公开(公告)号：US20180013495A1

公开(公告)日：2018-01-11

申请号：US15710884

申请日：2017-09-21

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling

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

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：US20170373912A1

公开(公告)日：2017-12-28

申请号：US15682446

申请日：2017-08-21

Applicant: Maxlinear, Inc.

Inventor： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC: H04L27/38 ,  H04L27/233 ,  H04L27/36

CPC classification number: H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/2636 ,  H04L27/361 ,  H04L27/366

Abstract: Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may comprise receiving a plurality of radio frequency (RF) channels, downconverting the received plurality of received RF channels to baseband frequencies, determining and removing average in-phase (I) and quadrature (Q) gain and phase mismatch of the downconverted channels, determining a phase and amplitude tilt of the downconverted channels with removed average I and Q gain and phase mismatch, and compensating for said phase and amplitude tilt I and Q gain and phase mismatch of the downconverted channels. The determined phase tilt may be compensated utilizing a phase tilt correction filter, which may comprise one or more all-pass filters. The average I and Q gain and phase mismatch may be determined utilizing a blind source separation (BSS) estimation algorithm.

公开(公告)号：US20170359678A1

公开(公告)日：2017-12-14

申请号：US15633146

申请日：2017-06-26

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher

IPC: H04W4/00 ,  G06F3/0481 ,  H04W52/28 ,  H04W76/02 ,  H04B17/318 ,  G01S11/06 ,  H04W12/08 ,  H04W72/04 ,  H04B5/00 ,  H04B17/309 ,  H04W84/18

CPC classification number: H04W4/80 ,  G01S11/06 ,  G06F3/0481 ,  H04B5/00 ,  H04B5/0037 ,  H04B7/18517 ,  H04B17/309 ,  H04B17/318 ,  H04W12/08 ,  H04W52/283 ,  H04W72/0453 ,  H04W76/10 ,  H04W84/18

Abstract: A wireless communication device generates and transmits wireless broadband signals at a power level that is below a spurious emissions mask such that the transmitted wireless broadband signals occupy a designated frequency spectrum band. A bandwidth of the wireless broadband signals may occupy approximately 800 MHz within a range of 0 Hz to 1 GHz. The transmit power utilized for transmitting the wireless broadband signals may be spread over a bandwidth of approximately 300 MHz within the 800 MHz bandwidth. The spreading results in a power spectral density of the transmitted wireless broadband signals approximating thermal noise at a distance of approximately 3 meters. Available channels within the designated frequency spectrum band may be sensed for the transmission of the wireless broadband signals. A plurality of the sensed available channels may be aggregated for the transmission of the wireless broadband signals.

公开(公告)号：US20170331566A1

公开(公告)日：2017-11-16

申请号：US15668883

申请日：2017-08-04

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sheng Ye

IPC: H04B17/00 ,  H04B7/08 ,  H04B7/06 ,  H04B10/43 ,  H04B17/12 ,  H01Q3/26 ,  H01Q3/24

CPC classification number: H04B7/086 ,  H01Q3/24 ,  H01Q3/247 ,  H01Q3/267 ,  H04B7/0617 ,  H04B10/25752 ,  H04B10/40 ,  H04B10/43 ,  H04B17/0085 ,  H04B17/12 ,  H04B2201/709709

Abstract: Each of a plurality of modules comprises a respective one of a plurality of antenna elements, and each of a subset of the plurality of modules comprising a respective one of a plurality of transceivers, wherein the plurality of modules are interconnected via one or more communication links. The circuitry may be operable to receive a calibration signal via the plurality of antenna elements, determine, for each one of the antenna elements, a time and/or phase of arrival of the calibration signal, calculate, based on the time and/or phase of arrival of the calibration signal at each of the plurality of antenna elements, electrical distances between the plurality of antenna elements on the one or more communication links, and calculate beamforming coefficients for use with the plurality of antenna elements based on the electrical distances.

公开(公告)号：US09819992B2

公开(公告)日：2017-11-14

申请号：US14948881

申请日：2015-11-23

Applicant: MaxLinear, Inc.

