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    OPTICALLY ENHANCED SELF-INTERFERENCE CANCELLATION
    52.
    发明申请
    OPTICALLY ENHANCED SELF-INTERFERENCE CANCELLATION 审中-公开

    公开(公告)号：US20180375566A1

    公开(公告)日：2018-12-27

    申请号：US16118979

    申请日：2018-08-31

    Applicant: Kumu Networks, Inc.

    Inventor： Steven Hong ,  Jeffrey Mehlman ,  Joel Brand ,  Jung-Il Choi ,  Mayank Jain

    IPC: H04B7/155 ,  H04B7/0413 ,  H04B1/525

    CPC classification number: H04B7/15585 ,  H04B1/525 ,  H04B7/0413

    Abstract: An optically-enhanced relay including a first transmitter that converts a first digital transmit signal to a first analog transmit signal, a first receiver that converts a first analog receive signal to a first digital receive signal, a second transmitter that converts a second digital transmit signal to a second analog transmit signal, a second receiver that converts a second analog receive signal to a second digital receive signal, and an optically-enhanced analog self-interference canceller that generates a first self-interference cancellation signal based on at least one of the first digital transmit signal and the first analog transmit signal, and combines the first self-interference cancellation signal with at least one of the first digital receive signal and the first analog receive signal.

    SYSTEMS AND METHODS FOR SELF-INTERFERENCE CANCELLER TUNING
    53.
    发明申请
    SYSTEMS AND METHODS FOR SELF-INTERFERENCE CANCELLER TUNING 有权

    公开(公告)号：US20170264420A1

    公开(公告)日：2017-09-14

    申请号：US15608163

    申请日：2017-05-30

    Applicant: Kumu Networks, Inc.

    Inventor： Dinesh Bharadia ,  Jung-Il Choi ,  Mayank Jain

    IPC: H04L5/14 ,  H04L5/00 ,  H04B1/525

    CPC classification number: H04L5/1438 ,  H04B1/525 ,  H04L5/0007 ,  H04L5/143 ,  H04L5/1461

    Abstract: A system for self-interference canceller tuning includes a transmit coupler that creates a sampled analog transmit signal; an analog self-interference canceller that transforms the sampled analog transmit signal to an analog self-interference cancellation signal according to a set of tuning parameters, the set of tuning parameters comprising complex weights for a set of taps of the analog self-interference canceller; a tuning circuit that calculates the set of tuning parameters, and applies the set of tuning parameters to the analog self-interference canceller based on component calibration data of the analog self-interference canceller; and a receive coupler that combines the analog self-interference cancellation signal with the analog receive signal to reduce self-interference in the analog receive signal.

    Systems and methods for adaptively-tuned digital self-interference cancellation
    54.
    发明授权
    Systems and methods for adaptively-tuned digital self-interference cancellation 有权

    公开(公告)号：US09742593B2

    公开(公告)日：2017-08-22

    申请号：US15362289

    申请日：2016-11-28

    Applicant: Kumu Networks, Inc.

    Inventor： Rajendra Tushar Moorti ,  Jung-Il Choi ,  Mayank Jain

    IPC: H04L25/03 ,  H04L27/26 ,  H04L12/801

    CPC classification number: H04L25/03006 ,  H04L25/0204 ,  H04L25/0328 ,  H04L27/265 ,  H04L47/29

    Abstract: A method for adaptively-tuned digital self-interference cancellation comprises receiving a digital transmit signal; receiving a transform configuration; generating a set of signal components from the digital transmit signal; transforming the set of signal components into a digital self-interference cancellation signal according to the transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; detecting a trigger; in response to detecting the trigger: computing a ratio of the digital residue signal to the digital transmit signal; converting the ratio to the frequency-domain to form a frequency-domain-converted ratio; computing a frequency-domain self-interference channel between the transmitter and the receiver based on the frequency-domain-converted ratio; computing an inverse discrete Fourier transform matrix based on a portion of the discrete Fourier transform matrix; converting the frequency-domain self-interference channel to form a time-domain self-interference channel; and updating the transform configuration based on the time-domain self-interference channel.

    SYSTEMS AND METHODS FOR ADAPTIVELY-TUNED DIGITAL SELF-INTERFERENCE CANCELLATION
    55.
    发明申请
    SYSTEMS AND METHODS FOR ADAPTIVELY-TUNED DIGITAL SELF-INTERFERENCE CANCELLATION 有权

    公开(公告)号：US20170180160A1

    公开(公告)日：2017-06-22

    申请号：US15362289

    申请日：2016-11-28

    Applicant: Kumu Networks, Inc.

    Inventor： Rajendra Tushar Moorti ,  Jung-Il Choi ,  Mayank Jain

    IPC: H04L25/03 ,  H04L12/801 ,  H04L27/26

    CPC classification number: H04L25/03006 ,  H04L25/0204 ,  H04L25/0328 ,  H04L27/265 ,  H04L47/29

    Abstract: A method for adaptively-tuned digital self-interference cancellation comprises receiving a digital transmit signal; receiving a transform configuration; generating a set of signal components from the digital transmit signal; transforming the set of signal components into a digital self-interference cancellation signal according to the transform configuration; combining the digital self-interference cancellation signal with a receive signal to form a digital residue signal; detecting a trigger; in response to detecting the trigger: computing a ratio of the digital residue signal to the digital transmit signal; converting the ratio to the frequency-domain to form a frequency-domain-converted ratio; computing a frequency-domain self-interference channel between the transmitter and the receiver based on the frequency-domain-converted ratio; computing an inverse discrete Fourier transform matrix based on a portion of the discrete Fourier transform matrix; converting the frequency-domain self-interference channel to form a time-domain self-interference channel; and updating the transform configuration based on the time-domain self-interference channel.

