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    Method and system for crest factor reduction
    121.
    发明授权
    Method and system for crest factor reduction 有权
    波峰因数降低的方法和系统

    公开(公告)号：US09331725B2

    公开(公告)日：2016-05-03

    申请号：US14589801

    申请日：2015-01-05

    Applicant: Maxlinear, Inc.

    Inventor： Ramesh Sridhar ,  Timothy Gallagher ,  Ali Shahed hagh Ghadam ,  Shantha Murthy Prem Swaroop

    IPC: H04L25/03 ,  H04B1/04 ,  H03G3/30 ,  H03F1/32 ,  H03F3/195 ,  H03F3/24

    CPC classification number: H04B1/0475 ,  H03F1/02 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/195 ,  H03F3/213 ,  H03F3/24 ,  H03F2200/451 ,  H03F2201/3215 ,  H03G3/3042 ,  H04B2001/0425 ,  H04B2001/045

    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, generating a conditioned waveform by adding the error signal to the original waveform, and amplifying the conditioned 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. The error signal may be filtered utilizing a distortion shaping filter.

    Abstract translation: 用于波峰因数降低的方法和系统可以包括产生原始波形，通过减小原始波形的波峰因数产生失真信号，通过从失真信号中减去原始波形产生误差信号，通过将 误差信号到原始波形，并放大调节波形。 可以基于光谱掩模要求来减小原始波形的波峰因数。 原始波形的波峰因数可以使用限幅器来减小。 功率放大器可以包括可编程增益放大器（PGA）。 可以基于PGA模型和/或预失真模型来生成失真信号。 来自PA的输出的信号可以被反馈到PGA模型。 PGA模型可以动态配置。 在模拟域和/或数字域中，原始波形的波峰因数可能会降低。 可以使用失真整形滤波器对误差信号进行滤波。

    METHOD AND APPARATUS FOR SPECTRUM MONITORING
    122.
    发明申请
    METHOD AND APPARATUS FOR SPECTRUM MONITORING 有权
    用于光谱监测的方法和装置

    公开(公告)号：US20160087865A1

    公开(公告)日：2016-03-24

    申请号：US14948947

    申请日：2015-11-23

    Applicant: MaxLinear, Inc.

    Inventor： Timothy Gallagher ,  Patrick Tierney ,  Jun Huang

    IPC: H04L12/26 ,  H04B17/309

    CPC classification number: H04L43/08 ,  H04B17/309 ,  H04L12/66 ,  H04N17/00

    Abstract: A receiver is configured to be coupled to a television and data service provider headend via a hybrid fiber coaxial (HFC) network. The receiver comprises front-end circuitry operable to receive a signal that carries a plurality of television and/or data channels, and digitize the received signal to generate a digitized signal. The receiver comprises channelizer circuitry operable to select a first portion of the digitized signal, and select a second portion of the digitized signal. The receiver comprises processing circuitry operable to process the selected second portion of the digitized signal to recover information carried in the plurality of channels. The receiver comprises monitoring circuitry operable to analyze the selected first portion of the digitized signal to measure a characteristic of the received signal; and control the transmission of network management messages back to the headend based on the measured characteristic of the received signal.

    Abstract translation: 接收机被配置为经由混合光纤同轴（HFC）网络耦合到电视和数据服务提供商头端。 该接收机包括可操作以接收携带多个电视和/或数据信道的信号的前端电路，并且数字化接收到的信号以产生数字化信号。 接收机包括可操作以选择数字化信号的第一部分并且选择数字化信号的第二部分的信道转换器电路。 接收机包括处理电路，其可操作以处理数字化信号的所选择的第二部分，以恢复在多个信道中携带的信息。 所述接收机包括可操作以分析所述数字化信号的所选择的第一部分以测量接收信号的特性的监视电路; 并且基于所测量的接收信号的特性来控制网络管理消息的传输回到头端。

    Method And System For Interference Avoidance In A Multi-Protocol Communication System
    124.
    发明申请
    Method And System For Interference Avoidance In A Multi-Protocol Communication System 审中-公开
    多协议通信系统中避免干扰的方法和系统

    公开(公告)号：US20160072600A1

    公开(公告)日：2016-03-10

    申请号：US14944573

    申请日：2015-11-18

    Applicant: Maxlinear, Inc.

