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1.发明申请公开(公告)号：US20220416912A1
公开(公告)日：2022-12-29
申请号：US17903450
申请日：2022-09-06
申请人： Kumu Networks, Inc.
摘要： A system for enhancing isolation in coexisting time-division duplexed (TDD) transceivers includes: a blocker canceller that transforms a transmit signal of a TDD transceiver into a blocker cancellation signal configured to remove transmit-band interference in a receive signal; a first filter that filters the blocker cancellation signal; a second filter that filters the transmit signal; and a transmit-noise canceller that transforms the filtered transmit signal into a transmit noise cancellation signal configured to remove receive-band interference in the receive signal.
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公开(公告)号：US20210328610A1
公开(公告)日：2021-10-21
申请号：US17361086
申请日：2021-06-28
申请人： Kumu Networks, Inc.
发明人： Jung-Il Choi , Mayank Jain , Christian Hahn
摘要： A system for linearized-mixer interference mitigation includes first and second linearized frequency downconverters; a sampling analog interference filtering system that, in order to remove interference in the transmit band, filters the sampled BB transmit signal to generate a cleaned BB transmit signal; an analog interference canceller that transforms the cleaned BB transmit signal to a BB interference cancellation signal; and a first signal coupler that combines the BB interference cancellation signal and the BB receive signal in order to remove a first portion of receive-band interference.
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公开(公告)号：US10804943B2
公开(公告)日：2020-10-13
申请号：US16539759
申请日：2019-08-13
申请人： Kumu Networks, Inc.
发明人： Wilhelm Steffen Hahn , Alfred Riddle , Ernie Landi , Dai Sieh , Jung-Il Choi , Mayank Jain
摘要： 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.
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公开(公告)号：US10673519B2
公开(公告)日：2020-06-02
申请号：US16118979
申请日：2018-08-31
申请人： Kumu Networks, Inc.
发明人： Steven Hong , Jeffrey Mehlman , Joel Brand , Jung-Il Choi , Mayank Jain
IPC分类号： H04B1/525 , H04B7/155 , H04B7/0413
摘要： 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.
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5.发明申请公开(公告)号：US20190158193A1
公开(公告)日：2019-05-23
申请号：US16197200
申请日：2018-11-20
申请人： Kumu Networks, Inc.
摘要： A system for enhancing isolation in coexisting time-division duplexed (TDD) transceivers includes: a blocker canceller that transforms a transmit signal of a TDD transceiver into a blocker cancellation signal configured to remove transmit-band interference in a receive signal; a first filter that filters the blocker cancellation signal; a second filter that filters the transmit signal; and a transmit-noise canceller that transforms the filtered transmit signal into a transmit noise cancellation signal configured to remove receive-band interference in the receive signal.
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公开(公告)号：US10177836B2
公开(公告)日：2019-01-08
申请号：US14473653
申请日：2014-08-29
申请人： Kumu Networks, Inc.
发明人： Steven Hong , Jeffrey Mehlman , Joel Brand , Jung-Il Choi , Mayank Jain
IPC分类号： H04B7/0413 , H04B7/155
摘要： 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.
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公开(公告)号：US20180006672A1
公开(公告)日：2018-01-04
申请号：US15706547
申请日：2017-09-15
申请人： Kumu Networks, Inc.
发明人： Jung-Il Choi , Mayank Jain
CPC分类号： H04B1/0475 , H04B1/1027 , H04B1/1036 , H04B1/109 , H04B2001/0491 , H04B2001/1045 , H04B2001/1072
摘要： 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.
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公开(公告)号：US20170279480A1
公开(公告)日：2017-09-28
申请号：US15496225
申请日：2017-04-25
申请人： Kumu Networks, Inc.
发明人： Jung-Il Choi , Mayank Jain , Jeff Mehlman , Steven Hong
摘要： A system and method for non-linear digital self-interference cancellation including a pre-processor that generates a first pre-processed digital transmit signal from a digital transmit signal of a full-duplex radio, a non-linear transformer that transforms the first pre-processed digital transmit signal into a non-linear self-interference signal according to a transform configuration, a transform adaptor that sets the transform configuration of the non-linear transformer, and a post-processor that combines the non-linear self-interference signal with a digital receive signal of the full-duplex radio.
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公开(公告)号：US09673854B2
公开(公告)日：2017-06-06
申请号：US15011093
申请日：2016-01-29
申请人： Kumu Networks, Inc.
发明人： Jung-Il Choi , Mayank Jain , Jeff Mehlman
CPC分类号： H04B1/525
摘要： A method for pilot signal based self-interference cancellation tuning includes detecting a tuning trigger and in response to the tuning trigger, generating a pilot transmit signal according to the trigger data; and transmitting, at the transmitter, the pilot transmit signal; receiving, at the receiver, a pilot receive signal; cancelling, at the self-interference canceller, a portion of self-interference in the receive pilot signal, resulting in a composite pilot signal; analyzing the composite pilot signal; and tuning a configuration parameter of the self-interference canceller, based on analysis of the composite pilot signal, resulting in reduced self-interference in the composite pilot signal.
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公开(公告)号：US09455761B2
公开(公告)日：2016-09-27
申请号：US15003036
申请日：2016-01-21
申请人： Kumu Networks, Inc.
IPC分类号： H04B1/62 , H04B1/38 , H04B15/00 , H04L5/14 , H04B1/00 , H04B1/48 , H04B1/12 , H04B1/525 , H04L27/32
CPC分类号： H04B1/62 , H04B1/00 , H04B1/123 , H04B1/38 , H04B1/48 , H04B1/525 , H04B15/00 , H04B2001/485 , H04L5/14 , H04L27/32
摘要： A system for multi-rate digital self-interference cancellation including a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal; a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal, according to a transform configuration, to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.
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