Patents by Inventor Sridhar Ramesh

Sridhar Ramesh 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: 20240155494
    Abstract: A user equipment (UE) may monitor a channel for wireless communication associated with a first radio access technology (RAT) during one or more of a first active duration or a first inactive duration. The UE may operate in a first power mode during the first inactive duration. The UE may monitor the channel for wireless communication associated with a second RAT during one or more of a second active duration or a second inactive duration. The UE may operate during the second inactive duration in one or more of the first power mode or a second power. The UE may operate according to the first mode or the second mode based on the monitoring of the channel associated with the first RAT and the second RAT.
    Type: Application
    Filed: January 18, 2024
    Publication date: May 9, 2024
    Inventors: Reza SHAHIDI, Brian Clarke BANISTER, Vishal MAHAJAN, Vikram RAMESH BABU, Joshua Tennyson MACDONALD, Thawatt GOPAL, Udayan BHAWNANI, Yu FU, Bhupesh Manoharlal UMATT, Sridhar BANDARU, Scott HOOVER, Brian GEORGE, Hemanth Kumar RAYAPATI, Sunil KC, Sandeep RAMANNAVAR, Sandeep RAO
  • Patent number: 11902187
    Abstract: Methods and systems are provided for using frequency spreading during communications, in particular communications in which multiple carriers (or subcarriers) are used. The frequency spreading may comprise generating a plurality of spreading data vectors based on transmit data, such as by application of a spreading matrix to portions of the transmit data. Each spreading data vector may comprise a plurality of elements, for assignment to the multiple subcarriers. The receive-side device may then apply frequency de-spreading, to obtain the original transmit data. The frequency de-spreading may comprise use of the same spreading matrix on data extracted from received signals, which (the data) may correspond to the plurality of spreading data vectors.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: February 13, 2024
    Assignee: MaxLinear, Inc.
    Inventors: Sridhar Ramesh, Curtis Ling, Xing Tan
  • Publication number: 20230327922
    Abstract: According to an aspect of an embodiment, a decision feedback equalizer (DFE) may be configured for noise suppression slicing. The DFE may be configured to receive, from a feedforward equalizer, an output signal having a received (Rx) symbol. The DFE may be configured to initialize noise suppression slicer (NSS) parameters including one or more initial NSS coefficients and one or more initial slicer deferred decision (SDD) threshold offsets. The DFE may be configured to determine one or more updated NSS coefficients. The DFE may be configured to determine one or more updated SDD threshold offsets. The DFE may be configured to update the NSS parameters of a processing register based on the one or more updated NSS coefficients and the one or more updated SDD threshold offsets.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 12, 2023
    Inventors: Sridhar Ramesh, Ioannis Spyropoulos
  • Publication number: 20230188179
    Abstract: A cable modem comprises transmitter circuitry, receiver circuitry, and memory. Upon power up of the cable modem in the field, the transmitter circuitry transmits one or more first signals into a network. The receiver circuitry measure echoes of the transmitted one or more first signals. The receiver circuitry generates an installation figure of merit based on the measured echoes and factory-calibration echo measurements stored in the memory. The communication device begins DOCSIS® network registration if the installation quality measurement meets a determined requirement and generates a notification to troubleshoot the installation of the communication device if the installation quality measurement does not meet a determined requirement.
    Type: Application
    Filed: November 15, 2022
    Publication date: June 15, 2023
    Inventor: Sridhar Ramesh
  • Patent number: 11502723
    Abstract: A cable modem comprises transmitter circuitry, receiver circuitry, and memory. Upon power up of the cable modem in the field, the transmitter circuitry transmits one or more first signals into a network. The receiver circuitry measure echoes of the transmitted one or more first signals. The receiver circuitry generates an installation figure of merit based on the measured echoes and factory-calibration echo measurements stored in the memory. The communication device begins DOCSIS® network registration if the installation quality measurement meets a determined requirement and generates a notification to troubleshoot the installation of the communication device if the installation quality measurement does not meet a determined requirement.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 15, 2022
    Assignee: MaxLinear, Inc.
