Modeling and Linearization of Multi-Antenna Transmitters Using Over-the-Air Measurements
Paper i proceeding, 2018

In this paper, we present a technique to model and linearize a multi-antenna transmitter using only a small set of observation receivers that perform over-the-air measurements. We assume that the transmitter suffers from distortion due to power amplifier (PA) nonlinearities but not from crosstalk. By avoiding the use of an observation receiver in every transmitter branch, the hardware complexity and cost of multi-antenna transmitters can be reduced. First, equations are developed to extract PA models from observation receivers. Based on the extracted PA models, predistorters can then be identified for every transmit branch. We present simulation results that demonstrate that it is indeed possible to model and linearize a set of PAs using only one single observation receiver.

Författare

Katharina Hausmair

Elektroteknik, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Ulf Gustavsson

Ericsson, Göteborg

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Thomas Eriksson

Elektroteknik, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

2018 IEEE International Symposium on Circuits and Systems (ISCAS)
Florence, Italy,

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling