公开(公告)号：US10931347B2

公开(公告)日：2021-02-23

申请号：US16313616

申请日：2017-07-03

Applicant: Nokia Solutions and Networks Oy

Inventor： Bjoern Jelonnek ,  Gunter Wolff ,  Charles Nader ,  Frank Dechen

IPC: H04B7/06 ,  H03F1/32 ,  H03F3/24 ,  H04B1/04

Abstract: Linearizing Power Amplifiers' Outputs in Multi-Antenna System There is provided power efficient and simple structure for linearizing power amplifiers' outputs in multi-antenna beamforming systems. Beamforming factors are obtained for controlling transmission beams of the antennas in an analogue/hybrid beamforming system. At least one power amplifier model is determined on the basis of the power amplifiers' outputs and the beamforming factors. Predistortion parameters, for feeding a predistorted signal to power amplifiers for linearizing the power amplifiers' outputs, are determined such that after the operating parameters of the power amplifiers have been adjusted, errors in power amplifiers' outputs are reduced.