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    Method and system for a high capacity cable network
    31.
    发明授权
    Method and system for a high capacity cable network 有权

    公开(公告)号：US10263801B2

    公开(公告)日：2019-04-16

    申请号：US15903189

    申请日：2018-02-23

    Applicant: Maxlinear, Inc.

    Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

    IPC: H04W24/10 ,  H04L12/28 ,  H04L12/24 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26

    Abstract: A cable modem termination system (CMTS) may communicate with a plurality of cable modems using a plurality of orthogonal frequency division multiplexed (OFDM) subcarriers. The CMTS may determine a performance metric of each of the cable modems. For each of the OFDM subcarriers and each of the cable modems, the CMTS may select physical layer parameters to be used for communication with that cable modem on that OFDM subcarrier based on a performance metric of that cable modem. The parameters may be selected for each individual modem and/or each individual subcarrier, or may be selected for groups of modems and/or groups of subcarriers. The parameters may include, for example, one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate.

    Method and System for Power Management in a Frequency Division Multiplexed Network
    32.
    发明申请
    Method and System for Power Management in a Frequency Division Multiplexed Network 审中-公开

    公开(公告)号：US20190069040A1

    公开(公告)日：2019-02-28

    申请号：US16170365

    申请日：2018-10-25

    Applicant: Maxlinear, Inc.

    Inventor： Curtis Ling ,  Timothy Gallagher ,  Sridhar Ramesh

    IPC: H04N21/6587 ,  H03M3/00 ,  H03M1/12 ,  H03H17/04 ,  H04N21/61 ,  H04N7/10 ,  H04J1/00 ,  H04H20/42 ,  H04N21/222 ,  H04H40/27 ,  H04N21/6373 ,  H04H20/77

    Abstract: A network device may receive a signal from a headend, wherein a bandwidth of the received signal spans from a low frequency to a high frequency and encompasses a plurality of sub-bands. The network device may determine, based on communication with the headend, whether one of more of the sub-bands residing above a threshold frequency are available for carrying downstream data from the headend to the circuitry. The network device may digitize the signal using an ADC operating at a sampling frequency. The sampling frequency may be configured based on a result of the determining. When the sub-band(s) are available for carrying downstream data from the headend to the network device, the sampling frequency may be set to a relatively high frequency. When the sub-band(s) are not available for carrying downstream data from the headend to the network device, the sampling frequency may be set to a relatively low frequency.

    PEAK TO AVERAGE POWER RATIO REDUCTION IN MULTICHANNEL DIGITAL FRONT-ENDS (DFES)
    33.
    发明申请
    PEAK TO AVERAGE POWER RATIO REDUCTION IN MULTICHANNEL DIGITAL FRONT-ENDS (DFES) 审中-公开

    公开(公告)号：US20190058621A1

    公开(公告)日：2019-02-21

    申请号：US16160250

    申请日：2018-10-15

    Applicant: MaxLinear, Inc.

    Inventor： Sridhar Ramesh

    IPC: H04L27/26 ,  H04B1/10 ,  H04B15/00 ,  H03D1/06 ,  H03D3/00

    CPC classification number: H04L27/2621 ,  H03D1/06 ,  H03D3/002 ,  H04B1/1027 ,  H04B15/00 ,  H04L27/2601

    Abstract: Systems and methods are provided for peak to average power ratio (PAPR) reduction in multichannel transmissions. A plurality of frequency-domain symbols may be generated and assigned to a plurality of subcarriers associated with a multichannel transmission. The subcarriers may be assigned to a plurality of channels used for the multichannel transmission, with a number of the channels being different than a number of the subcarriers. A plurality of time-domain signals corresponding to the plurality of channels may be generated, and an adjustment may be applied to at least one time-domain signal, to generate a corresponding adjusted time-domain signal. The adjustment may be configured based on one or more characteristic associated with at least two of the frequency-domain symbols. Handling related information may be communicated form the transmit-side to the receive-side, such as using spare carriers, to enable handling an output corresponding to the plurality of time-domain signals.

    Dynamically calibrated pre-distortion
    36.
    发明授权
    Dynamically calibrated pre-distortion 有权

    公开(公告)号：US09768987B2

    公开(公告)日：2017-09-19

    申请号：US14595896

    申请日：2015-01-13

    Applicant: MaxLinear, Inc.