    Inventor： Timothy Gallagher ,  Madhukar Reddy

    IPC: H04J1/12 ,  H04N21/61 ,  H04B3/32

    CPC classification number: H04J1/12 ,  H04B3/32 ,  H04L5/0005 ,  H04L5/0046 ,  H04L5/0062 ,  H04N7/106 ,  H04N21/6118 ,  H04N21/6168

    Abstract: Methods and systems for interference avoidance in a multi-protocol communication system may comprise receiving signals in a first communications protocol in a first frequency range and preventing interference signals from being generated in said first frequency range by configuring channel usage in a second communications protocol in a second frequency range based on said received signals. The configuring channel usage may include avoiding communicating in taboo channels and the received signals in said first communications protocol and signals in said configured channels in said second communications protocol may be communicated over one or more coaxial cables based on the configured channel usage. The taboo channels may be selected based on said received signals such that interference signals from said second frequency range do not occur in said first frequency range. The first frequency range comprises a cable or satellite television frequency range, or data over cable service interface standard (DOCSIS).

    Abstract translation: 在多协议通信系统中用于防止干扰的方法和系统可以包括在第一频率范围内以第一通信协议接收信号，并且通过在第二通信协议中配置信道使用来防止在所述第一频率范围内产生干扰信号 基于所述接收信号的第二频率范围。 配置信道使用可以包括避免禁止通道中的通信，并且所述第一通信协议中的接收信号和所述第二通信协议中的所配置的信道中的信号可以基于所配置的信道使用通过一根或多根同轴电缆进行通信。 可以基于所述接收到的信号来选择禁忌信道，使得来自所述第二频率范围的干扰信号不会在所述第一频率范围内发生。 第一个频率范围包括有线或卫星电视频率范围或数据通过电缆服务接口标准（DOCSIS）。

    Method and system for providing a home cable network
    125.
    发明授权
    Method and system for providing a home cable network 有权
    提供家庭有线网络的方法和系统

    公开(公告)号：US09264742B2

    公开(公告)日：2016-02-16

    申请号：US14815702

    申请日：2015-07-31

    Applicant: Maxlinear, Inc.

    Inventor： Curtis Ling ,  Timothy Gallagher

    IPC: H04N7/20 ,  H04N21/214 ,  H04N21/61 ,  H04N21/2381

    CPC classification number: H04N21/4363 ,  H04N7/106 ,  H04N21/2143 ,  H04N21/2381 ,  H04N21/6143 ,  H04N21/6168

    Abstract: Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving, by a network controller in the premises, signals that conform to a first communications protocol. The received signals may be bridged to conform to a second communications protocol different from the first communications protocol, and the bridged signals may be communicated to networked devices within the network, where only signals conforming to the second communications protocol may be concurrently communicated over the network in a frequency range of the first communications protocol and in a frequency range of the second communications protocol, the frequency range used by the first communications protocol not overlapping with the frequency range used by the second communications protocol. The first communications protocol signals may comprise data over cable service interface specification (DOCSIS) signals, cable, and/or or satellite television signals.

    Abstract translation: 用于交叉协议时间同步的方法和系统可以包括例如在基于房屋的网络中，由房屋中的网络控制器接收符合第一通信协议的信号。 接收到的信号可以被桥接以符合与第一通信协议不同的第二通信协议，并且桥接信号可以被传送到网络内的网络设备，其中只有符合第二通信协议的信号可以通过网络同时传送 在第一通信协议的频率范围内和在第二通信协议的频率范围内，第一通信协议使用的频率范围与第二通信协议使用的频率范围不重叠。 第一通信协议信号可以包括通过有线服务接口规范（DOCSIS）信号，电缆和/或卫星电视信号的数据。

    Configurable, highly-integrated satellite receiver
    128.
    发明授权
    Configurable, highly-integrated satellite receiver 有权
    可配置，高度集成的卫星接收机

    公开(公告)号：US09203535B2

    公开(公告)日：2015-12-01

    申请号：US13783130

    申请日：2013-03-01

    Applicant: MaxLinear, Inc.

