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1. (WO2018002694) PRE-DISTORTION CIRCUIT, APPARATUS, METHOD AND COMPUTER PROGRAM FOR PRE-DISTORTING, TRANSMITTER, RADIO TRANSCEIVER, MOBILE TRANSCEIVER, BASE STATION TRANSCEIVER, COMMUNICATION DEVICE, STORAGE

Pub. No.:    WO/2018/002694    International Application No.:    PCT/IB2016/053984
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Sat Jul 02 01:59:59 CEST 2016
IPC: H04L 25/49
H04L 1/00
H04L 27/20
Applicants: INTEL IP CORPORATION
Inventors: MARKOVIC, Jovan
MAYER, Christian
ZALESKI, Jan
Title: PRE-DISTORTION CIRCUIT, APPARATUS, METHOD AND COMPUTER PROGRAM FOR PRE-DISTORTING, TRANSMITTER, RADIO TRANSCEIVER, MOBILE TRANSCEIVER, BASE STATION TRANSCEIVER, COMMUNICATION DEVICE, STORAGE
Abstract:
Embodiments provide a pre-distortion circuit and apparatus, a method and computer program for pre-distorting, a transmitter, a radio transceiver, a communication device, a mobile transceiver, a base station transceiver and a storage. The pre-distortion circuit (10) is configured for a digital quadrature signal. The pre-distortion circuit (10) comprises a first input (12) for an inphase component of the quadrature signal and a second input (14) for a quadrature component of the quadrature signal. The pre-distortion circuit 10 comprises a signal processing circuit (16) configured to determine whether polarities of the inphase component and quadrature component are equal, and to determine pre-distortion coefficients based on the amplitude of the inphase component, the amplitude of the quadrature component, and based on whether the polarities are equal.