公开(公告)号：US20150156558A1

公开(公告)日：2015-06-04

申请号：US14616397

申请日：2015-02-06

Applicant: MaxLinear, Inc.

Inventor： Anand Anandakumar ,  Ioannis Spyropoulos ,  Meetul Parikh

IPC: H04N21/647 ,  H04N21/442 ,  H04N21/61 ,  H04N21/438

CPC classification number: H04N21/64738 ,  H04N21/438 ,  H04N21/44209 ,  H04N21/6143

Abstract: A signal receiver may be configured to determine when signal generation adjustments directed to particular components of signals received by the signal receiver, cause performance changes relating to effects of the signal generation adjustments on other components of the received signals. Operations of the signal receiver may then be controlled based on the performance changes, to mitigate at least some of the effects on the one or more other components of the signals. The performance changes may comprise amplitude glitches, phase glitches, and/or bit or packet errors. The signal generation adjustments may comprise channel-to-frequency re-assignment. Controlling operations of the signal receiver may comprise adjusting such parameters as amplification gain and/or tracking loop bandwidth, and/or determining whether (or not) to ignore bit/packet errors.

Abstract translation: 信号接收机可以被配置为确定何时针对由信号接收机接收到的信号的特定分量的信号产生调整导致与信号生成调整对接收信号的其他分量的影响有关的性能改变。 然后可以基于性能变化来控制信号接收机的操作，以减轻对信号的一个或多个其它组件的至少一些影响。 性能变化可能包括幅度毛刺，相位毛刺和/或位或数据包错误。 信号产生调整可以包括频率到频率的重新分配。 信号接收机的控制操作可以包括调整诸如放大增益和/或跟踪环路带宽之类的参数，和/或确定是否（或不））忽略比特/分组错误。

公开(公告)号：US20140218235A1

公开(公告)日：2014-08-07

申请号：US13962876

申请日：2013-08-08

Applicant: MaxLinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Anand K. Anandakumar ,  Curtis Ling

IPC: G01S19/34

CPC classification number: G01S19/34

Abstract: A GNSS system operates intermittently and has adaptive activity and sleep time in order to reduce power consumption. The GNSS system provides an enhanced estimate of its position in the absence of GNSS signals of sufficient strength. The user's activity and behavior is modeled and used to improve performance, response time, and power consumption of the GNSS system. The user model is based, in part, on the received GNSS signals, a history of the user's positions, velocity, time, and inputs from other sensors disposed in the GNSS system, as well as data related to the network. During each activity time, the GNSS receiver performs either tracking, or acquisition followed by tracking The GNSS receiver supports both normal acquisition as well as low-power acquisition.

Abstract translation: GNSS系统间歇运行，具有自适应活动和休眠时间，以降低功耗。 在没有足够强度的GNSS信号的情况下，GNSS系统提供对其位置的增强估计。 用户的活动和行为被建模并用于提高GNSS系统的性能，响应时间和功耗。 用户模型部分地基于所接收的GNSS信号，用户位置的历史，速度，时间以及设置在GNSS系统中的其他传感器的输入以及与网络有关的数据。 在每个活动时间内，GNSS接收机执行跟踪或采集跟踪跟踪。GNSS接收机支持正常采集以及低功耗采集。

公开(公告)号：US10764078B2

公开(公告)日：2020-09-01

申请号：US16356077

申请日：2019-03-18

Applicant: Maxlinear, Inc.

Inventor： Mario Milicevic ,  Ioannis Spyropoulos

IPC: H04L12/28 ,  H03F3/24 ,  H03F1/32 ,  H04B1/10

Abstract: A transmitter is configured to generate a DOCSIS signal for transmission onto a frequency-selective coaxial cable. The transmitter comprises a first reverse tilt filter circuit, a digital predistortion circuit, a forward tilt filter, a wideband equalizer, a second reverse tilt filter, and a power amplifier. The responses of the tilt filters may be set based on the frequency response of the frequency-selective coaxial cable to which the transmitter is intended to be coupled. The predistortion circuit may compensate for distortion introduced by circuitry of the transmitter. The equalizer circuit may be operable to compensate for undesired linear response of other circuitry of the transmitter.

公开(公告)号：US10116469B2

公开(公告)日：2018-10-30

申请号：US15839905

申请日：2017-12-13

Applicant: Maxlinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04L25/03 ,  H04B1/16

Abstract: An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

公开(公告)号：US10116390B2

公开(公告)日：2018-10-30

申请号：US15185487

申请日：2016-06-17

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Anand Anandakumar ,  Ioannis Spyropoulos

IPC: H04B10/04 ,  H04B10/40 ,  H04B10/516 ,  H04B10/58 ,  H04B10/69 ,  H04B10/2507 ,  H04B10/079

Abstract: Aspects of a method and system for feedback during optical communications are provided. In one embodiment, a system for optical communications comprises a predistortion module, a feedback subsystem, a transmit optical subsystem, and an external modulator. The predistortion module is operable to receive an input digital signal and modify the input digital signal to produce a digital predistorted signal. The transmit optical subsystem is operable to generate an optical signal from the digital predistorted signal. The modification of the input digital signal is dynamically controlled by the feedback subsystem according to one or more characteristics of the optical signal as determined by the feedback subsystem. The amplitude of the external modulator output is also dynamically controlled by the feedback subsystem.

