Patents by Inventor Shaul Shulman

Shaul Shulman 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: 11296920
    Abstract: A high-speed serial interface (HSIF) for communicating between an analog front end (AFE) and a System on a Chip (SoC) digital radio via a bi-directional serial bit connection for an OFDM cable modem includes generating Status Frames and Data Frames to be communicated between the tuner and AFE and sending the generated Status Frames and Data Frames on a continual basis. Each Frame is a 10-bit K.28 Comma Sync word followed by a payload and when no data is queued to be communicated, Status Frames are sent asynchronously as filler frames.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 5, 2022
    Assignee: MaxLinear, Inc.
    Inventor: Shaul Shulman
  • Publication number: 20220094392
    Abstract: A cable modem transceiver includes a processor configured to derive an instant of time for an upstream calibration signal on basis of upstream scheduling information. Further, the cable modem transceiver includes a transmitter configured to generate the upstream calibration signal at the derived instant of time. The cable modem transceiver additionally includes a detector configured to determine a property of the generated upstream calibration signal. The processor is further configured to derive at least one calibration parameter for the transmitter on basis of the detected property.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 24, 2022
    Inventors: Nathan Goichberg, Shaul Shulman
  • Publication number: 20220021475
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Application
    Filed: July 23, 2021
    Publication date: January 20, 2022
    Applicant: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 11133915
    Abstract: A cable modem supporting full duplex (FDX) operations. The cable modem includes a transmit circuitry configured to process a transmit signal and a receive circuitry configured to process a receive signal. The receive circuitry includes a switchable analog filter configured to filter the receive signal. The switchable analog filter is configurable for different passband frequencies. The receive circuitry also includes a digital compensation filter configured to compensate a difference in frequency response in a specific frequency band due to switching of the switchable analog filter for a different passband frequency. The cable modem also includes an adjacent channel interference (ACI) cancellation filter and an adjacent leakage interference (ALI) cancellation filter. A digital compensation filter is also used in processing the ACI cancellation signal and the ALI cancellation signal to impose or compensate the difference in frequency response due to the switchable analog filter switching.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: September 28, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Boaz Kol, Noam Tal, Shaul Shulman, Thushara Hewavithana
  • Patent number: 11133840
    Abstract: A cable modem transceiver includes a processor configured to derive an instant of time for an upstream calibration signal on basis of upstream scheduling information. Further, the cable modem transceiver includes a transmitter configured to generate the upstream calibration signal at the derived instant of time. The cable modem transceiver additionally includes a detector configured to determine a property of the generated upstream calibration signal. The processor is further configured to derive at least one calibration parameter for the transmitter on basis of the detected property.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 28, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Nathan Goichberg, Shaul Shulman
  • Publication number: 20210297277
    Abstract: Examples relate to a control apparatus, control device and control method for a cable modem, and to a cable modem. The control apparatus or control device comprises interface circuitry or communication means for communicating with one or more other components of the cable modem, and processing circuitry or processing means that is configured to obtain information on a temperature of a power amplifier or power amplification means of the cable modem from temperature measurement circuitry or temperature measurement means of the cable modem, and to control a duty cycle of the power amplifier based on the information on the temperature.
