MILLIMETER WAVE DIGITAL PREDISTORTION CALIBRATION

    公开(公告)号:US20240396578A1

    公开(公告)日:2024-11-28

    申请号:US18323286

    申请日:2023-05-24

    Abstract: Aspects described herein include devices and methods for facilitating digital predistortion calibration. One aspect includes selecting a first transmission element from a plurality of transmission elements associated with a first antenna element of a plurality of antenna elements in an antenna array of the millimeter wave communication device, wherein the first transmission element is selected based on a gain setting for the first transmission element, selecting a reference transmission power for a test transmission from the first transmission element as part of a path searching operation of the millimeter wave communication device, determining a selected receive element of the plurality of receive elements based on a near field power measurement of the reference transmission power from the first transmission element using the selected receive element and a set of selection criteria, and setting a digital predistortion calibration setting using the reference transmission power and the near field power measurement.

    BEAM DEPENDENT DIGITAL PRE-DISTORTION
    5.
    发明公开

    公开(公告)号:US20230223973A1

    公开(公告)日:2023-07-13

    申请号:US18188047

    申请日:2023-03-22

    CPC classification number: H04B7/0639 H04B1/0475 H04B2001/0425

    Abstract: Methods, systems, and devices for wireless communications are described. For example, a transmitting wireless device, such as a user equipment or a base station, may apply a first set of digital pre-distortion (DPD) coefficients to a plurality of antenna elements to form a first transmit beam. The wireless device may determine to switch from using the first transmit beam to using a second transmit beam that is different from the first transmit beam and may apply a second set of DPD coefficients to the plurality of antenna elements to form the second transmit beam, where the second set of DPD coefficients is different from the first set of DPD coefficients. The wireless device may transmit signaling using the second transmit beam based at least in part on applying the second set of DPD coefficients.

    PHASE SYNCHRONIZATION FOR ROUND TRIP DELAY ESTIMATION

    公开(公告)号:US20210044472A1

    公开(公告)日:2021-02-11

    申请号:US16683162

    申请日:2019-11-13

    Abstract: Phase variations between a transmitter (TX) waveform and a receiver (RX) waveform produced by a TX Phase-Locked-Loop (PLL) and a RX PLL, respectively, is a source of error in processing delay calibration used, e.g., in Round Trip Time (RTT) estimation. While a TX waveform and a RX waveform have a constant phase delay while in steady state conditions, during transient times, e.g., at start up or reset, the phase delay may vary by as much as ±180°, which at baseband frequencies of 50 MHz, introduces a random delay variations of as much as ±10 nsec, which is undesirable for fine position estimation using RTT. The phase delay variation between the TX waveform and RX waveform may be reduced or eliminated using a phase correction signal generated using the output signals of the TX PLL and RX PLL.

    RADIO-FREQUENCY-EXPOSURE-AWARE MOBILE NTN COMMUNICATIONS

    公开(公告)号:US20250031156A1

    公开(公告)日:2025-01-23

    申请号:US18354367

    申请日:2023-07-18

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for a mobile satellite communications application that is aware of radio frequency (RF) exposure. An example method of wireless communication by a wireless device includes determining an RF exposure budget for one or more future transmissions in compliance with an RF exposure limit. The method further includes obtaining a size of a payload for a potential transmission. The method further includes determining transmission information based at least in part on the RF exposure budget and the size of the payload. The method further includes outputting the transmission information for a user of the wireless device.

    POWER SUPPLY REUSE FOR HIGH-POWER POWER AMPLIFIER

    公开(公告)号:US20240429882A1

    公开(公告)日:2024-12-26

    申请号:US18339093

    申请日:2023-06-21

    Abstract: Certain aspects of the present disclosure are directed towards an amplification circuit. The amplification circuit generally includes: a first amplifier; a first power supply having an output coupled to a supply input of the first amplifier and configured to provide a first power to the supply input of the first amplifier; a second amplifier; a second power supply having an output coupled to a supply input of the second amplifier and configured to provide a second power to the supply input of the second amplifier; and a third amplifier having a supply input coupled to the first power supply and the second power supply, the first power supply and the second power supply being further configured to provide a third power to the supply input of the third amplifier.

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