    Inventor: Sridhar Ramesh
  • Publication number: 20220286245
    Abstract: Methods and systems are provided for using frequency spreading during communications, in particular communications in which multiple carriers (or subcarriers) are used. The frequency spreading may comprise generating a plurality of spreading data vectors based on transmit data, such as by application of a spreading matrix to portions of the transmit data. Each spreading data vector may comprise a plurality of elements, for assignment to the multiple subcarriers. The receive-side device may then apply frequency de-spreading, to obtain the original transmit data. The frequency de-spreading may comprise use of the same spreading matrix on data extracted from received signals, which (the data) may correspond to the plurality of spreading data vectors.
    Type: Application
    Filed: May 24, 2022
    Publication date: September 8, 2022
    Inventors: Sridhar Ramesh, Curtis Ling, Xing Tan
  • Patent number: 11343032
    Abstract: Methods and systems are provided for using frequency spreading during communications, in particular communications in which multiple carriers (or subcarriers) are used. The frequency spreading may comprise generating a plurality of spreading data vectors based on transmit data, such as by application of a spreading matrix to portions of the transmit data. Each spreading data vector may comprise a plurality of elements, for assignment to the multiple subcarriers. The receive-side device may then apply frequency de-spreading, to obtain the original transmit data. The frequency de-spreading may comprise use of the same spreading matrix on data extracted from received signals, which (the data) may correspond to the plurality of spreading data vectors.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: May 24, 2022
    Assignee: MaxLinear, Inc.
    Inventors: Sridhar Ramesh, Curtis Ling, Xing Tan
  • Patent number: 11329407
    Abstract: An ideal tap may have a plurality of ports that include at least an input port configured for receiving downstream (DS) signals from and transmitting upstream (US) signals to nodes upstream from the tap within the coaxial network, and one or more other ports that comprise at least one of an output port configured for transmitting downstream (DS) signals to and receiving upstream (US) signals from nodes downstream from the tap within the coaxial network, and a drop port for receiving signal from and transmitting signals to customer premise equipment (CPE) in the coaxial network. The ideal tap may further include processing circuits for handling signals received and transmitted via the tap, with the one or more processing circuits being configured to meet particular predefined tap performance criteria, and to specifically apply, during handling of signals in the tap, frequency shifting based on one or more frequency spectrum shift conditions.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 10, 2022
    Assignee: MAXLINEAR, INC.
    Inventors: Steven John Krapp, Sridhar Ramesh
  • Patent number: 11005526
    Abstract: An electronic communication device comprises echo cancellation circuitry and signal modification circuitry. The echo cancellation circuitry may be operable to generate a first signal that approximates interference present in a second signal. The signal modification circuitry may be operable to generate a first cancellation signal in a frequency band that is not used on a communication medium over which the electronic communication device is configured to communicate. The signal modification circuitry may be operable to combine the first cancellation signal with the first signal, wherein the combining of the signals results in a modified first signal that has a lower crest factor and/or peak-to-average power ratio than the first signal. The signal modification circuitry may be operable to combine the modified first signal with the second signal to reduce interference present in the second signal.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 11, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Kenneth Scott Walley, Steve Krapp, Eitan Tsur, Sridhar Ramesh
  • Patent number: 10950956
    Abstract: Systems and methods are provided for utilizing ideal taps in coaxial networks. An ideal tap may have a plurality of ports that include at least an input port configured for receiving downstream (DS) signals from and transmitting upstream (US) signals to nodes upstream from the tap within the coaxial network; an output port configured for transmitting downstream (DS) signals to and receiving upstream (US) signals from nodes downstream from the tap within the coaxial network; and one or more drop ports for receiving signal from and transmitting signals to customer premise equipment (CPE) in the coaxial network. The ideal tap may further include processing circuits for handling signals received and transmitted via the tap, with the one or more processing circuits being configured to meet particular predefined tap performance criteria, where the particular predefined tap performance criteria comprise one or more of high return loss, high port-to-port isolation, and high port-to-port gain.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 16, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Steven John Krapp, Sridhar Ramesh
  • Patent number: 10910710
    Abstract: Systems and methods are provided for distortion redirection in phased arrays. In an electronic device configured for transmission and reception of signals and having a two-dimensional phased array, effects of distortion, corresponding to at least one processing function applied during communication of signals, on the communication of signals may be assessed, and based on the effects of distortion, one or more adjustments for mitigating the effects of distortion may be configured and applied during processing of signals. Assessing the effects of distortion may include determining one or more characteristics associated with the communication of the signals, where the one or more characteristics relate and/or are subject to the effects of the distortion, and assessing the effects of distortion based on the one or more characteristics.
