to receive transmission from the user equipment.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: January 3, 2023
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Deepak Nayak, Chandrashekhar Thejaswi, Suresh Kalyanasundaram, Rajeev Agrawal, Hua Xu, Anand Bedekar, Veronique Capdevielle, Claudiu Mihailescu, Boris Kouassi, Afef Feki
  • Patent number: 11411600
    Abstract: An apparatus is disclosed, comprising means for identifying a plurality of user equipment (UE), each transmitting one or more uplink packets for decoding at a base station associated with a given cell of a radio network. The apparatus further comprises means for clustering the identified user equipment into joint processing groups, each joint processing group comprising the identities of two or more user equipment as clustered and means for performing, in a first processing stage, joint processing of the uplink data streams for identified user equipment within common joint processing groups using one or more first processing algorithms to produce corresponding first processed uplink data streams.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: August 9, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Chandrashekhar Thejaswi, Suresh Kalyanasundaram, Rajeev Agrawal, Francis Dominique, Karthik Kuntikana Shrikrishna
  • Publication number: 20220006485
    Abstract: An apparatus is disclosed, comprising means for identifying a plurality of user equipment (UE), each transmitting one or more uplink packets for decoding at a base station associated with a given cell of a radio network. The apparatus further comprises means for clustering the identified user equipment into joint processing groups, each joint processing group comprising the identities of two or more user equipment as clustered and means for performing, in a first processing stage, joint processing of the uplink data streams for identified user equipment within common joint processing groups using one or more first processing algorithms to produce corresponding first processed uplink data streams.
    Type: Application
    Filed: October 21, 2019
    Publication date: January 6, 2022
    Inventors: Chandrashekhar THEJASWI, Suresh KALYANASUNDARAM, Rajeev AGRAWAL, Francis DOMINIQUE, Karthik KUNTIKANA SHRIKRISHNA
  • Publication number: 20210320709
    Abstract: Systems, methods, apparatuses, and computer program products for determining a grid-of-beams (GoB) are provided. One method may include collecting network data for training a neural network, train the neural network, using the collected data, to learn a non-discounted cumulative reward Q that evaluates a benefit of including a given beam into a grid-of-beams (GoB), iteratively applying the trained neural network to select at least one optimal beam to include in the grid-of-beams (GoB), and selecting one or more beams from the grid-of-beams (GoB) to transmit to a user equipment or to receive transmission from the user equipment.
    Type: Application
    Filed: September 13, 2018
    Publication date: October 14, 2021
    Inventors: Deepak NAYAK, Chandrashekhar THEJASWI, Suresh KALYANASUNDARAM, Rajeev AGRAWAL, Hua XU, Anand BEDEKAR, Veronique CAPDEVIELLE, Claudiu MIHAILESCU, Boris KOUASSI, Afef FEKI
  • Patent number: 10735226
    Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence. The ternary sequence includes elements of ?1, 0, and 1.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: August 4, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Soon Park, Young Jun Hong, Sujit Jos, Young Soo Kim, Chandrashekhar Thejaswi Ps, Kiran Bynam, Manoj Choudhary
  • Patent number: 10491434
    Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sujit Jos, Chandrashekhar Thejaswi PS, Kiran Bynam, Young Jun Hong, Chang Soon Park, Manoj Choudhary
  • Publication number: 20190334744
    Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence. The ternary sequence includes elements of ?1, 0, and 1.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 31, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Soon PARK, Young Jun HONG, Sujit JOS, Young Soo KIM, Chandrashekhar Thejaswi PS, Kiran BYNAM, Manoj CHOUDHARY
  • Patent number: 10461982
    Abstract: A method and apparatus estimating carrier frequency offset (CFO) with timing synchronization are provided. The apparatus includes processor that receives analog-to-digital converter (ADC) samples, determines a coarse angle from the received ADC samples, obtains an improved coarse angle by altering the coarse angle based on a preamble duration, determines a base CFO estimate from the improved coarse angle and determines a plurality of candidate CFOs based on the base CFO estimate and a difference frequency.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sujit Jos, Kiran Bynam, Chang Soon Park, Jinesh Parameshwaran Nair, Chandrashekhar Thejaswi Pattaguppe Suryanarayan Bhat, Young Jun Hong, Young Soo Kim
  • Patent number: 10404610
    Abstract: Disclosed is a method and system to transmit independent data by at least two transmitters to corresponding at least two receivers. The method includes obtaining, at a first transmitter, a first ternary sequence from a first base ternary sequence corresponding to a first set of data-symbols, and obtaining, at a second transmitter, a second ternary sequence from a second base ternary sequence corresponding to a second set of data-symbols. The method also includes transmitting, from the first transmitter, the first ternary sequence to a first set of receivers associated with the first transmitter. The method transmits, from the second transmitter, the second ternary sequence to a second set of receivers associated with the second transmitter.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sujit Jos, Chandrashekhar Thejaswi Ps, Chang Soon Park, Kiran Bynam, Young Jun Hong
