Federated Learning for 5G Radio Spectrum Sensing

Spectrum sensing (SS) is an important tool in finding new opportunities for spectrum sharing. The users, called Secondary Users (SU), who do not have a license to transmit without hindrance, need to employ SS in order to detect and use the spectrum without interfering with the licensed users’ (prima...

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Main Authors: Małgorzata Wasilewska, Hanna Bogucka, Adrian Kliks
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/1/198
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author Małgorzata Wasilewska
Hanna Bogucka
Adrian Kliks
author_facet Małgorzata Wasilewska
Hanna Bogucka
Adrian Kliks
author_sort Małgorzata Wasilewska
collection DOAJ
description Spectrum sensing (SS) is an important tool in finding new opportunities for spectrum sharing. The users, called Secondary Users (SU), who do not have a license to transmit without hindrance, need to employ SS in order to detect and use the spectrum without interfering with the licensed users’ (primary users’ (PUs’)) transmission. Deep learning (DL) has proven to be a good choice as an intelligent SS algorithm that considers radio environmental factors in the decision-making process. It is impossible though for SU to collect the required data and train complex DL models. In this paper, we propose to employ a Federated Learning (FL) algorithm in order to distribute data collection and model training processes over many devices. The proposed method categorizes FL devices into groups by their mean Signal-to-Noise ratio (SNR) and creates a common DL model for each group in the iterative process. The results show that detection accuracy obtained via the FL algorithm is similar to detection accuracy obtained by employing several DL models, namely convolutional neural networks (CNNs), specialized in spectrum detection for a PU signal with a given mean SNR value. At the same time, the main goal of simplification of the SS process in the network is achieved.
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spelling doaj.art-d5c3ed28eeda4433b542b70b2fd142862023-11-23T12:18:27ZengMDPI AGSensors1424-82202021-12-0122119810.3390/s22010198Federated Learning for 5G Radio Spectrum SensingMałgorzata Wasilewska0Hanna Bogucka1Adrian Kliks2Institute of Radiocommunications, Poznan University of Technology, 61-131 Poznań, PolandInstitute of Radiocommunications, Poznan University of Technology, 61-131 Poznań, PolandInstitute of Radiocommunications, Poznan University of Technology, 61-131 Poznań, PolandSpectrum sensing (SS) is an important tool in finding new opportunities for spectrum sharing. The users, called Secondary Users (SU), who do not have a license to transmit without hindrance, need to employ SS in order to detect and use the spectrum without interfering with the licensed users’ (primary users’ (PUs’)) transmission. Deep learning (DL) has proven to be a good choice as an intelligent SS algorithm that considers radio environmental factors in the decision-making process. It is impossible though for SU to collect the required data and train complex DL models. In this paper, we propose to employ a Federated Learning (FL) algorithm in order to distribute data collection and model training processes over many devices. The proposed method categorizes FL devices into groups by their mean Signal-to-Noise ratio (SNR) and creates a common DL model for each group in the iterative process. The results show that detection accuracy obtained via the FL algorithm is similar to detection accuracy obtained by employing several DL models, namely convolutional neural networks (CNNs), specialized in spectrum detection for a PU signal with a given mean SNR value. At the same time, the main goal of simplification of the SS process in the network is achieved.https://www.mdpi.com/1424-8220/22/1/198spectrum sensingmachine learning5GLTEfederated learningconvolutional neural network
spellingShingle Małgorzata Wasilewska
Hanna Bogucka
Adrian Kliks
Federated Learning for 5G Radio Spectrum Sensing
Sensors
spectrum sensing
machine learning
5G
LTE
federated learning
convolutional neural network
title Federated Learning for 5G Radio Spectrum Sensing
title_full Federated Learning for 5G Radio Spectrum Sensing
title_fullStr Federated Learning for 5G Radio Spectrum Sensing
title_full_unstemmed Federated Learning for 5G Radio Spectrum Sensing
title_short Federated Learning for 5G Radio Spectrum Sensing
title_sort federated learning for 5g radio spectrum sensing
topic spectrum sensing
machine learning
5G
LTE
federated learning
convolutional neural network
url https://www.mdpi.com/1424-8220/22/1/198
work_keys_str_mv AT małgorzatawasilewska federatedlearningfor5gradiospectrumsensing
AT hannabogucka federatedlearningfor5gradiospectrumsensing
AT adriankliks federatedlearningfor5gradiospectrumsensing