    SYSTEMS AND METHODS FOR OUT-OF BAND-INTERFERENCE MITIGATION
    56.
    发明申请
    SYSTEMS AND METHODS FOR OUT-OF BAND-INTERFERENCE MITIGATION 有权

    公开(公告)号：US20170179983A1

    公开(公告)日：2017-06-22

    申请号：US15378180

    申请日：2016-12-14

    Applicant: Kumu Networks, Inc.

    Inventor： Jung-ll Choi ,  Mayank Jain

    IPC: H04B1/04 ,  H04B1/10

    CPC classification number: H04B1/0475 ,  H04B1/1027 ,  H04B1/1036 ,  H04B1/109 ,  H04B2001/0491 ,  H04B2001/1045 ,  H04B2001/1072

    Abstract: A system for interference mitigation including a transmit coupler that samples the RF transmit signal to create a sampled RF transmit signal; a transmit analog canceller that transforms the RF transmit signal to an RF interference cancellation signal, according to a first configuration state; a first receive coupler that combines the RF interference cancellation signal and the RF receive signal to generate a composite RF receive signal; a sampling analog canceller that transforms the RF transmit signal to a RF interference cancellation signal, according to a second configuration state; a cleaning coupler that combines the RF transmit signal and the second RF interference cancellation signal; a first frequency downconverter that converts the transmit signal to a BB transmit signal; a second frequency downconverter that converts the composite RF receive signal to a composite BB receive signal; an analog-to-digital converter that converts the transmit signal to a digital transmit signal.

    Systems for analog phase shifting
    58.
    发明授权
    Systems for analog phase shifting 有权
    模拟相移系统

    公开(公告)号：US09521023B2

    公开(公告)日：2016-12-13

    申请号：US14887198

    申请日：2015-10-19

    Applicant: Kumu Networks, Inc.

    Inventor： Ricardo Martinez ,  Joseph Shalizi ,  Ernie Landi ,  Mayank Jain ,  Jung-Il Choi

    IPC: H04B1/10 ,  H04L27/20 ,  H03C3/12 ,  H04B1/525 ,  H01Q3/36 ,  H04B7/155

    CPC classification number: H04L27/2003 ,  H01Q3/36 ,  H03C3/12 ,  H04B1/10 ,  H04B1/525 ,  H04B7/15585

    Abstract: A system for phase shifting that produces an output signal by modifying a phase of an input signal, including a primary phase shifting stage that modifies the input signal phase in increments set by a first tuning resolution; a secondary phase shifting stage that modifies the input signal phase in increments set by a second tuning resolution; and, a tuning circuit that controls the primary phase shifting stage and the secondary phase shifting stage according to control input.

    Abstract translation: 一种用于相移的系统，其通过修改输入信号的相位来产生输出信号，所述相位包括以由第一调谐分辨率设定的增量修改输入信号相位的主相移级; 第二相移级，其以由第二调谐分辨率设置的增量修改输入信号相位; 以及根据控制输入控制主相移级和次相移阶段的调谐电路。

    Signal cancellation using feedforward and feedback paths
    59.
    发明授权
    Signal cancellation using feedforward and feedback paths 有权
    使用前馈和反馈路径消除信号

    公开(公告)号：US09490963B2

    公开(公告)日：2016-11-08

    申请号：US14172805

    申请日：2014-02-04

    Applicant: Kumu Networks, Inc.

    Inventor： Jung-il Choi ,  Steven Hong ,  Mayank Jain ,  Sachin Katti ,  Philip Levis ,  Jeff Mehlman

    IPC: H04L5/14 ,  H04L1/00 ,  H04B1/525

    CPC classification number: H04L5/1461 ,  H04B1/525 ,  H04L1/0036

    Abstract: A circuit that cancels a self-interference signal includes, in part, a pair of signal paths that are substantially in phase, each of which paths includes a passive coupler, a delay element and a variable attenuator. The circuit further includes, in part, a first group of P signal paths each of which is substantially in phase with the pair of paths, a second group of M signal paths each of which is substantially out-of-phase relative to the pair of signal paths, and at least a pair of feedback paths. Each of the P and M signal paths, as well as the feedback paths includes a delay element and a variable attenuator. Optionally, each of the M signal paths is optionally 180° out-of-phase relative to the pair of signal paths.

    Abstract translation: 消除自干扰信号的电路部分地包括基本上同相的一对信号路径，其中每个路径包括无源耦合器，延迟元件和可变衰减器。 该电路部分地还包括第一组P信号路径，每个P信号路径基本上与该对路径相同，第二组M个信号路径，每个M个信号路径相对于一对路径基本上是异相的 信号路径和至少一对反馈路径。 P和M信号路径中的每一个以及反馈路径包括延迟元件和可变衰减器。 可选地，M个信号路径中的每一个相对于一对信号路径可选地是180°异相。

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