公开(公告)号：US20150156535A1

公开(公告)日：2015-06-04

申请号：US14614543

申请日：2015-02-05

Applicant: MaxLinear, Inc.

Inventor： Madhukar Reddy ,  Curtis Ling ,  Tim Gallagher

IPC: H04N21/426 ,  H04N21/438 ,  H04N21/454 ,  H04N5/50

CPC classification number: H04N21/4263 ,  H04B1/0014 ,  H04N5/455 ,  H04N5/50 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/454 ,  H04N21/6143 ,  H04N21/6193

Abstract: A wideband receiver system comprises a mixer module, a wideband analog-to-digital converter (ADC) module, and digital circuitry. The mixer module is configured to downconvert a plurality of frequencies that comprises a plurality of desired television channels and a plurality of undesired television channels. The wideband ADC module is configured to digitize the swatch of frequencies comprising the plurality of desired television channels and the plurality of undesired television channels. The digital circuitry is configured to select the desired plurality of television channels from the digitized plurality of frequencies, and output the selected plurality of television channels to a demodulator as a digital datastream.

Abstract translation: 宽带接收机系统包括混频器模块，宽带模数转换器（ADC）模块和数字电路。 混频器模块被配置为对包括多个所需电视频道和多个不期望的电视频道的多个频率进行下变频。 宽带ADC模块被配置为数字化包括多个所需电视频道和多个不想要的电视频道的频率的频率。 数字电路被配置为从数字化的多个频率中选择期望的多个电视频道，并且将所选择的多个电视频道作为数字数据流输出到解调器。

公开(公告)号：US20150156444A1

公开(公告)日：2015-06-04

申请号：US14617973

申请日：2015-02-10

Applicant: MaxLinear, Inc.

Inventor： Madhukar Reddy ,  Curtis Ling ,  Tim Gallagher

IPC: H04N5/50 ,  H04N21/61 ,  H04N21/426 ,  H04N21/438

CPC classification number: H04N21/4263 ,  H04B1/0014 ,  H04N5/455 ,  H04N5/50 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/454 ,  H04N21/6143 ,  H04N21/6193

Abstract: A wideband receiver system comprises a wideband analog-to-digital converter (ADC) module and a digital frontend (DFE) module. The wideband ADC is configured to concurrently digitize a band of frequencies comprising a plurality of desired channels and a plurality of undesired channels. The DFE module is coupled to the digital in-phase and quadrature signals. The DFE module is configured to select the plurality of desired channels from the digitized band of frequencies, and generate an intermediate frequency (IF) signal comprising the selected plurality of desired channels and having a bandwidth that is less than a bandwidth of the band of frequencies, where the generation comprises frequency shifting of the selected plurality of desired channels. The IF signal may be a digital signal and the DFE is configured to output the IF signal via a serial or parallel interface.

Abstract translation: 宽带接收机系统包括宽带模数转换器（ADC）模块和数字前端（DFE）模块。 宽带ADC被配置为同时数字化包括多个期望信道和多个不期望信道的频带。 DFE模块耦合到数字同相和正交信号。 DFE模块被配置为从数字化的频带选择多个期望的信道，并且生成包括所选择的多个期望信道并且具有小于频带的带宽的带宽的中频（IF）信号 ，其中所述一代包括所选择的多个期望信道的频移。 IF信号可以是数字信号，并且DFE被配置为经由串行或并行接口输出IF信号。

公开(公告)号：US20150148069A1

公开(公告)日：2015-05-28

申请号：US14565180

申请日：2014-12-09

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling

IPC: H04W4/02 ,  H04N5/225

CPC classification number: H04W4/02 ,  G01C21/20 ,  G01C21/206 ,  G06F17/30241 ,  G06F17/30268 ,  H04N5/225

Abstract: Methods and systems for map generation for location and navigation with user sharing/social networking may comprise a premises-based crowd-sourced database that receives images and location data from a plurality of users of wireless communication devices, and for each of said plurality of users: receiving a determined position of a wireless communication device (WCD), where the position is determined by capturing images of the surroundings of the WCD. Data associated with objects in the surroundings of the WCD may be extracted from the captured images, positions of the objects may be determined, and the determined positions and the data may then update the premises-based crowd-sourced database. The position of the WCD may be determined utilizing global navigation satellite system (GNSS) signals. The elements may comprise structural and/or textual features in the surroundings of the WCD. The position may be determined utilizing sensors that measure a distance from a known position.