    Inventor： Sridhar Ramesh ,  Timothy Gallagher ,  Ali Shahed hagh ghadam

    IPC: H04L25/03 ,  H03F1/32 ,  H04L27/36 ,  H04B15/00

    CPC classification number: H04L25/03343 ,  H03F1/3211 ,  H03F1/3241 ,  H04B15/00 ,  H04L27/367

    Abstract: Systems and methods are provided for dynamic calibration of pre-distortion modification in transmitters. The pre-distortion modification may be applied during processing of an input signal for transmission, and feedback data, relating to the transmitter and/or processing performed after application of the pre-distortion modification in the transmitter, may be obtained. Adjustments to the pre-distortion modification may be determined based on the feedback data, and the adjustments to the pre-distortion modification may be applied in loop-back manner, thus enabling adjustment of pre-distortion modification dynamically based on real-time and current data. The pre-distortion modification may comprise modifying one or more signal characteristics, such as phase, frequency, and/or amplitude. Determining and/or applying the adjustments to the pre-distortion modification may be done periodically, based on one or more particular events, or conditionally.

    Method and system for guard band detection and frequency offset detection
    37.
    发明授权
    Method and system for guard band detection and frequency offset detection 有权

    公开(公告)号：US09755728B2

    公开(公告)日：2017-09-05

    申请号：US14711057

    申请日：2015-05-13

    Applicant: MaxLinear, Inc.

    Inventor： Raja Pullela ,  Glenn Chang ,  Sridhar Ramesh

    IPC: H04B7/185 ,  H04L7/033 ,  H04L7/00

    CPC classification number: H04B7/18513 ,  H04L7/0054 ,  H04L7/0331

    Abstract: Methods and systems are provided for guard band detection and/or frequency offset detection. For example, a signal processing circuit may be operable to determine, for each of a plurality of downconverted signals, one or more frequency offsets that are associated with one or more corresponding local oscillators (LOs) used in obtaining the plurality of downconverted signals; and relating to the determined frequency offsets may be generated for the plurality of downconverted signals. The signal processing circuit may perform, based on the generated information, one or both of a band stacking operation and a channel stacking operation so as to prevent channels/bands being stacked on each other or being overlapped.

    ADAPTIVE INTER-FRAME GAP REDUCTION IN MULTIMEDIA OVER COAX ALLIANCE (MOCA) NETWORKS
    38.
    发明申请
    ADAPTIVE INTER-FRAME GAP REDUCTION IN MULTIMEDIA OVER COAX ALLIANCE (MOCA) NETWORKS 审中-公开

    公开(公告)号：US20170222939A1

    公开(公告)日：2017-08-03

    申请号：US15423293

    申请日：2017-02-02

    Applicant: MaxLinear, Inc.

    Inventor： Sridhar Ramesh

    IPC: H04L12/805 ,  H04L12/28

    CPC classification number: H04L47/365 ,  H04L12/2801

    Abstract: Systems and methods are provided for utilizing adaptive inter-frame gap reduction in Multimedia over Coax Alliance (MoCA®) networks. A network node that is configured as network controller within a Multimedia over Coax Alliance (MoCA®) network may receive communication timing related information associated with each of a plurality of network nodes in the MoCA network; assess based on the communication timing related information, communication timing for each pair of network nodes in the plurality of network nodes; and adaptively configure communications between each pair of network nodes in the plurality of network nodes based on the assessing. The configuring may comprise adjusting timing related parameters or fields in packets. The timing related parameters or fields may comprise inter-frame gap (IFG) fields in physical layer (PHY) packets. The communication timing related information may comprise ranging information or ranging-based timing information determined based on the ranging information.

    Flexible channel stacking
    40.
    发明授权
    Flexible channel stacking 有权

    公开(公告)号：US09668018B2

    公开(公告)日：2017-05-30

    申请号：US15006337

    申请日：2016-01-26

    Applicant: MaxLinear, Inc

    Inventor： Sridhar Ramesh ,  Curtis Ling ,  Jingnong Yang

    IPC: H04N7/10 ,  H04H40/90 ,  H04H20/63 ,  H04N21/438 ,  H04N21/2385 ,  H04N21/61

    CPC classification number: H04N21/4383 ,  H04H20/63 ,  H04H40/90 ,  H04N7/106 ,  H04N21/2385 ,  H04N21/615

    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.

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