    Type: Application
    Filed: December 20, 2020
    Publication date: September 23, 2021
    Inventors: Shaul SHULMAN, Barak HERMESH, Nathan GOICHBERG
  • Patent number: 11075713
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 27, 2021
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 11012269
    Abstract: A device includes a digital frontend. The digital frontend is configured to digitally modulate symbols for digital signals of a plurality of channels according to a transmission protocol. Each channel is associated with at least one respective carrier frequency within a transmission bandwidth. The digital frontend is further configured to combine the digital signals to obtain a digital output signal. The device further includes an analog frontend having a digital-to-analog converter configured to convert the digital output signal into an analog output signal. The analog frontend also includes a programmable gain amplifier configured to apply an analog gain to the analog output signal. The device further includes a control logic configured to determine the analog gain based on calibration data indicative of the frequency response of the analog frontend across a transmission bandwidth.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: May 18, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Shaul Shulman, Nathan Goichberg
  • Patent number: 10911253
    Abstract: A cable modem (CM) system for utilizing additional bandwidth is disclosed. The system includes a receiver path, a feedback path, and a feedback receiver. The receiver path is configured to obtain a base signal having a base bandwidth from a downstream signal. The feedback path is configured to obtain an additional signal having an additional bandwidth from the downstream signal and convert the additional signal to a feedback bandwidth. The feedback receiver of a cable modem tuner is configured to process the additional signal using the feedback bandwidth.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: February 2, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Nathan Goichberg, Shaul Shulman
  • Patent number: 10848267
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 24, 2020
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 10826635
    Abstract: Synchronizing methods and architectures for cable modems to transmit and receive Full Duplex (FDX) resource block allocations (RBAs) using filter switching and coordinated updating of equalization coefficients. A cable modem including a block of switchable filters, an analog front end (AFE) and a PHY/MAC System on a Chip (SoC) tuner to, at least in part, provide signals to switch the switchable filters in accordance with the RBA changes and synchronize updating tuner equalizations to match filter switching in a coordinated manner by marking received data at the AFE.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: November 3, 2020
    Assignee: MaxLinear, Inc.
    Inventors: Nathan Goichberg, Shaul Shulman, Thushara Hewavithana
  • Patent number: 10742264
    Abstract: A cable modem system for discovering interference groups (IGs) includes an infrastructure and a cable modem termination system (CMTS). The infrastructure is for transferring data. The CMTS is configured to initiate generation of test signals by a set of cable modems (CMs), obtain a set of test measurements for the set of CMs, discover interference groups (IGs) of the set of CMs based on the obtained set of test measurements and assign a plurality of upstream and downstream channels for the set of CMs that use orthogonal frequency division multiplexing (OFDM) based on the discovered IGs.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 11, 2020
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Thushara Hewavithana, Noam Tal, Shaul Shulman
  • Publication number: 20200252229
    Abstract: A cable modem (CM) system for utilizing additional bandwidth is disclosed. The system includes a receiver path, a feedback path, and a feedback receiver. The receiver path is configured to obtain a base signal having a base bandwidth from a downstream signal. The feedback path is configured to obtain an additional signal having an additional bandwidth from the downstream signal and convert the additional signal to a feedback bandwidth. The feedback receiver of a cable modem tuner is configured to process the additional signal using the feedback bandwidth.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 6, 2020
    Inventors: Nathan Goichberg, Shaul Shulman
  • Publication number: 20200228162
    Abstract: A cable modem system for discovering interference groups (IGs) includes an infrastructure and a cable modem termination system (CMTS). The infrastructure is for transferring data. The CMTS is configured to initiate generation of test signals by a set of cable modems (CMs), obtain a set of test measurements for the set of CMs, discover interference groups (IGs) of the set of CMs based on the obtained set of test measurements and assign a plurality of upstream and downstream channels for the set of CMs that use orthogonal frequency division multiplexing (OFDM) based on the discovered IGs.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: Bernard Arambepola, Thushara Hewavithana, Noam Tal, Shaul Shulman
  • Publication number: 20200204257
    Abstract: A network infrastructure combining data over cable service interface specification (DOCSIS) cable modem management and 10 Gb passive optical network XGPON networking technology. The DOCSIS equipment controls restrict the XGPON to physical layer (layer 1) while the DOCSIS equipment operate at a data link layer and above.