    Type: Grant
    Filed: November 17, 2018
    Date of Patent: February 2, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Curtis Ling, Sridhar Ramesh
  • Publication number: 20200366007
    Abstract: An ideal tap may have a plurality of ports that include at least an input port configured for receiving downstream (DS) signals from and transmitting upstream (US) signals to nodes upstream from the tap within the coaxial network, and one or more other ports that comprise at least one of an output port configured for transmitting downstream (DS) signals to and receiving upstream (US) signals from nodes downstream from the tap within the coaxial network, and a drop port for receiving signal from and transmitting signals to customer premise equipment (CPE) in the coaxial network. The ideal tap may further include processing circuits for handling signals received and transmitted via the tap, with the one or more processing circuits being configured to meet particular predefined tap performance criteria, and to specifically apply, during handling of signals in the tap, frequency shifting based on one or more frequency spectrum shift conditions.
    Type: Application
    Filed: August 5, 2020
    Publication date: November 19, 2020
    Inventors: Steven John Krapp, Sridhar Ramesh
  • Patent number: 10763957
    Abstract: Systems and methods are provided for supporting redundancy and outage resolution in coaxial networks with ideal taps.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: September 1, 2020
    Assignee: MaxLinear, Inc.
    Inventors: Steven J. Krapp, Sridhar Ramesh, Curtis Ling, Leonard Dauphinee, Kenneth S. Walley
  • Patent number: 10700736
    Abstract: Systems and methods are provided for full duplex DOCSIS cable modem echo cancellation with training. During reception of downstream signals, echo effects on downstream signals may be determined, with at least some of the echo effects corresponding to concurrently transmitted upstream signals. Echo cancellation corrections may be determined based on the determined echo effects, and the echo cancellation corrections may be applied during processing of the downstream signals. The echo cancellation corrections may include one or both of ACI (adjacent channel interference) cancellation corrections and ALI (adjacent leakage interference) cancellation correction. The echo cancellation may include or be based on preforming echo cancellation training, during active communication and based on one or both of the downstream signals and the upstream signals.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 30, 2020
    Assignee: MaxLinear, Inc.
    Inventors: Sridhar Ramesh, Kenneth Scott Walley
  • Patent number: 10644733
    Abstract: Methods and systems for crest factor reduction may comprise generating an original waveform, generating a distortion signal by reducing a crest factor of the original waveform, generating an error signal by subtracting out the original waveform from the distortion signal, and generating a conditioned waveform by adding the error signal to the original waveform. The crest factor of the original waveform may be reduced based on spectral mask requirements. The crest factor of the original waveform may be reduced using a limiter. The power amplifier may comprise a programmable gain amplifier (PGA). The distortion signal may be generated based on a PGA model and/or a predistortion model. A signal from an output of the PA may be fed back to the PGA model. The PGA model may be dynamically configured. The crest factor of the original waveform may be reduced in an analog domain and/or a digital domain.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: May 5, 2020
    Assignee: MAXLINEAR, INC.
