公开(公告)号：US20240283411A1

公开(公告)日：2024-08-22

申请号：US18335583

申请日：2023-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yanru TANG ,  Hou-Shin CHEN ,  Sahana SADAGOPAN ,  Bhupinder SACHDEV ,  Pranav DAYAL

IPC: H03F1/32 ,  H04L27/36 ,  H04W52/08

CPC classification number: H03F1/3258 ,  H04L27/367 ,  H04W52/08 ,  H03F2201/3233

Abstract: Methods and devices are provided in which a processor of a user equipment (UE) combines loop-back signals from a plurality of antenna paths of the UE to generate a combined signal. The loop-back signals are based on a signal transmitted over the antenna paths. The processor determines power amplifier (PA) polynomials based on a comparison of the combined signal to the signal transmitted over the antenna paths. The processor generates a single look-up table (LUT) for the PA polynomials. The processor applies the single LUT to a transmitted signal of the UE to compensate for PA non-linearity

公开(公告)号：US20230353195A1

公开(公告)日：2023-11-02

申请号：US17731251

申请日：2022-04-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yanru TANG ,  Pranav DAYAL ,  Hou-Shin CHEN ,  Pritesh VORA ,  Tienyu CHANG ,  Siuchuang Ivan LU ,  Kee-Bong SONG

IPC: H04B7/04 ,  H03F3/24

CPC classification number: H04B7/04 ,  H03F3/245 ,  H04B2001/0416

Abstract: A closed-loop power control (CLPC) system is disclosed that includes a first signal path for a first polarization and a second signal path for a second polarization. The first signal path includes a first power amplifier, a first output power detector configured to detect a first output power level of the first power amplifier, and a first processor configured to determine a first analog gain for a first controller and a first gain for a first digital-to-analog converter based on a first accumulated error between the first output power level and a target Effective Isotropically Radiated Power. A second processor is configured to set a first variable gain of a first variable gain amplifier coupled to an input of the first power amplifier. The CLPC can be configured to control the gain of the first signal path separately or as one signal path.

公开(公告)号：US20230082170A1

公开(公告)日：2023-03-16

申请号：US17982504

申请日：2022-11-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Pranav DAYAL ,  Kee-Bong SONG ,  Hou-Shin CHEN ,  Sung-En CHIU ,  Karthik NAGARAJAN

IPC: H04W52/24

Abstract: A method of controlling power in a transmission system may include determining a first transmit power of a first transmit path, determining a second transmit power of a second transmit path, and controlling the first transmit path and the second transmit path based on a combination of the first transmit power and the second transmit power. The combination of the first transmit power and the second transmit power may include a sum of the first transmit power and the second transmit power. Controlling the first transmit path and the second transmit path may include determining a first effective power target for the first transmit path based on the first transmit power and the second transmit power, and determining a second effective power target for the second transmit path based on the first transmit power and the second transmit power.

公开(公告)号：US20220116884A1

公开(公告)日：2022-04-14

申请号：US17222979

申请日：2021-04-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Pranav DAYAL ,  Kee-Bong SONG ,  Hou-Shin CHEN ,  Sung-En CHIU ,  Karthik NAGARAJAN

IPC: H04W52/24

Abstract: A method of controlling power in a transmission system may include determining a first transmit power of a first transmit path, determining a second transmit power of a second transmit path, and controlling the first transmit path and the second transmit path based on a combination of the first transmit power and the second transmit power. The combination of the first transmit power and the second transmit power may include a sum of the first transmit power and the second transmit power. Controlling the first transmit path and the second transmit path may include determining a first effective power target for the first transmit path based on the first transmit power and the second transmit power, and determining a second effective power target for the second transmit path based on the first transmit power and the second transmit power.