Samsung Electronics Co., Ltd.

Joonhoi Hur

Youngki Lee

Dooseok Choi

Hongmin Choi

Hyung Sun Lim

Kyungwoo Yoo

Disclosed is an electronic device, which includes a predistorter that predistorts an input signal based on a predistortion coefficient to generate a predistortion signal; a power amplifier that amplifies the predistortion signal to generate an output signal; an error correction unit that updates the predistortion coefficient to minimize an Normalized Mean Square Error (NMSE) between the input signal and the output signal; and an ACLR adjustment unit that operates when the NMSE is minimized, calculates an Adjacent Channel Leakage Ratio (ACLR) from the output signal, and updates the predistortion coefficient to minimize a cost function defined based on the ACLR.

ACLR adjustable electronic device and operation method therefor

A wireless communications device may include a controller configured to, in a calibration mode, obtain a first output value of a first power detector after setting a first power amplifier to a first gain and obtain a second output value of the first power detector after setting the first power amplifier to a second gain, wherein the controller may estimate, in a normal mode, output power of a first antenna from an output value of the first power detector, based on a correction coefficient calculated using the first output value and the second output value.

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Suwon-si, South Korea

Joonhoi Hur