    Inventor： Glenn Chang ,  Raja Pullela ,  Madhukar Reddy ,  Timothy Gallagher ,  Shanta Murthy Prem Swaroop ,  Curtis Ling ,  Vamsi Paidi ,  Wenjian Chen

    IPC: H04H40/90

    CPC classification number: H04H40/90 ,  H04N21/6143

    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.

    Abstract translation: 直接广播卫星（DBS）接收组件可以包括可以基于由DBS接收组件服务的客户端设备请求的内容在多个配置之间或之间配置的集成电路。 在第一配置中，多个卫星频带可以被集成电路数字化为单个宽带信号。 在第二配置中，卫星频带可以由集成电路数字化为多个单独的窄带信号。 集成电路可以包括多个接收路径，每个接收链包括多个低噪声放大器和多个模数转换器中的相应一个。

    Using decision feedback phase error correction
    129.
    发明授权
    Using decision feedback phase error correction 有权
    使用判决反馈相位误差校正

    公开(公告)号：US09191183B2

    公开(公告)日：2015-11-17

    申请号：US14470720

    申请日：2014-08-27

    Applicant: MaxLinear, Inc.

    Inventor： Curtis Ling ,  Timothy Gallagher

    IPC: H04L25/40 ,  H04L7/00 ,  H04L7/033 ,  H04B7/06

    CPC classification number: H04L7/0016 ,  H04B7/061 ,  H04L5/0098 ,  H04L7/033 ,  H04L25/0206 ,  H04L25/03057 ,  H04L27/2601 ,  H04L27/2657 ,  H04L27/2679

    Abstract: Methods and systems are provided for using decision feedback phase error correction during signal processing. When an input signal comprises a plurality of sub-carriers, each of the plurality of sub-carriers may be processed separately, wherein the processing may comprise determining for each one of the plurality sub-carriers error related information; and the determined error related information may be applied as separate feedback, such as to allow separately adjusting subsequent processing of the corresponding one of the plurality of sub-carriers. The error related information may comprise phase error related information. At least part of the error related information based on data carried by the corresponding one of the plurality of sub-carriers. The plurality of sub-carriers comprises orthogonal frequency-division multiplexing (OFDM) based sub-carriers. Error related information obtained from processing of at least some of the plurality of sub-carriers may be shared.

    Abstract translation: 提供了在信号处理期间使用判定反馈相位误差校正的方法和系统。 当输入信号包括多个子载波时，可以分开处理多个子载波中的每一个，其中该处理可以包括确定多个子载波中的每一个与错误相关的信息; 并且所确定的错误相关信息可以被应用为单独的反馈，诸如允许单独调整多个子载波中的相应一个子载波的后续处理。 错误相关信息可以包括相位误差相关信息。 基于由所述多个子载波中的相应一个子载波承载的数据的所述错误相关信息的至少一部分。 多个子载波包括基于正交频分复用（OFDM）的子载波。 可以共享从处理多个子载体中的至少一些子载波获得的错误相关信息。

    Method and system for a high capacity cable network
    130.
    发明授权
    Method and system for a high capacity cable network 有权
    高容量有线网络的方法和系统

    公开(公告)号：US09178765B2

    公开(公告)日：2015-11-03

    申请号：US13948401

    申请日：2013-07-23

    Applicant: MaxLinear, Inc.

    Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

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

    CPC classification number: H04L12/2801 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/001 ,  H04L5/0046 ,  H04L5/006 ,  H04L12/2898 ,  H04L27/2646 ,  H04L41/083

    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.

    Abstract translation: 电缆调制解调器终端系统（CMTS）可以使用多个正交频分复用（OFDM）子载波与多个电缆调制解调器进行通信。 CMTS可以确定每个有线调制解调器的性能度量。 对于每个OFDM子载波和每个电缆调制解调器，CMTS可以基于该电缆调制解调器的性能度量来选择要用于与该OFDM子载波上的该电缆调制解调器通信的物理层参数。 可以为每个单独的调制解调器和/或每个单独的子载波选择参数，或者可以针对调制解调器和/或子载波组的组选择参数。 参数可以包括例如以下中的一个或多个：发射功率，接收灵敏度，时隙持续时间，调制类型，调制阶数，前向纠错（FEC）类型和FEC码率。

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