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    SYSTEMS AND METHODS FOR PHASE NOISE MITIGATION
    42.
    发明申请
    SYSTEMS AND METHODS FOR PHASE NOISE MITIGATION 有权

    公开(公告)号：US20150049834A1

    公开(公告)日：2015-02-19

    申请号：US14460218

    申请日：2014-08-14

    Applicant: Kumu Networks, Inc.

    Inventor： Jung-Il Choi ,  Mayank Jain ,  Jeffrey Mehlman

    IPC: H04B15/00 ,  H04L5/14

    CPC classification number: H04B1/525 ,  H04B1/48 ,  H04B7/0413 ,  H04B15/00 ,  H04B2001/485 ,  H04L5/14

    Abstract: A system for phase noise mitigated communication including a primary transmitter that converts a digital transmit signal to an analog transmit signal, a primary receiver that receives an analog receive signal and converts the analog receive signal to a digital receive signal, an analog self-interference canceller that samples the analog transmit signal, generates an analog self-interference cancellation signal based on the analog transmit signal, and combines the analog self-interference cancellation signal with the analog receive signal and a digital self-interference canceller that samples the digital transmit signal, generates a digital self-interference cancellation signal based on the digital transmit signal, and combines the digital self-interference cancellation signal with the digital receive signal.

    System and method for repeater TDD synchronization
    44.
    发明授权
    System and method for repeater TDD synchronization 有权

    公开(公告)号：US11457422B2

    公开(公告)日：2022-09-27

    申请号：US17464438

    申请日：2021-09-01

    Applicant: Kumu Networks, Inc.

    Inventor： Mayank Jain ,  Jung-Il Choi ,  Tanvi Jadhav

    IPC: H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04L5/14

    Abstract: A repeater system, preferably including one or more radio transceivers, such as a 5G NR transceiver configured to communicate with other elements of a 5G NR communication network such as user equipment and/or gNBs, and a signal processor. A method for repeater operation, preferably including determining synchronization information, operating in a synchronized repeater mode, and maintaining synchronization (such as by monitoring periodic signal timing and adjusting operation timing based on the monitoring), and optionally including operating in a fallback repeater mode.

    Self-interference-cancelled full-duplex relays
    45.
    发明授权
    Self-interference-cancelled full-duplex relays 有权

    公开(公告)号：US10979131B2

    公开(公告)日：2021-04-13

    申请号：US16202830

    申请日：2018-11-28

    Applicant: Kumu Networks, Inc.

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

    IPC: H04B7/04 ,  H04B7/155 ,  H04B7/0413

    Abstract: A 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 a 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 out-of-band interference mitigation
    48.
    发明授权
    Systems and methods for out-of-band interference mitigation 有权

    公开(公告)号：US10404297B2

    公开(公告)日：2019-09-03

    申请号：US16262045

    申请日：2019-01-30

    Applicant: Kumu Networks, Inc.

    Inventor： Jung-Il Choi ,  Mayank Jain

    IPC: H04B1/10 ,  H04B1/04

    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 interference filtering system that, in order to remove interference in the transmit band, filters the sampled RF transmit signal to generate a cleaned transmit 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; and an analog-to-digital converter that converts the transmit signal to a digital transmit signal.

    SYSTEMS AND METHODS FOR CONFIGURABLE HYBRID SELF-INTERFERENCE CANCELLATION
    49.
    发明申请
    SYSTEMS AND METHODS FOR CONFIGURABLE HYBRID SELF-INTERFERENCE CANCELLATION 审中-公开

    公开(公告)号：US20190268029A1

    公开(公告)日：2019-08-29

    申请号：US16288033

    申请日：2019-02-27

    Applicant: Kumu Networks, Inc.

    Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi ,  Dai Sieh ,  Jung-Il Choi ,  Mayank Jain

    IPC: H04B1/10 ,  H04B1/40 ,  H04L5/14

    Abstract: A system for self-interference cancellation includes a frequency downconverter that decomposes a sampled RF transmit signal into an in-phase transmit signal and a quadrature transmit signal; a first analog vector modulator that scales the transmit signals to generate first scaled transmit signals; a second analog vector modulator that scales delayed transmit signals to generate second scaled transmit signals; a frequency upconverter that recomposes the scaled transmit signals into an RF self-interference cancellation signal; and a receive coupler that that combines the RF self-interference cancellation signal with a RF receive signal to reduce self-interference.

    Analog self-interference cancellation systems for CMTS
    50.
    发明授权
    Analog self-interference cancellation systems for CMTS 有权

    公开(公告)号：US10382085B2

    公开(公告)日：2019-08-13

    申请号：US16230077

    申请日：2018-12-21

    Applicant: Kumu Networks, Inc.

    Inventor： Jung-Il Choi ,  Wilhelm Steffen Hahn ,  Mayank Jain

    IPC: H04B1/44 ,  H04B1/525 ,  H04L5/14 ,  H01Q25/00 ,  H04L27/38 ,  H01Q21/24 ,  H01Q1/24

    Abstract: A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.

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