Reduced-complexity digital predistortion for massive MIMO
Abdelaziz, Mahmoud; Anttila, Lauri; Valkama, Mikko (2017-06-16)
Abdelaziz, Mahmoud
Anttila, Lauri
Valkama, Mikko
IEEE
16.06.2017
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202002132040
https://urn.fi/URN:NBN:fi:tuni-202002132040
Kuvaus
Peer reviewed
Tiivistelmä
A novel reduced-complexity digital predistortion (DPD) solution is presented in this paper. The proposed DPD can suppress the unwanted distortions due to power amplifier (PA) nonlinearity and I/Q modulator impairments in direct conversion transmitters using reduced-bandwidth filtered basis functions. Moreover, the DPD parameter estimation is based on very simple decorrelation based closed-loop processing and reduced-bandwidth observation, thus further reducing the overall complexity. The proposed DPD can be used in large array or massive MIMO systems with large number of radio transceivers and PAs, where reducing the complexity of the DPD processing is very critical.
Kokoelmat
- TUNICRIS-julkaisut [16908]