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公开(公告)号：WO2023076571A2
公开(公告)日：2023-05-04
申请号：PCT/US2022/048186
申请日：2022-10-28
申请人： PACKETCRAFT, INC.
发明人： YI, John, Seungtae
IPC分类号： H04B1/06 , H03L7/06 , H04B1/7183
摘要： A wireless receiver for receiving and outputting media content received from a wireless transmitter is provided. The wireless receiver may include a receiver circuit, a media content processing circuit, and a media content output circuit to output the prepared digital media data with a defined timing. The wireless receiver may further include a first clock signal generator configured to generate first timing signals for the media content processing circuit and the media content output circuit. The wireless receiver may further include a clock compensation circuit configured to receive a timing reference from a source device, receive and adjust a phase and/or a frequency of the first timing signals, and output adjusted first timing signals. The wireless receiver may further include a second clock signal generator configured to receive the adjusted first timing signals and to output second timing signals for clocking the media content output circuit.
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公开(公告)号：WO2022244904A1
公开(公告)日：2022-11-24
申请号：PCT/KR2021/006365
申请日：2021-05-21
申请人： 엘지전자 주식회사
摘要： 본 명세서는 오토 인코더를 이용하는 무선 통신 시스템에서 신호를 송수신하기 위한 방법을 제공한다. 보다 구체적으로, 송신단에 의해서 수행되는 상기 방법은, 사전 학습된 송신단 인코더 뉴럴 네트워크에 기초하여 적어도 하나의 입력 데이터 블록을 인코딩(encoding)하는 단계; 및 상기 인코딩된 적어도 하나의 입력 데이터 블록에 기초하여 상기 신호를 수신단으로 전송하는 단계를 포함하되, 상기 송신단 인코더 뉴럴 네트워크에 포함된 활성화 함수들 각각은 상기 활성화 함수들 각각에 입력될 수 있는 모든 입력 값들 중 일부의 입력 값들만을 입력 받고, 상기 송신단 인코더 뉴럴 네트워크는 2개의 입력 값을 입력 받아 2개의 출력 값을 출력하는 뉴럴 네트워크 구성 단위에 기초하여 구성되고, 상기 뉴럴 네트워크 구성 단위는 상기 2개의 입력 값을 모두 입력 받는 제 1 활성화 함수 및 상기 2개의 입력 값 중 하나의 입력 값만을 입력 받는 제 2 활성화 함수로 구성되며, 상기 2개의 출력 값 중 하나의 출력 값은, 상기 2개의 입력 값이 상기 제 1 활성화 함수로 입력되는 2개의 경로에 각각 적용된 가중치가 상기 2개의 입력 값에 각각 곱해지고, 상기 가중치가 각각 곱해진 2개의 입력 값의 합에 상기 제 1 활성화 함수가 적용되어 출력된 것이고, 상기 2개의 출력 값 중 나머지 하나의 출력 값은, 상기 하나의 입력 값이 상기 제 2 활성화 함수로 입력되는 경로에 적용된 가중치가 상기 하나의 입력 값에 곱해지고, 상기 가중치가 곱해진 하나의 입력 값에 상기 제 2 활성화 함수가 적용되어 출력된 것인 것을 특징으로 한다.
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公开(公告)号：WO2022020278A1
公开(公告)日：2022-01-27
申请号：PCT/US2021/042265
申请日：2021-07-20
申请人： ANALOG DEVICES, INC.
发明人： ALAVI, Reza , RUAN, Adam , LIU, Yupeng
摘要： The present disclosure provides a method and a system to estimate LO leakage and quadrature error parameters for a transmitter RF front end, such as a direct up-conversion transmitter RF front end, in a joint fashion. The proposed method utilizes a PN sequence inserted at the transmitter baseband. At the observation receiver side, an RX accumulator is implemented to sum receiver signals to take advantage of a despreading gain using the same PN sequence from transmitter side. Through the despreading process, the receiver-transmitter channel may be estimated and used to extract the quadrature error parameters. The estimated channel may also be used to eliminate user data interference presented within the RX accumulator output, which may further be used to compute the LO leakage.
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4.发明申请
公开(公告)号：WO2022005620A1
公开(公告)日：2022-01-06
申请号：PCT/US2021/031801
申请日：2021-05-11
申请人： SKYSAFE, INC.
IPC分类号： G08G5/00 , G08G5/0013 , G08G5/0026 , G08G5/0069 , G08G5/0082 , H04B1/06
摘要： Systems and methods for detecting, monitoring, and mitigating the presence of a drone are provided herein. In one aspect, a system for detecting presence of a drone includes a radio-frequency (RF) receiver. The system can further include a processor and a computer-readable memory in communication with the processor and having stored thereon computer-executable instructions to cause the at least one processor to receive a set of samples from the RF receiver for a time interval, obtain predetermined data of expected communication protocols used between the drone and a controller, and determine whether the RF signal corresponds to one of the expected communication protocols by comparing the samples of the RF signal to the predetermined data and decoding the RF signal. In further aspects the system extracts a unique identifier of the drone based at least partially on the decoded RF signal.
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公开(公告)号：WO2021257637A1
公开(公告)日：2021-12-23
申请号：PCT/US2021/037525
申请日：2021-06-15
申请人： CORNELL UNIVERSITY
摘要： A data communication device includes a battery having a first flowable electrolyte. In some embodiments, the battery is a redox flow battery (RFB) or a hybrid RFB. A first channel contains the first flowable electrolyte of the battery (i.e., contains at least a portion of the first flowable electrolyte). The first channel may include a tube and/or a reservoir. At least a portion of the first channel may be flexible and/or stretchable. The first channel has a first electrode configured to impart and/or receive a first electrical signal in the first flowable electrolyte. The first electrical signal may be a digital signal. The first electrical signal may be an encoded signal. The device may include a transceiver in electronic communication with the first electrode.
