WIRELESS COMMUNICATION DEVICE FOR CORRECTING NONLINEARITY OF TRANSMITTER AND OPERATING METHOD THEREOF

    公开(公告)号:US20250119337A1

    公开(公告)日:2025-04-10

    申请号:US18905434

    申请日:2024-10-03

    Abstract: An operating method of a wireless communication device, the method including generating an IQ compensation value by performing IQ mismatch compensation on a first input signal using a linearity calibration model, the linearity calibration model being based on a neural network, generating a pre-distortion value by performing pre-distortion on the first input signal using the linearity calibration model, generating a first calibration signal based on the IQ compensation value and the pre-distortion value, generating a calibrated first output signal by amplifying the first calibration signal based on an amplification coefficient, and training the linearity calibration model based on the first input signal and the calibrated first output signal.

    METHOD AND APPARATUS FOR THERMAL MANAGEMENT IN WIRELESS COMMUNICATION

    公开(公告)号:US20220124616A1

    公开(公告)日:2022-04-21

    申请号:US17564705

    申请日:2021-12-29

    Inventor: Hyunseok YU

    Abstract: A signal processing device, which processes a baseband signal for wireless communication, includes a plurality of temperature sensors arranged to sense internal temperatures of the signal processing device, respectively, a threshold storage storing a plurality of thresholds, and a controller that estimates a surface temperature based on the sensed internal temperatures and performs a thermal mitigation operation based on the surface temperature and a plurality of temperature ranges defined by the plurality of thresholds.

    METHOD AND APPARATUS FOR SIDELINK TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240154843A1

    公开(公告)日:2024-05-09

    申请号:US18227143

    申请日:2023-07-27

    CPC classification number: H04L25/0214 H04L5/1469

    Abstract: An operating method of a first device which communicates with a second device based on time division duplex (TDD), includes: receiving a first signal from the second device; estimating a channel between the first device and the second device based on the first signal; generating, by applying singular value decomposition (SVD) to the estimated channel, a first orthogonal matrix including one or more left singular vectors, a diagonal matrix including one or more singular values, and a second orthogonal matrix including one or more right singular vectors; selecting at least one right singular vector from the second orthogonal matrix in descending order according to the one or more singular values, a number of the selected at least one right singular vector corresponding to a number of ranks of the channel; and transmitting, to the second device, a precoded physical sidelink shared channel (PSSCH) precoded based on a precoding matrix including the selected at least one right singular vector.

    ELECTRONIC DEVICE FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND OPERATING METHOD THEREOF

    公开(公告)号:US20230231684A1

    公开(公告)日:2023-07-20

    申请号:US18097944

    申请日:2023-01-17

    CPC classification number: H04L5/0051 H04L25/03343

    Abstract: An electronic device including a communication circuit configured to receive a reception signal including an interference signal, and to transmit a sounding reference signal (SRS) to a base station; and a control circuit comprising an interference estimation circuit configured to detect the interference signal in the reception signal, and a precoding matrix calculation circuit configured to generate an SRS precoding matrix corresponding to the SRS, based on a detection result obtained by the interference estimation circuit, wherein the control circuit is configured to control the communication circuit to transmit the SRS to the base station, and wherein the SRS is generated by multiplying a transmission signal by the SRS precoding matrix.

    MIMO TRANSMISSION APPARATUS AND OPERATING METHOD THEREOF

    公开(公告)号:US20230155645A1

    公开(公告)日:2023-05-18

    申请号:US17978559

    申请日:2022-11-01

    CPC classification number: H04B7/0456 H04B7/0617 H04B7/0634

    Abstract: An operating method of a wireless communication device includes calculating an effective channel matrix between the wireless communication device and a base station based on transmission characteristic information and channel information, the transmission characteristic information corresponding to the wireless communication device, and the channel information corresponding to a channel between the wireless communication device and the base station, determining a precoding matrix based on the effective channel matrix, and determining a transmission beamforming vector based on the precoding matrix.

    WIRELESS COMMUNICATION DEVICE FOR CONTROLLING TRANSMISSION POWER AND OPERATING METHOD THEREOF

    公开(公告)号:US20220201624A1

    公开(公告)日:2022-06-23

    申请号:US17530885

    申请日:2021-11-19

    Abstract: A method of controlling transmission power of a wireless communication device includes obtaining first electromagnetic wave information from the wireless communication device, the first electromagnetic wave information being obtained during a target duration, obtaining electromagnetic wave tendency information in the target duration based on the first electromagnetic wave information and second electromagnetic wave information, the second electromagnetic wave information being obtained during at least one previous duration, and controlling the transmission power based on the electromagnetic wave tendency information.

    METHOD AND APPARATUS FOR THERMAL MANAGEMENT IN WIRELESS COMMUNICATION

    公开(公告)号:US20200329431A1

    公开(公告)日:2020-10-15

    申请号:US16838453

    申请日:2020-04-02

    Inventor: Hyunseok YU

    Abstract: A signal processing device, which processes a baseband signal for wireless communication, includes a plurality of temperature sensors arranged to sense internal temperatures of the signal processing device, respectively, a threshold storage storing a plurality of thresholds, and a controller that estimates a surface temperature based on the sensed internal temperatures and performs a thermal mitigation operation based on the surface temperature and a plurality of temperature ranges defined by the plurality of thresholds.

    WIRELESS COMMUNICATION DEVICE WHICH ADJUSTS ENVELOPE DELAY AMOUNT

    公开(公告)号:US20240396652A1

    公开(公告)日:2024-11-28

    申请号:US18657270

    申请日:2024-05-07

    Abstract: A wireless communication device includes: a transmission path circuit configured to generate a radio frequency (RF) output signal, based on a transmission signal and a supply voltage tracking an envelope signal; a feedback path circuit configured to be connected to the transmission path circuit so as to receive the RF output signal as a feedback signal, when switching from normal mode to calibration mode; a time domain-based measurement circuit configured to generate, in the calibration mode, an adjacent channel leakage ratio for a reception signal based on a time domain; and at least one processor configured to adjust, in the calibration mode, an envelope delay amount for the envelope signal, based on the adjacent channel leakage ratio.

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