Inventor： Madhukar Reddy ,  Curtis Ling ,  Tim Gallagher

IPC: H04B1/16 ,  H04N21/40 ,  H04H40/90 ,  H04N21/426 ,  H04B1/00 ,  H04N5/50 ,  H04N21/438 ,  H04N21/454 ,  H04N21/61 ,  H04N5/455

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.

公开(公告)号：US09768852B2

公开(公告)日：2017-09-19

申请号：US14931103

申请日：2015-11-03

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sheng Ye

IPC: H04B17/00 ,  H04B7/08 ,  H01Q3/24 ,  H04B10/40 ,  H04B7/06 ,  H04B17/12

CPC classification number: H04B7/086 ,  H01Q3/24 ,  H01Q3/247 ,  H01Q3/267 ,  H04B7/0617 ,  H04B10/25752 ,  H04B10/40 ,  H04B10/43 ,  H04B17/0085 ,  H04B17/12 ,  H04B2201/709709

Abstract: Each of a plurality of modules comprises a respective one of a plurality of antenna elements, and each of a subset of the plurality of modules comprising a respective one of a plurality of transceivers, wherein the plurality of modules are interconnected via one or more communication links. The circuitry may be operable to receive a calibration signal via the plurality of antenna elements, determine, for each one of the antenna elements, a time and/or phase of arrival of the calibration signal, calculate, based on the time and/or phase of arrival of the calibration signal at each of the plurality of antenna elements, electrical distances between the plurality of antenna elements on the one or more communication links, and calculate beamforming coefficients for use with the plurality of antenna elements based on the electrical distances.

公开(公告)号：US20170163486A1

公开(公告)日：2017-06-08

申请号：US15434673

申请日：2017-02-16

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

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

CPC classification number: H04L41/0823 ,  H04B17/318 ,  H04L1/0009 ,  H04L1/0026 ,  H04L12/2801 ,  H04L27/2601 ,  H04L27/2602 ,  H04L43/08 ,  H04L43/12

Abstract: A cable modem termination system (CMTS) may determine, for a plurality of cable modems served by the CMTS, a corresponding plurality of SNR-related metrics. The CMTS may assigning the modems among a plurality of service groups based on the SNR-related metrics. For any one of the modems, the CMTS may configure physical layer communication parameters to be used by the one of the modems based on a SNR-related metric of a service group to which the one of the modems is assigned. The physical layer communication parameters may include one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate. The CMTS and the modems may communicate using orthogonal frequency division multiplexing (OFDM) over a plurality of subcarriers, and the physical layer communication parameters may be determined on a per-subcarrier basis.

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.

公开(公告)号：US20170150202A1

公开(公告)日：2017-05-25

申请号：US15426382

申请日：2017-02-07

Applicant: Maxlinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

IPC: H04N21/426 ,  H04N21/61 ,  H04N21/438 ,  H04N21/443

CPC classification number: H04N21/4263 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4383 ,  H04N21/4436 ,  H04N21/4622 ,  H04N21/6143

Abstract: Methods and systems for multi-path video and network channels may comprise a communication device comprising a wideband tuner (WB) and a narrowband tuner (NB). A video channel and a network channel may be received in the WB when the device is operating in a first stage. A video channel and a network channel may be received in the WB and the network channel may also be received in the NB when the device is operating in a second stage. The network channel may be received in the NB when the device is operating in a third stage. The reception of the network channel from both the WB and NB may enable a continuous reception of the network channel in a transition between the first and third stages. The WB may be operable to receive a plurality of channels and the NB may be operable to receive a single channel.

公开(公告)号：US20170149439A1

公开(公告)日：2017-05-25

申请号：US15364577

申请日：2016-11-30

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling

IPC: H03M1/00 ,  H03M1/74 ,  H04B1/40 ,  H03M1/36

CPC classification number: H03M1/002 ,  H03M1/12 ,  H03M1/188 ,  H03M1/36 ,  H03M1/66 ,  H03M1/70 ,  H03M1/74 ,  H04B1/40

Abstract: Aspects of a method and system for data converters having a transfer function with multiple operating zones. In some embodiments, an operating zone of the multiple operating zones is characterized by more stringent performance criteria than the other operating zones. Thus, such data converters may receive an input signal and generate an output signal from the input signal per the transfer function and the more stringent performance criteria in the appropriate operating zone.