公开(公告)号：US09876658B2

公开(公告)日：2018-01-23

申请号：US15392421

申请日：2016-12-28

Applicant: Maxlinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04L25/03 ,  H04B1/16

CPC classification number: H04L25/03184 ,  H04B1/16

Abstract: An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

公开(公告)号：US09246718B2

公开(公告)日：2016-01-26

申请号：US14602837

申请日：2015-01-22

Applicant: MaxLinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04L25/03

CPC classification number: H04L25/03184 ,  H04B1/16

Abstract: An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

Abstract translation: 电子接收机可以基于接收到的符号序列并基于接收符号序列的m符号延迟版本来生成差分检测序列，其中m是大于1的整数。特定的差分检测序列可以是 特定接收符号序列的逐个元素乘法和特定接收符号序列的m符号延迟版本的共轭。 接收机可以基于差分检测序列并且基于从该组可能发送的符号序列生成的一组差分符号序列来计算差分决策度量。 接收机可以产生关于一组可能的传输符号序列中的哪一个导致接收到的符号序列的决定，其中该决定基于差分决策度量和可能发送的符号序列的集合。

公开(公告)号：US09191778B2

公开(公告)日：2015-11-17

申请号：US14284606

申请日：2014-05-22

Applicant: Maxlinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar

IPC: H04W24/00 ,  H04W4/02 ,  G01S5/02 ,  H04W64/00 ,  H04W4/00 ,  H04M1/725

CPC classification number: H04W4/04 ,  G01S5/02 ,  G01S19/01 ,  G06Q20/202 ,  H04M1/72572 ,  H04W4/02 ,  H04W4/50 ,  H04W64/006 ,  H04W76/10 ,  H04W84/12

Abstract: Methods and systems for global positioning navigate satellite system configuration of wireless communication applications may comprise in a wireless communication device (WCD) comprising a satellite positioning RF path, determining a location of the WCD utilizing LEO signals received by said satellite positioning RF path, establishing communications with a wireless access point based on the determined location, and configuring a wireless communication function of the WCD based on the determined location. The wireless communication function may comprise a power level of wireless local area network circuitry in the WCD, a point-of-sale transaction, or a synchronization of data on the WCD with one or more devices in a home location of the WCD. The determined location and a transaction ID for the point-of-sale transaction may be stored utilizing a security processor in the WCD. The satellite positioning RF path may be powered down based on the determined location.

Abstract translation: 用于全球定位的方法和系统导航无线通信应用的卫星系统配置可以包括在包括卫星定位RF路径的无线通信设备（WCD）中，利用由所述卫星定位RF路径接收的LEO信号来确定WCD的位置，建立通信 基于所确定的位置的无线接入点，以及基于所确定的位置来配置所述WCD的无线通信功能。 无线通信功能可以包括WCD中的无线局域网电路的功率电平，销售点交易或WCD上的数据与WCD的家庭位置中的一个或多个设备的同步。 可以使用WCD中的安全处理器来存储确定的销售点交易的位置和交易ID。 卫星定位RF路径可以基于确定的位置被关闭。

公开(公告)号：US20230412276A1

公开(公告)日：2023-12-21

申请号：US18358912

申请日：2023-07-25

Applicant: Maxlinear, Inc.

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar

IPC: H04B10/564

CPC classification number: H04B10/564

Abstract: A calibration system comprises control circuitry and waveform capture circuitry. The control circuitry selects a first calibration waveform for input to a digital predistortion circuit of a transmitter. The capture circuitry captures a first waveform output by the transmitter in response to the first calibration waveform. The control circuitry compares the first calibration waveform to the captured first waveform. The control circuitry selects a first one of a plurality of mapping circuit configurations based on the result of the comparison, wherein the mapping circuit is configured to map outputs of a plurality of delay circuits among inputs of a plurality of filter taps. The control circuitry stores the one of the mapping circuit configurations in nonvolatile memory associated with the transmitter.

公开(公告)号：US20230327922A1

公开(公告)日：2023-10-12

申请号：US18299647

申请日：2023-04-12

Applicant: MAXLINEAR, INC.

Inventor： Sridhar Ramesh ,  Ioannis Spyropoulos

IPC: H04L25/03

CPC classification number: H04L25/03057

Abstract: According to an aspect of an embodiment, a decision feedback equalizer (DFE) may be configured for noise suppression slicing. The DFE may be configured to receive, from a feedforward equalizer, an output signal having a received (Rx) symbol. The DFE may be configured to initialize noise suppression slicer (NSS) parameters including one or more initial NSS coefficients and one or more initial slicer deferred decision (SDD) threshold offsets. The DFE may be configured to determine one or more updated NSS coefficients. The DFE may be configured to determine one or more updated SDD threshold offsets. The DFE may be configured to update the NSS parameters of a processing register based on the one or more updated NSS coefficients and the one or more updated SDD threshold offsets.