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    FREQUENCY SPREADING FOR HIGH-PERFORMANCE COMMUNICATIONS
    1.
    发明申请
    FREQUENCY SPREADING FOR HIGH-PERFORMANCE COMMUNICATIONS 有权

    公开(公告)号：US20220286245A1

    公开(公告)日：2022-09-08

    申请号：US17664840

    申请日：2022-05-24

    Applicant: MAXLINEAR, INC.

    Inventor： Sridhar Ramesh ,  Curtis Ling ,  Xing Tan

    IPC: H04L5/00

    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.

    Methods and systems for utilizing low gain low noise signal amplification and ideal taps in coaxial networks
    3.
    发明授权
    Methods and systems for utilizing low gain low noise signal amplification and ideal taps in coaxial networks 有权

    公开(公告)号：US10608700B2

    公开(公告)日：2020-03-31

    申请号：US16128213

    申请日：2018-09-11

    Applicant: MaxLinear, Inc.

    Inventor： Steven John Krapp ,  Sridhar Ramesh

    IPC: H04L25/00 ,  H04B3/23 ,  H04L5/14 ,  H04L25/03

    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.

    Full-Duplex Cable Modem Calibration
    4.
    发明申请
    Full-Duplex Cable Modem Calibration 审中-公开

    公开(公告)号：US20190268037A1

    公开(公告)日：2019-08-29

    申请号：US16272345

    申请日：2019-02-11

    Applicant: Maxlinear, Inc.

    Inventor： Sridhar Ramesh

    IPC: H04B3/23 ,  H04L12/28 ,  H04L5/14

    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.

    Advanced fiber node
    5.
    发明授权
    Advanced fiber node 有权

    公开(公告)号：US10271118B2

    公开(公告)日：2019-04-23

    申请号：US15885871

    申请日：2018-02-01

    Applicant: Maxlinear, Inc

    Inventor： Sridhar Ramesh ,  Curtis Ling

    IPC: H04B10/27 ,  H04Q11/00 ,  H04B10/40 ,  H04B10/2575

    Abstract: Circuitry of a hybrid fiber-coaxial network may comprise a first transceiver configured to connect the circuitry to an optical link, a second transceiver configured to connect the circuitry to an electrical link, a first processing path, a second processing path, and a switching circuit. In a first configuration, the switching circuit may couple the first transceiver to the second transceiver via the first processing path. In a second configuration, the switching circuit may couple the first transceiver to the second transceiver via the second processing path. The first transceiver may comprise a passive optical network (PON) transceiver and the second transceiver may comprise a data over coaxial service interface specification (DOCSIS) physical layer transceiver. The switching circuit may be configured based on the type of headend to which the circuitry is connected.

    Method And System For Service Group Management In A Cable Network
    6.
    发明申请
    Method And System For Service Group Management In A Cable Network 审中-公开

    公开(公告)号：US20190089593A1

    公开(公告)日：2019-03-21

    申请号：US16195053

    申请日：2018-11-19

    Applicant: Maxlinear, inc.

    Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

    IPC: H04L12/24 ,  H04L1/00 ,  H04L12/26 ,  H04L27/26 ,  H04B17/318 ,  H04L12/28

    Abstract: A cable modem termination system (CMTS) may determine, for a cable modem served by the CMTS, a SNR-related metric. The CMTS may assign the modem among a plurality of service groups based on the SNR-related metric. The CMTS may configure physical layer communication parameters to be used by the modem based on a SNR-related metric of a service group to which the modem is assigned. The physical layer communication parameters may include one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate. The CMTS and the modem may communicate using orthogonal frequency division multiplexing (OFDM) over a plurality of subcarriers, and the physical layer communication parameters may be determined on a per-subcarrier basis.

    Peak to average power ratio reduction in multichannel digital front-ends (DFES)
    7.
    发明授权
    Peak to average power ratio reduction in multichannel digital front-ends (DFES) 有权

    公开(公告)号：US10103917B2

    公开(公告)日：2018-10-16

    申请号：US15425115

    申请日：2017-02-06

    Applicant: MaxLinear, Inc.

    Inventor： Sridhar Ramesh

    IPC: H03D1/04 ,  H03K5/01 ,  H04B1/10 ,  H04L25/08 ,  H04L27/26 ,  H03D3/00 ,  H04B15/00 ,  H03D1/06

    Abstract: Systems and methods are provided for peak to average power ratio (PAPR) reduction in multichannel digital front-ends (DFEs). A transmitter may be configured to reduce PAPR during multichannel transmission, with the reducing comprising: generating a plurality of frequency-domain symbols, each of which corresponding to a particular one of a plurality of subcarriers; assigning the subcarriers to a plurality of channels, wherein a number of channels is less than a number of subcarriers; and generating a plurality of time-domain signals corresponding to the channels. An adjustment to reduce PAPR may be applied to at least one of the time-domain signals, with the adjustment being based on symbols boundaries. The adjustment may comprise sign inversion. Adjusted and unadjusted waveforms may be generated for two or more of the time-domain signals; and selection may be made between generated adjusted waveforms based on particular criteria. The criteria may comprise lowest peak.

    FLEXIBLE CHANNEL STACKING
    8.
    发明申请
    FLEXIBLE CHANNEL STACKING 审中-公开

    公开(公告)号：US20180288475A9

    公开(公告)日：2018-10-04

    申请号：US15582793

    申请日：2017-05-01

    Applicant: Maxlinear, Inc

    Inventor： Sridhar Ramesh ,  Curtis Ling ,  Jingnong Yang

    IPC: H04N21/438 ,  H04H40/90 ,  H04N21/2385 ,  H04N21/61

    Abstract: A receiver includes a plurality of input paths for receiving and processing a plurality of input RF signals. The input paths isolate one or more portions of corresponding ones of the received input RF signals, and combine the isolated portions of the corresponding ones of the received input RF signals onto one or more output signals. A bandwidth of the isolated portions of the corresponding ones of the received input RF signals and a bandwidth of the output signals are variable. The isolated portions of the corresponding ones of the received plurality of input RF signals are extracted and utilized to generate the output signals. The portions of the corresponding ones of the received plurality of input RF signals may be mapped into one or more channel slots in the time domain. The channel slots may be assigned in the frequency domain to one or more frequency bins.

    Bandwidth allocation for shared network infrastructure
    9.
    发明授权
    Bandwidth allocation for shared network infrastructure 有权

    公开(公告)号：US10057128B2

    公开(公告)日：2018-08-21

    申请号：US14245532

    申请日：2014-04-04

    Applicant: MaxLinear, Inc.

    Inventor： Sridhar Ramesh ,  Curtis Ling ,  Glenn Chang

    IPC: G06F15/173 ,  H04L12/24

    CPC classification number: H04L41/0896 ,  H04L41/12

    Abstract: Methods and systems are provided for adaptive management of local networks (e.g., in-premises networks, which may access or be connected to cable or satellite networks). A network device (e.g., a gateway device) may be configured to function as a network manager in a local network, to manage internal connections and/or communications within the local network. The managing may comprise assessing effects of the internal connections and/or communications on external connections and/or communications with one or more devices and/or networks external the local network; and setting and/or adjusting based on the assessed effects, one or more communication parameters associated with each one of the internal connections and/or communications. The effects of the internal connections and/or communications may result from utilizing one or more physical mediums that are shared with and/or are commonly used by the external connections and/or communications with one or more devices and/or networks external the local network.

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