    Type: Application
    Filed: January 10, 2018
    Publication date: June 25, 2020
    Inventors: Gerfried Krampl, Barak Hermesh, Amos Klimker, Shaul Shulman, Franz-Josef Schaefer, Guy Ray
  • Publication number: 20200162230
    Abstract: A cable modem supporting full duplex (FDX) operations. The cable modem includes a transmit circuitry configured to process a transmit signal and a receive circuitry configured to process a receive signal. The receive circuitry includes a switchable analog filter configured to filter the receive signal. The switchable analog filter is configurable for different passband frequencies. The receive circuitry also includes a digital compensation filter configured to compensate a difference in frequency response in a specific frequency band due to switching of the switchable analog filter for a different passband frequency. The cable modem also includes an adjacent channel interference (ACI) cancellation filter and an adjacent leakage interference (ALI) cancellation filter. A digital compensation filter is also used in processing the ACI cancellation signal and the ALI cancellation signal to impose or compensate the difference in frequency response due to the switchable analog filter switching.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 21, 2020
    Applicant: Intel Corporation
    Inventors: Boaz Kol, Noam Tal, Shaul Shulman, Thushara Hewavithana
  • Publication number: 20200119834
    Abstract: Mixed mode constellation mapping to map a data block to a block of sub-carriers based on a configurable set of one or more constellation mapping schemes, and corresponding mixed mode least likelihood ratio (LLR) de-mapping based on the configurable set of one or more modulation schemes. The set may be configurable to include multiple modulation schemes to provide to a SEvSNR measure that is a non-weighted or weighted average of SEvSNR measures of the multiple modulation schemes. Mixed mode constellation mapping may be useful be configurable to control spectral efficiency versus SNR (SEvSNR) over a range of SNR with relatively fine SNR granularity, and may be configurable to control SEvSNR over a range of SNR at a fixed FEC code rate, which may include a highest available or highest permitted code rate.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: Intel Corporation
    Inventors: Bernard Arambepola, Noam Tal, Sahan S. Gamage, Thushara Hewavithana, Shaul Shulman
  • Patent number: 10608745
    Abstract: A system that utilizes data over cable service interface specification (DOCSIS) over passive optical networks is disclosed. An example system includes core system in a passive optical network (PON), comprising a memory; and one or more processors configured to generate a downlink (DL) data stream comprising optical signals, in compliance with a data over cable service interface specification (DOCSIS); and provide the optical signals containing DL data to a network component in the PON over an optical fiber coupled between the core system and the network component. In some embodiments, the core system is located at a head end equipment at the internet service provider's facility. However, in other embodiments, the core system can have a distributed architecture, with a part of the core system located at the internet service provider's facility and a different part of the core system located at a different location.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 31, 2020
    Assignee: Intel Corporation
    Inventors: Shaul Shulman, Guy Ray, Amos Klimker, Avi Priev
  • Publication number: 20200021380
    Abstract: Synchronizing methods and architectures for cable modems to transmit and receive Full Duplex (FDX) resource block allocations (RBAs) using filter switching and coordinated updating of equalization coefficients. A cable modem including a block of switchable filters, an analog front end (AFE) and a PHY/MAC System on a Chip (SoC) tuner to, at least in part, provide signals to switch the switchable filters in accordance with the RBA changes and synchronize updating tuner equalizations to match filter switching in a coordinated manner by marking received data at the AFE.
    Type: Application
    Filed: February 13, 2019
    Publication date: January 16, 2020
    Inventors: Nathan Goichberg, Shaul Shulman, Thushara Hewavithana
  • Patent number: 10491249
    Abstract: A method and apparatus for cancelling self-interference in a cable network implementing full duplex (FDX). A processor in a cable modem may obtain a frequency response of an echo channel for at least one sub-channel in an FDX band and calculate filter coefficients based on the frequency response, and an interference canceller cancels the self-interference in the downstream signal. The interference canceller includes filters in a digital domain to generate an interference cancellation signal from a reference signal. In another example, the processor may obtain frequency responses of an echo channel for all sub-channels in a FDX band, combine the frequency responses for the FDX band, and generate a channel impulse response for the FDX band from the combined frequency response. The interference canceller may then cancel the self-interference in the downstream signal in an analog domain based on the channel impulse response.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: November 26, 2019
    Assignee: Intel Corporation
    Inventors: Thushara Hewavithana, Shaul Shulman, Noam Tal, Boaz Kol, Nathan Goichberg, David Barr