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公开(公告)号：WO2020172877A1
公开(公告)日：2020-09-03
申请号：PCT/CN2019/076570
申请日：2019-02-28
申请人： 华为技术有限公司
发明人： 赵兴山
摘要： 本申请实施例提供一种校正接收机的互调失真信号的方法及装置，涉及通信技术领域，能够更加有效地减小信号失真。该方法包括：检测第一支路的输出信号中的第一互调失真信号的当前能量，并且根据第一互调失真信号的当前能量和预存的第一互调失真信号的历史能量确定第一补偿电压，并利用第一补偿电压对第一支路中的第一混频器的阈值电压进行调整，以及检测第二支路的输出信号中的第二互调失真信号的当前能量，并且根据第二互调失真信号的当前能量和预存的第二互调失真信号的历史能量确定第二补偿电压，并利用第二补偿电压对所述第二支路中的第二混频器的阈值电压进行调整。
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公开(公告)号：WO2020132132A1
公开(公告)日：2020-06-25
申请号：PCT/US2019/067273
申请日：2019-12-18
申请人： MOVANO INC.
发明人： LEABMAN, Michael, A.
摘要： Devices, systems, and methods for multi-band radar sensing are disclosed. In an embodiment, an integrated circuit device includes transmit components and receive components, a low-band transmit interface connected to output a first signal at a low-band frequency, a high-band transmit interface connected to output a second signal at a high-band frequency, a low-band receive interface connected to receive a third signal at the low-band frequency, a high-band receive interface connected to receive a fourth signal at the high-band frequency, and mixers connected to upconvert the first signal at the low-band frequency to the second signal at the high-band frequency for transmission from the high-band transmit interface and to downconvert the fourth signal at the high-band frequency received at the high-band receive interface to a fifth signal at the low-band frequency, wherein the upconversion and the downconversion are implemented using a conversion signal at a conversion frequency.
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公开(公告)号：WO2019156762A1
公开(公告)日：2019-08-15
申请号：PCT/US2019/012470
申请日：2019-01-07
申请人： CUBIC CORPORATION
发明人： FLETCHER, Graham
摘要： Methods and devices for detecting wireless signal absorption using power sensing circuitry. One method includes receiving, by a receiving device having power sensing circuitry, a plurality of wireless signals from a plurality of transmitting devices. The power sensing circuitry may include a local oscillator, a mixer, and a band-pass filter. The method may also include detecting, by the power sensing circuitry, a plurality of power levels for the plurality of wireless signals, where each power level of the plurality of power levels corresponds one of the plurality of wireless signals. The method may further include analyzing, by one or more processors, the plurality of power levels to determine three characteristic power levels of the plurality of power levels. The method may further include calculating, by the one or more processors, an absorption amount based on the three characteristic power levels.
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公开(公告)号：WO2019132790A1
公开(公告)日：2019-07-04
申请号：PCT/TR2017/050716
申请日：2017-12-28
发明人： ŞEN, Bülent
摘要： With the present application, a digital outphasing transmitter with high efficiency, is provided. Said outphasing transmitter comprises, at least one decomposition unit (1) for decomposing an input signal to generate a first sub-signal (ρ(n)) and a second sub-signal (δ(n)); at least one outphasing signal generator (2) to convert said first sub-signal (ρ(n)) to an outphasing signal (∅ (n)); at least one delta sigma modulator (3) to convert said second sub-signal (δ(n)) to a delta sigma modulated signal (h(n)); at least one mixing unit (4) for mixing the outphasing signal (∅ (n)) and delta sigma modulated signal (h(n)) together to generate a first mixed signal and a second mixed signal; at least one first amplifier (5) for amplifying the first mixed signal; at least one second amplifier (6) for amplifying the second mixed signal; at least one combiner (7) for combining the amplified first mixed signal and amplified second mixed signal to generate a delta sigma modulated output signal and at least one band pass filter (8) for filtering the delta sigma modulated output signal to recover the input signal envelope back on to the output signal.
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公开(公告)号：WO2017152680A1
公开(公告)日：2017-09-14
申请号：PCT/CN2016/110463
申请日：2016-12-16
IPC分类号： H04L25/03 , H04B1/06 , H04B10/2507
摘要： An apparatus for performing fractionally spaced adaptive equalization with non-integer sub-symbol sampling has an adaptive equalizer that receives a continuous stream of input data having a non-integer, fractional delay between consecutive samples at a non-integer, sub-symbol rate and outputs a stream of equalized data based on tap weights of taps of the adaptive equalizer that are spaced at an interval corresponding to the non-integer, sub-symbol rate. The tap weights are updated independently of the fractional delay between consecutive samples of the input data using an error signal. An equalizer output alignment component downstream of the adaptive equalizer aligns the stream of equalized data with a corresponding transmitted symbol.
摘要翻译： 用于执行具有非整数子符号采样的分数间隔自适应均衡的设备具有自适应均衡器，该自适应均衡器接收在非连续采样之间的非整数分数延迟的连续输入数据流 整数，子符号率，并且基于自适应均衡器的抽头的抽头权重来输出均衡数据流，所述抽头权重以对应于非整数子符号率的间隔隔开。 使用误差信号独立于输入数据的连续采样之间的分数延迟来更新抽头权重。 自适应均衡器下游的均衡器输出对齐组件将均衡数据流与对应的传输符号对齐。
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