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.

公开(公告)号：US10218459B2

公开(公告)日：2019-02-26

申请号：US15584198

申请日：2017-05-02

Applicant: Maxlinear, Inc.

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L27/28 ,  H04L1/00 ,  H04L27/26 ,  H04L25/02 ,  H04L7/00 ,  H04L5/00

Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

公开(公告)号：US10211868B2

公开(公告)日：2019-02-19

申请号：US14918793

申请日：2015-10-21

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sheng Ye

IPC: H04B1/30 ,  H04B1/00 ,  H03F3/24 ,  H04B1/04

Abstract: A transceiver comprises local oscillator circuitry, phase noise determination circuitry, mixing circuitry, and digital signal processing circuitry. The local oscillator circuitry is operable to generate a local oscillator signal. The phase noise determination circuitry is operable to introduce a frequency-dependent phase shift to the local oscillator signal to generate a phase-shifted version of the local oscillator signal. The mixing circuitry is operable to mix the local oscillator signal and the phase-shifted version of the local oscillator to generate a baseband signal having an amplitude proportional to a phase difference between the local oscillator signal and the phase-shifted version of the local oscillator signal. The digital signal processing circuitry is operable to process the baseband signal to determine a phase error of the local oscillator signal, and perform signal compensation based on the determined phase error.

公开(公告)号：US20190028908A1

公开(公告)日：2019-01-24

申请号：US16109530

申请日：2018-08-22

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling

IPC: H04W24/02 ,  H04W72/08 ,  H04B7/155 ,  H04L5/00 ,  H04W24/08 ,  H04W88/08 ,  H04W92/12

Abstract: A communications network comprises performance determination circuitry and link control circuitry. The performance determination circuitry is operable to determine performance of a microwave backhaul link between a first microwave backhaul transceiver and a second microwave backhaul transceiver. The microwave backhaul link backhauls traffic of a mobile access link. The link control circuitry is operable to, in response to an indication from the performance determination circuitry that the performance of the microwave backhaul link has degraded, adjust one or more signaling parameters used for the mobile access link. The link control circuitry is operable to, in response to the indication that the performance of the microwave backhaul link has degraded, adjust one or more signaling parameters used for the backhaul link in combination with the adjustment of the parameter(s) of the access link.

公开(公告)号：US20190013874A1

公开(公告)日：2019-01-10

申请号：US16127686

申请日：2018-09-11

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling

IPC: H04B10/564 ,  H04B10/079 ,  H04B10/40

CPC classification number: H04B10/564 ,  H04B10/07955 ,  H04B10/40

Abstract: Aspects of a method and system for high-speed, low-power optical communications are provided. In one embodiment, a system for optical communications comprises a digital-to-analog converter (DAC), a driver, and a transmit optical subsystem. The DAC is operable to receive a digital code of a plurality of digital codes and output an analog current signal having an analog current level of a plurality of analog current levels. The driver is operable to condition the analog current signal output from the digital-to-analog converter. The transmit optical subsystem is operable to generate an optical power signal from the conditioned analog current signal. A mapping between the plurality of digital codes and the plurality of analog current levels is dynamically controlled according to one or more characteristics of the optical power signal. The one or more characteristics comprise or a symbol amplitude sensitivity and/or a nonlinearity that may be temperature dependent.

公开(公告)号：US10178441B2

公开(公告)日：2019-01-08

申请号：US15661345

申请日：2017-07-27

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher ,  Sridhar Ramesh

IPC: H04N7/16 ,  H04N21/6587 ,  H04N21/61 ,  H03M1/12 ,  H03H17/04 ,  H03M3/00 ,  H04J1/00 ,  H04N7/10 ,  H04H20/42 ,  H04H20/77 ,  H04H40/27 ,  H04N21/222 ,  H04N21/6373

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.

公开(公告)号：US10148417B2

公开(公告)日：2018-12-04

申请号：US15185429

申请日：2016-06-17

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sheng Ye

IPC: H03M13/00 ,  H04L7/00 ,  H04L1/00

Abstract: A method and system for duty-cycled high speed clock and data recovery with forward error correction are provided. The system operates on a first digital signal comprising a first plurality of samples and a second digital signal comprising a second plurality of samples. The second plurality of samples may be a subset of the first plurality of samples, for example, if the first and second pluralities of samples are generated by one analog-to-digital converter. A clock and data recovery module is operable to produce a timing indication according the second digital signal. The second plurality of samples is sampled intermittently. The discontinuity between bursts of samples in the second signal corresponds to a duty cycle. A forward error correction module is operable to produce a digital error-corrected signal according to the first digital signal and the timing indication.

