Samsung Electronics Co., Ltd.

Hyunseok Yu

Youngik Cho

Daeyoung Kim

Hongmin Choi

Junse Lee

Joohyun Do

Joontae Kim

Byongok Lee

Gangminh Lee

Dongwook Lee

Kiil Kim

Jeongtaek Lee

An operating method of a wireless communications device includes identifying a modulation order and resource allocation information of a first uplink signal transmitted in a first symbol and a second uplink signal transmitted in a second symbol preceding the first symbol, controlling a difference between a supply modulator output voltage value for the first uplink signal and a supply modulator output voltage value for the second uplink signal, based on the identified order or information, and transmitting the first uplink signal, based on the controlled difference between the supply modulator output voltage values.

Wireless communications device for transmitting uplink signal and operating method thereof

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.

Electronic device for transmitting sounding reference signal in wireless communication system and operating method thereof

According to an aspect of the inventive concept, an electronic device includes a transmitter including a plurality of antennas, and a communication processor for calculating a total exposure ratio (TER) value of each of the plurality of antennas, wherein the communication processor includes an antenna index buffer for storing a used antenna index, which is an index of one or more used antennas from among the plurality of antennas used in each window, a used power buffer for storing used power of an antenna corresponding to the used antenna index, and a controller configured to calculate the TER value based on the used antenna index, the used power, and an influence matrix.

Electronic device and operating method of electronic device

An adaptive filter circuit includes a plurality of filter cores associated with each other and configured to perform a calculation operation on a first target input signal, and an auxiliary core configured to generate cross-terms between block correlation matrices respectively corresponding to kernels that correspond to the first target input signal and provide the cross-terms to the plurality of filter cores, where the plurality of filter cores are further configured to estimate effective channels respectively corresponding to the kernels based on the cross-terms.

Adaptive filter circuit having low complexity and flexible structure and device including the same

Provided is an interference cancellation circuit including a relative delay control circuit receiving a first transmission signal of a first frequency, and a second transmission signal of a second frequency different from the first frequency and including a first delay buffer delaying the second transmission signal by a first delay time and a second delay buffer delaying the second transmission signal by a second delay time, a delay reference generation circuit generating respective reference signals by receiving the first transmission signal and the delayed second transmission signal from the relative delay control circuit, a weight control circuit updating a weight vector, a relative delay estimation circuit estimating a relative delay based on the reference signals, and an adaptive filter generating an interference model signal based on the weight vector and a first reference signal of the reference signals and filter the interference model signal from a received signal.

Interference cancellation circuit and operating method thereof

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.

MIMO transmission apparatus and operating method thereof

A signal processing apparatus for controlling exposure to wireless communication includes processing circuitry configured to control transmission through a first antenna module based on a reflection coefficient of a second antenna module, the first antenna module configured for wireless communication in a first frequency band, the second antenna module configured for wireless communication in a second frequency band, the second frequency band being a lower frequency band than the first frequency band.

Apparatuses and methods for controlling exposure to wireless communication

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.

Wireless communication device for controlling transmission power and operating method thereof

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 thermal management in wireless communication

A device configured to perform wireless communication includes: a pre-distortion circuit configured to generate a pre-distorted input signal by performing pre-distortion on an input signal based on a parameter set comprising a plurality of coefficients; a power amplifier configured to generate an output signal by amplifying an RF signal based on the pre-distorted input signal; and a parameter obtaining circuit configured to obtain second memory polynomial modeling information corresponding to an operating frequency band based on first memory polynomial modeling information corresponding to each of a plurality of frequency sections and obtain a parameter set according to an indirect learning structure by using the second memory polynomial modeling information.

Device and method for compensating for nonlinearity of power amplifier

Systems and methods are described to perform wireless communication. The device includes a pre-distortion circuit configured to pre-distort an input signal based on a parameter set including a plurality of coefficients and generate a pre-distorted signal, a power amplifier configured to amplify the pre-distorted signal and generate an output signal, and a parameter obtaining circuit configured to perform an iterative approximation operation based on the output signal and the pre-distorted signal, which change over time, according to an indirect training structure configured to minimize a difference between an intermediate signal obtained based on the output signal and the pre-distorted signal, and obtain the parameter set.

Device and method of compensating for nonlinearity of power amplifier

A method of operating a wireless communication device for correcting an offset between a base station and the wireless communication device includes determining whether to perform offset correction using a first target synchronization signal block (SSB) to generate a determination result in response to changing a selected reception beam from a first reception beam to a second reception beam in an SSB period, the first target SSB being received via the second reception beam, and performing the offset correction on the second reception beam using at least one first neighbor SSB based on the determination result, the at least one first neighbor SSB being received via the first reception beam.

Wireless communication device for correcting offset between base station and wireless communication device and method of operating the same

An apparatus and method are provided for controlling a transmission power of a wireless communications device to comply with an output energy limit during a measurement period, including calculating a target output energy based on a communications channel; calculating a first average output energy corresponding to a previous period having a duration substantially equal to the measurement period; calculating a second average output energy by low-pass-filtering the target output energy and the first average output energy; and limiting the transmission power of the wireless communications device based on an energy margin between the output energy limit and the second average output energy.

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Seoul, South Korea

Hyunseok Yu