  • Patent number: 10348533
    Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence. The ternary sequence includes elements of ?1, 0, and 1.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Soon Park, Young Jun Hong, Sujit Jos, Young Soo Kim, Chandrashekhar Thejaswi PS, Kiran Bynam, Manoj Choudhary
  • Publication number: 20190140868
    Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sujit JOS, Chandrashekhar Thejaswi PS, Kiran BYNAM, Young Jun HONG, Chang Soon PARK, Manoj CHOUDHARY
  • Patent number: 10257325
    Abstract: Provided is a method and apparatus of a receiver. The method and apparatus include generating a macro sequence of a length using a complementary-symmetry property. The method and apparatus also obtain a preamble sequence for a communication mode based on the macro sequence.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: April 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chandrashekhar Thejaswi Ps, Kiran Bynam, ChangSoon Park, Young-Jun Hong, Manoj Choudhary
  • Patent number: 10205612
    Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sujit Jos, Chandrashekhar Thejaswi Ps, Kiran Bynam, Young Jun Hong, Chang Soon Park, Manoj Choudhary
  • Publication number: 20180331874
    Abstract: A method and apparatus estimating carrier frequency offset (CFO) with timing synchronization are provided. The apparatus includes processor that receives analog-to-digital converter (ADC) samples, determines a coarse angle from the received ADC samples, obtains an improved coarse angle by altering the coarse angle based on a preamble duration, determines a base CFO estimate from the improved coarse angle and determines a plurality of candidate CFOs based on the base CFO estimate and a difference frequency.
    Type: Application
    Filed: January 22, 2018
    Publication date: November 15, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: SUJIT JOS, KIRAN BYNAM, CHANG SOON PARK, JINESH PARAMESHWARAN NAIR, CHANDRASHEKHAR THEJASWI PATTAGUPPE SURYANARAYAN BHAT, YOUNG JUN HONG, YOUNG SOO KIM
  • Publication number: 20180254929
    Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence.
    Type: Application
    Filed: May 4, 2018
    Publication date: September 6, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Young Jun HONG, Sujit JOS, Young Soo KIM, Chandrashekhar Thejaswi PS, Kiran BYNAM, Manoj CHOUDHARY
  • Publication number: 20180159705
    Abstract: The present invention describes a method and system for simultaneous transmission of data to coherent and non-coherent receivers. The method at the transmitter includes retrieving a base ternary sequence having a pre-defined length, obtaining one or more ternary sequences corresponding to data to be transmitted and transmitting the obtained one or more ternary sequences by the transmitter. The method steps at the receiver includes receiving one or more ternary sequences corresponding to the data transmitted, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the base ternary sequence by the receiver if the receiver is a coherent receiver, demodulating each of the received ternary sequences by correlating with all cyclic shifts of the absolute of the base ternary sequence by the receiver if the receiver is a non-coherent receiver and detecting the transmitted data based on the cyclic shifts corresponding to maximum correlation values.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 7, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sujit JOS, Chandrashekhar Thejaswi PS, Kiran BYNAM, Young Jun HONG, Chang Soon PARK, Manoj CHOUDHARY
  • Patent number: 9967114
    Abstract: A method and a transmitter for transmitting a pay load sequence are provided. The transmitter includes a ternary sequence mapper configured to map a binary data sequence to a ternary sequence stored in the transmitter, and a pulse shaping filter configured to generate a first signal based on the mapped ternary sequence. The ternary sequence includes elements of ?1, 0, and 1.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon Park, Young Jun Hong, Sujit Jos, Young Soo Kim, Chandrashekhar Thejaswi Ps, Kiran Bynam, Manoj Choudhary
  • Publication number: 20180048583
    Abstract: Disclosed is a method and system to transmit independent data by at least two transmitters to corresponding at least two receivers. The method includes obtaining, at a first transmitter, a first ternary sequence from a first base ternary sequence corresponding to a first set of data-symbols, and obtaining, at a second transmitter, a second ternary sequence from a second base ternary sequence corresponding to a second set of data-symbols. The method also includes transmitting, from the first transmitter, the first ternary sequence to a first set of receivers associated with the first transmitter. The method transmits, from the second transmitter, the second ternary sequence to a second set of receivers associated with the second transmitter.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 15, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sujit JOS, Chandrashekhar Thejaswi PS, Chang Soon PARK, Kiran BYNAM, Young Jun HONG