HybridDeepRx : Deep Learning Receiver for High-EVM Signals
Pihlajasalo, Jaakko; Korpi, Dani; Honkala, Mikko; Huttunen, Janne M.J.; Riihonen, Taneli; Talvitie, Jukka; Brihuega, Alberto; Uusitalo, Mikko A.; Valkama, Mikko (2021-09-13)
Pihlajasalo, Jaakko
Korpi, Dani
Honkala, Mikko
Huttunen, Janne M.J.
Riihonen, Taneli
Talvitie, Jukka
Brihuega, Alberto
Uusitalo, Mikko A.
Valkama, Mikko
IEEE
13.09.2021
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202202252155
https://urn.fi/URN:NBN:fi:tuni-202202252155
Kuvaus
Peer reviewed
Tiivistelmä
In this paper, we propose a machine learning (ML) based physical layer receiver solution for demodulating OFDM signals that are subject to a high level of nonlinear distortion. Specifically, a novel deep learning based convolutional neural network receiver is devised, containing layers in both time- and frequency domains, allowing to demodulate and decode the transmitted bits reliably despite the high error vector magnitude (EVM) in the transmit signal. Extensive set of numerical results is provided, in the context of 5G NR uplink incorporating also measured terminal power amplifier characteristics. The obtained results show that the proposed receiver system is able to clearly outperform classical linear receivers as well as existing ML receiver approaches, especially when the EVM is high in comparison with modulation order. The proposed ML receiver can thus facilitate pushing the terminal power amplifier (PA) systems deeper into saturation, and thereon improve the terminal power-efficiency, radiated power and network coverage.
Kokoelmat
- TUNICRIS-julkaisut [18987]