Modeling and Linearization of Multi-Antenna Transmitters Using Over-the-Air Measurements
Paper in proceedings, 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.

Author

Katharina Hausmair

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Ulf Gustavsson

Ericsson AB

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Thomas Eriksson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Proceedings - IEEE International Symposium on Circuits and Systems

02714310 (ISSN)

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

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/ISCAS.2018.8351266

More information

Latest update

1/22/2019