Abstract translation: 用于具有用户共享/社交网络的用于位置和导航的地图生成的方法和系统可以包括基于前提的来自人群的数据库，其从多个无线通信设备的用户以及所述多个用户中的每一个接收图像和位置数据 ：接收无线通信设备（WCD）的确定位置，其中通过捕获WCD的周围环境的图像来确定位置。 可以从所捕获的图像中提取与WCD周围的对象相关联的数据，可以确定对象的位置，然后确定的位置和数据可以更新基于前提的基于人群的数据库。 可以使用全球导航卫星系统（GNSS）信号来确定WCD的位置。 元件可以包括WCD周围的结构和/或文本特征。 可以使用测量距离已知位置的距离的传感器来确定位置。

公开(公告)号：US09043855B2

公开(公告)日：2015-05-26

申请号：US13948417

申请日：2013-07-23

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

IPC: H04N7/173 ,  H04B17/00 ,  H04N21/6338 ,  H04N21/61 ,  H04N21/647 ,  H04H60/97 ,  H04H20/78 ,  H03D1/04 ,  H04B1/10 ,  H04H60/32

CPC classification number: H04N21/6338 ,  H04H20/78 ,  H04H60/32 ,  H04H60/97 ,  H04N21/6118 ,  H04N21/6156 ,  H04N21/6168 ,  H04N21/64761 ,  H04N21/64769

Abstract: A coupling device for use in a hybrid fiber coaxial (HFC) network may be configured to disable an upstream path through it when there is only noise incident on the upstream path, and enable the upstream path through it when a desired transmission from a cable modem downstream of the coupling device is incident on the upstream path. The coupling device may be a trunk amplifier, a distribution amplifier, a splitter, or the like. The coupling device may comprise a single upstream interface coupled to a plurality of downstream interfaces. The enabling and/or disabling may be in response to a signal strength indicated by the SSI being below a threshold and/or in response to one or more control messages indicating whether any downstream cable modem is, or will be, transmitting.

Abstract translation: 用于混合光纤同轴（HFC）网络的耦合装置可以被配置为当仅有入射在上游路径上的噪声时禁止通过它的上游路径，并且当来自电缆调制解调器的所需传输时使得能够通过它的上行路径 耦合装置的下游入射在上游路径上。 耦合装置可以是干线放大器，分配放大器，分路器等。 耦合设备可以包括耦合到多个下游接口的单个​​上游接口。 启用和/或禁用可以响应于由SSI指示的信号强度低于阈值和/或响应于指示是否或将要发送的任何下游电缆调制解调器的一个或多个控制消息。

公开(公告)号：US20150110232A1

公开(公告)日：2015-04-23

申请号：US14470720

申请日：2014-08-27

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher

IPC: H04L7/00

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。

公开(公告)号：US09014649B2

公开(公告)日：2015-04-21

申请号：US14230055

申请日：2014-03-31

Applicant: MaxLinear, Inc.

Inventor： Anand K. Anandakumar ,  Curtis Ling ,  Sugbong Kang

IPC: H04B1/16 ,  H04B7/08 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04B7/12 ,  H04L5/00

CPC classification number: H04B7/0845 ,  H04B1/16 ,  H04B7/0857 ,  H04B7/0885 ,  H04B7/12 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/03159 ,  H04L25/14 ,  H04L27/2649 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: A system may comprise a plurality of signal processing paths, a bin-wise combiner, an inverse transformation block, and a DAC. Each signal processing path may comprise a transformation block that is operable to transform a first time-domain digital signal to an associated frequency-domain signal having a plurality of subband signals. The bin-wise combiner may be operable to combine corresponding subband signals of the plurality of signal processing paths. The inverse transformation block may be operable to transform output of the bin-wise combiner to an second time-domain signal. The DAC may be operable to converts the second time-domain signal to a corresponding analog signal.

Abstract translation: 系统可以包括多个信号处理路径，二进制组合器，逆变换块和DAC。 每个信号处理路径可以包括变换块，其可操作以将第一时域数字信号变换为具有多个子带信号的相关联的频域信号。 二进制组合器可以可操作以组合多个信号处理路径的相应子带信号。 逆变换块可以用于将二进制组合器的输出变换为第二时域信号。 DAC可以用于将第二时域信号转换成相应的模拟信号。

公开(公告)号：US20150023237A1

公开(公告)日：2015-01-22

申请号：US14450343

申请日：2014-08-04

Applicant: MaxLinear, Inc.

Inventor： James Qiu ,  Sridhar Ramesh ,  Sheng Ye ,  Curtis Ling

IPC: H04W52/02 ,  H04W88/02

CPC classification number: H04W52/0245 ,  H03G3/20 ,  H04B1/109 ,  H04B17/00 ,  H04L1/20 ,  H04L27/06 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/40

Abstract: A communication receiver which applies signal processing for quantitatively estimating receive signal factors such as communication channel quality, signal characteristics, and overall system received bit error rate (BER) or packet error rate (PER) and which applies a general algorithm for mapping these estimated factors to control receiver performance and minimize power consumption.

Abstract translation: 一种通信接收机，其应用信号处理，用于定量估计诸如通信信道质量，信号特征和总体系统接收误比特率（BER）或分组差错率（PER）的接收信号因子，并且其应用用于映射这些估计因子的通用算法 以控制接收机性能并降低功耗。

公开(公告)号：US20140376673A1

公开(公告)日：2014-12-25

申请号：US14469281

申请日：2014-08-26

Applicant: Maxlinear, Inc.

Inventor： Yangtao Wang ,  Curtis Ling ,  Tim Gallagher

IPC: H04L27/38 ,  H04L27/233

CPC classification number: H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/361 ,  H04L27/366

Abstract: Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling the received RF signal to generate a channel k and its image channel −k at baseband frequencies, and determining average in-phase (I) and quadrature (Q) gain and phase mismatch of the channel k and the image channel −k. A curvature of gain mismatch for the channel k and the image channel −k may be estimate utilizing a blind source separation (BSS) estimation algorithm. The average I and Q gain and phase mismatch of the channel k and the image channel −k may be removed. A residual phase tilt and a residual amplitude tilt of the channel k and the image channel −k (with removed average I and Q gain and phase mismatch) may be determined.

Abstract translation: 用于宽带通信接收机的I / Q失配校准和补偿的方法和系统可以包括在通信设备的接收机中接收射频（RF）信号，对所接收的RF信号进行下采样以产生信道k及其图像信道 - k，并确定通道k和图像通道-k的平均同相（I）和正交（Q）增益和相位失配。 可以使用盲源分离（BSS）估计算法来估计信道k和图像信道-k的增益失配曲率。 可以消除通道k和图像通道-k的平均I和Q增益和相位失配。 可以确定通道k和图像通道-k（具有去除的平均I和Q增益和相位失配）的残余相位倾斜和残余幅度倾斜。

公开(公告)号：US20140348185A1

公开(公告)日：2014-11-27

申请号：US14457100

申请日：2014-08-11

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher

IPC: H04L7/00

CPC classification number: H04L7/0079 ,  G01S19/05 ,  G01S19/235 ,  G01S19/246 ,  H04B1/707

Abstract: Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving a signal that conforms to a data over cable service interface specification (DOCSIS) communications protocol. A global time of day (GTOD) clock may be extracted from the received signal. Communication on the premises-based network in accordance with a multimedia over cable alliance (MoCA) communications protocol may be synchronized based at least in part on the extracted GTOD clock. Communication in a third communications protocol may be synchronized, wherein the third communications protocol may include a home phoneline networking alliance (HPNA) standard, an IEEE 802.11x standard, and a non-public wireless network protocol. The extracted GTOD clock may comprise a GPS clock, GLONASS clock, and a Galileo clock. A second signal for extracting a GTOD may be received, such as a satellite signal, and may conform to a low Earth orbit satellite signal protocol.

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场所的网络中，接收符合数据通过电缆服务接口规范（DOCSIS）通信协议的信号。 可以从接收到的信号中提取全球时间（GTOD）时钟。 至少部分地基于所提取的GTOD时钟，可以根据多媒体跨线联盟（MoCA）通信协议在基于场所的网络上的通信进行同步。 可以同步第三通信协议中的通信，其中第三通信协议可以包括家庭电话网络联盟（HPNA）标准，IEEE 802.11x标准和非公共无线网络协议。 提取的GTOD时钟可以包括GPS时钟，GLONASS时钟和伽利略时钟。 可以接收用于提取GTOD的第二信号，例如卫星信号，并且可以符合低地球轨道卫星信号协议。

公开(公告)号：US20140314070A1

公开(公告)日：2014-10-23

申请号：US14319769

申请日：2014-06-30

Applicant: MAXLINEAR, INC.

Inventor： Curtis Ling ,  Xing Tan ,  Hyungjin Kim

IPC: H04W56/00 ,  G06F1/12

CPC classification number: H04W56/001 ,  G01S19/14 ,  G01S19/235 ,  G06F1/12 ,  H03L1/02 ,  H03L1/026

Abstract: Methods and systems for precise temperature and timebase PPM error estimation using multiple timebases may comprise in an electronic device comprising a plurality of timebases and measuring a temperature corresponding to the timebases. Frequencies of the timebases at the measured temperature may be compared to determine differential error functions for the timebases. A fine reading of the temperature corresponding to the timebases may be generated based, at least in part, on the measured temperature and the determined differential error functions for the timebases. The timebases may be calibrated utilizing the generated fine reading of the temperature. The timebases may comprise different order temperature dependencies. Models of temperature dependencies of each of the timebases based may be updated, at least in part, on the fine reading of the temperature. A global navigation satellite system (GNSS) clock signal may be periodically utilized to improve the accuracy of the calibration of the timebases.

Abstract translation: 用于精确温度和时基的方法和系统使用多个时基的PPM误差估计可以包括在包括多个时基并且测量对应于时基的温度的电子设备中。 可以比较测量温度下时基的频率，以确定时基的差分误差函数。 至少部分地基于所测量的温度和确定的时间基差分误差函数来生成对应于时间基的温度的精细读数。 可以利用生成的温度读数来校准时基。 时间基可以包括不同的顺序温度依赖性。 每个基于时间基的温度依赖性的模型可以至少部分地基于对温度的精细读取来更新。 周期性地使用全球导航卫星系统（GNSS）时钟信号来提高时基的校准精度。