    Inventors: Sridhar Ramesh, Timothy Gallagher, Shantha Murthy Prem Swaroop, Ali Shahed hagh ghadam
  • Patent number: 10645653
    Abstract: Methods and systems for providing reduced bandwidth acquisition latency may comprise communicating a reservation request for bandwidth allocation for devices operating under a wired network protocol, where the reservation request may be sent by wired network devices via a wireless network protocol over a wireless network. Bandwidth may be allocated in the wired network for the requesting devices by a network controller. Data may be communicated with the requesting devices via the wired network. The wired network communication protocol may comprise a multimedia over cable alliance (MoCA) standard. The wireless protocol may comprise an IEEE 802.11x standard, a Bluetooth standard, and/or any non-public network protocol. The communication of the reservation request via the wireless protocol may decrease a latency of the wired network. A medium access plan (MAP) may be generated by the network controller based on the reservation request and may comprise a bandwidth allocation for the requesting devices.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: May 5, 2020
    Assignee: Maxlinear, Inc.
    Inventors: James Qiu, Sridhar Ramesh, Sheng Ye, Curtis Ling
  • Publication number: 20200127732
    Abstract: Systems and methods are provided for supporting redundancy and outage resolution in coaxial networks with ideal taps.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 23, 2020
    Inventors: Steven J. Krapp, Sridhar Ramesh, Curtis Ling, Leonard Dauphinee, Kenneth S. Walley
  • Patent number: 10608700
    Abstract: Systems and methods are provided for utilizing low gain low noise signal amplification and ideal taps in coaxial networks. An ideal tap configured for use in coaxial networks may have a plurality of ports, one or more processing circuits configured for handling reception and transmission of signals communicated via the tap, and one or more echo cancellation circuits configured for providing echo cancellation during operations of the tap. The processing circuits are configured based on particular predefined tap performance criteria. The tap performance criteria may relate to one or more of port-to-port isolation, return loss, port-to-port gain, and up-tilt. The echo cancellation circuits may be configurable for providing the echo cancellation based on the tap performance criteria. The echo cancellation circuits may include an echo cancellation control circuit for controlling echo cancellation functions and/or operations. The echo cancellation circuits may include dedicated per-port echo cancellation circuits.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: March 31, 2020
    Assignee: MaxLinear, Inc.
    Inventors: Steven John Krapp, Sridhar Ramesh
  • Patent number: 10601668
    Abstract: Methods and systems are provided for adaptive management of local networks, such as in-premises networks, which may have access to and/or may be connected to external networks, such cable or satellite networks. A network management device that manages a local network may receive from a client device in the local network, a communication request relating to communication within the local network, may process the communication request, and may configure the communication of the client device based on processing of the communication request. The processing of the communication request may include assessing effects of communication of the client device, at the network management device, on other connections and/or communications, with the other connections and/or communications including external connections and/or communications with one or more devices and/or networks external to the local network.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: March 24, 2020
    Assignee: MAXLINEAR, INC.
    Inventors: Sridhar Ramesh, Curtis Ling, Glenn Chang
  • Patent number: 10601462
    Abstract: A cable modem comprises transceiver circuitry and echo cancellation training circuitry. The transceiver circuitry may be operable to transmit and receive signals on a full-duplex Data Over Cable System Interface Specification (DOCSIS®) network. The echo cancellation training circuitry may be operable to: determine an echo cancellation training group to which the electronic communication device belongs; determine one or more training periods during which the echo cancellation training group is permitted to transmit training signals; and transmit an echo cancellation training signal during the determined training one or more periods and use the transmitted training signal to train echo cancellation circuitry of the cable modem.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: March 24, 2020
    Assignee: MaxLinear, Inc.
    Inventors: Kenneth Scott Walley, Steve Krapp, Eitan Tsur, Sridhar Ramesh