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    Wideband-tunable RF receiver with high dynamic range and high out-of-band rejection
    2.
    发明授权
    Wideband-tunable RF receiver with high dynamic range and high out-of-band rejection 有权

    公开(公告)号：US12237850B2

    公开(公告)日：2025-02-25

    申请号：US17934758

    申请日：2022-09-23

    Applicant: Eridan Communications, Inc.

    Inventor： Hazal Yüksel ,  Douglas Kirkpatrick ,  Dubravko Babić

    IPC: H04B1/00 ,  H04B1/10 ,  H04B1/30

    Abstract: A wideband-tunable radio frequency (RF) receiver having a tunable RF bandpass filter (RF BPF) and passive mixer-first receiver (PMF-Rx) is disclosed. The tunable RF BPF and PMF-Rx operate synergistically, exploiting the intrinsic impedance translation property of the PMF-Rx, to suppress out-of-band interferers as well as in-band interferers at the receiver front end and thereby enhance the receiver's signal-to-noise ratio and overall dynamic range. In one embodiment of the invention the tunable RF BPF and PMF-Rx are independently tunable and afford the receiver the ability to reject or suppress interferers that might not otherwise be able to be rejected or suppressed.

    Identifying signal interference sources
    4.
    发明授权
    Identifying signal interference sources 有权

    公开(公告)号：US12212377B2

    公开(公告)日：2025-01-28

    申请号：US18545490

    申请日：2023-12-19

    Applicant: DISH Wireless L.L.C.

    Inventor： Kevin Yao ,  Bill Versteeg

    IPC: H04B17/345 ,  H03G3/20 ,  H04B1/10 ,  H04B17/318 ,  H04L67/12 ,  H04B17/21

    Abstract: Devices, systems and processes for identifying and detecting an interfering signal are described. A process may include conducting a scan of one or more frequency bands to obtain at least one scan result and determining therefrom if a response condition has been detected. If so detected, a first frequency band corresponding to the detected response condition may be identified and a response condition action to be performed determined. If no response condition action is to be performed, scanning continues. If a response condition is to be performed two or more available sensors are identified and a first sensor is selected. A scan plan is developed and then initiated by the first sensor. Data from the first sensor is received and analyzed to identify a second frequency band indicative of an interfering signal. Based on at least the scan data, a location for a signal interference source (SIS) may be estimated.

    METHODS OF NONLINEARITY ESTIMATION, REPORTING, AND COMPENSATION
    5.
    发明申请
    METHODS OF NONLINEARITY ESTIMATION, REPORTING, AND COMPENSATION 有权

    公开(公告)号：US20250030580A1

    公开(公告)日：2025-01-23

    申请号：US18708004

    申请日：2021-11-11

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Ali BEHRAVAN ,  Hamed FARHADI

    IPC: H04L25/03 ,  H03F1/32 ,  H04B1/04 ,  H04B1/10

    Abstract: In one aspect, a method performed by a transmitter in a first device for signaling a nonlinearity profile of distortion of transmissions in a communications network is provided. The method includes generating an amplitude tracking reference signal (ATRS), wherein the ATRS comprises information indicating a nonlinearity profile of distortions of transmissions by the transmitter, and transmitting the generated ATRS towards a second device. In another aspect, a method performed by a receiver in a second device for identifying a nonlinearity profile of distortion of transmissions in a communications network by a transmitter in a first device is provided. The method includes receiving an ATRS from the first device, wherein the ATRS comprises information indicating a nonlinearity profile of distortions of transmissions by the transmitter and identifying the nonlinearity profile of distortion of transmissions by the transmitter based on the ATRS.

    Demodulating apparatus, base station and demodulating method
    6.
    发明授权
    Demodulating apparatus, base station and demodulating method 有权

    公开(公告)号：US12184315B2

    公开(公告)日：2024-12-31

    申请号：US18130113

    申请日：2023-04-03

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kenichi Takizawa ,  Masafumi Moriyama ,  Fumihide Kojima ,  Atsushi Kurosawa

    IPC: H04B1/12 ,  H04B1/00 ,  H04B1/10

    Abstract: The demodulating apparatus includes circuits of receiving modulated radio signals coming from a plurality of transmission devices, first demodulating a first reception signal DPSK-modulated among the radio signals, modulating demodulation signals into modulation signals based on DPSK, estimating an amplitude and a phase of a propagation signal on a propagation path leading to the reception circuit from the transmission device on the basis of the radio signal and the modulation signal, first generating, based on the variables, a first simulated signal simulating the first reception signal from the modulation signal, extracting a signal obtained by cancelling the first simulated signal from the radio signals, and repeating processes of the first demodulating, the modulating, the estimating, the first generating and the extracting to such a limit as to enable the first demodulating.

    NOISE FILTERING OF CHANNEL-STATE INFORMATION IN WIRELESS COMMUNICATION
    7.
    发明申请
    NOISE FILTERING OF CHANNEL-STATE INFORMATION IN WIRELESS COMMUNICATION 有权

    公开(公告)号：US20240429987A1

    公开(公告)日：2024-12-26

    申请号：US18822713

    申请日：2024-09-03

    Applicant: MEDIATEK INC.

    Inventor： Chao-Peng WANG ,  Tsung-Han TSAI ,  Shun-Yong HUANG

    IPC: H04B7/06 ,  H04B1/10 ,  H04W28/06

    Abstract: A device is provided, which includes one or more antennas and a circuit. The circuit is configured to receive a packet from a transmitter device through the antennas, and obtain channel-state information from the received packet. The circuit includes one or more filters to filter out or recognize the received packet that complies with one or more preset conditions. The circuit uses the channel-state information of the received packet, which complies with the one or more preset conditions, to estimate a status of a channel between the transmitter device and the device.

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