公开(公告)号：US10142142B2

公开(公告)日：2018-11-27

申请号：US15478898

申请日：2017-04-04

Applicant: Maxlinear, Inc.

Inventor： Stephane Laurent-Michel ,  Curtis Ling

IPC: H04L25/08 ,  H04L27/12 ,  H04L5/00 ,  H04B1/10 ,  H04B17/00 ,  H04L1/24 ,  H04L27/00

Abstract: A system comprises a modulator circuit, a test signal generator circuit, and a control circuit. The modulator circuit is operable to generate a data-carrying signal based on a reference signal. The test signal generator circuit is operable to generate a test signal based on the reference signal. The control circuit is operable to determine current status of a microwave backhaul link. The control circuit is operable to configure a nominal frequency at which the test signal generator circuit generates the test signal based on the determined status of the microwave backhaul link. The control circuit is operable to determine an amount of whitespace to have on either side of the test signal based on the current status of the microwave backhaul link. The control circuit is operable to configure the modulator circuit such that the data-carrying signal has the determined amount of whitespace surrounding the nominal frequency of the test signal.

公开(公告)号：US10126421B2

公开(公告)日：2018-11-13

申请号：US15150821

申请日：2016-05-10

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling

IPC: G01S13/93 ,  G01S13/87 ,  G01S13/02 ,  G01S13/89 ,  G01S13/42 ,  G01S7/28 ,  G01S13/86 ,  G01S7/00 ,  H01Q1/32 ,  G01S13/60 ,  H01Q3/24 ,  G01S7/40 ,  G01S13/00

Abstract: A radar transmitter comprises orthogonal frequency division multiplexing (OFDM) symbol generation circuitry, windowing circuitry, and control circuitry. The OFDM symbol generation circuitry is operable to modulate data onto a plurality of subcarriers to generate a plurality of OFDM symbols. The windowing circuitry is configurable to support a plurality of windowing functions. The control circuitry is operable to analyze returns from a previous transmission of the radar transmitter to determine characteristics of the environment into which the previous transmission was transmitted. The control circuitry is operable to select which one of the plurality of windowing functions the windowing circuitry is to apply to each of the plurality of OFDM symbols based on the characteristics of the environment. A first one of the windowing functions may correspond to a first radiation pattern and the second one of the windowing functions may correspond to a second radiation pattern.

公开(公告)号：US20180323864A1

公开(公告)日：2018-11-08

申请号：US16037800

申请日：2018-07-17

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher ,  Glenn Chang

IPC: H04B7/185 ,  H04W88/16 ,  H04W76/20 ,  H04W88/08 ,  G01S19/42 ,  H04W84/10 ,  H04W84/04 ,  H04W4/02 ,  H04N21/643 ,  H04N21/61 ,  H04N21/4627 ,  H04N21/45 ,  H04N21/441 ,  H04N21/4408 ,  H04N21/4405 ,  H04N21/438 ,  H04N21/4363 ,  H04N21/434 ,  H04N21/41 ,  H04L29/06 ,  H04L29/12 ,  H04L12/741 ,  H04J4/00 ,  H04H40/90 ,  H04H20/08 ,  H04H60/21 ,  H04H60/23 ,  H04W84/12

CPC classification number: H04B7/18526 ,  G01S19/42 ,  H04B7/185 ,  H04B7/18515 ,  H04B7/18517 ,  H04B7/18523 ,  H04H20/08 ,  H04H40/90 ,  H04H60/21 ,  H04H60/23 ,  H04J4/00 ,  H04L45/74 ,  H04L61/2007 ,  H04L65/4076 ,  H04N21/4126 ,  H04N21/4343 ,  H04N21/43637 ,  H04N21/4382 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/441 ,  H04N21/4524 ,  H04N21/4627 ,  H04N21/61 ,  H04N21/6143 ,  H04N21/6193 ,  H04N21/64322 ,  H04W4/023 ,  H04W76/20 ,  H04W84/042 ,  H04W84/10 ,  H04W84/12 ,  H04W88/08 ,  H04W88/16

Abstract: A satellite reception assembly that provides satellite television and/or radio service to a customer premises may comprise a wireless interface via which it can communicate with other satellite reception assemblies. Wireless connections between satellite reception assemblies may be utilized for providing satellite content between different satellite customer premises. Wireless connections between satellite reception assemblies may be utilized for offloading traffic from other network connections.