Abstract
Innovative wireless technology trends and applications have attracted an incredible number of users resulting in the massive utilization of the unlicensed ISM bands. In order to accommodate the existing ISM users and to ensure optimal spectrum sharing amongst heterogeneous wireless technologies, spectrum awareness would be of keen importance in identifying concurrent transmission and subsequently applying suitable interference mitigation techniques to ensure coexistence and prevent communication blackout. Our work uses deep learning to identify the presence of WSN, WiFi and Bluetooth single-label signals. Furthermore, we aim to identify multi-label concurrent signal transmissions that are significant in the context of interference management. The experimental results show that the proposed approach yields an average classification accuracy of up to 99.9% and 99.4% for single-label and multi-label signal classification respectively. Moreover, we investigated the effect of data representations (raw data and image data), time–frequency signal representations (spectrogram and Fourier synchrosqueezed transform), color space (RGB images and grayscale images) and various deep learning models for signal classification.
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Acknowledgements
The authors would like to acknowledge Schmidt et al.[21] for sharing the CRAWDAD owl/interference dataset.
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Glossary
- WSN
-
Wireless sensor networks
- Single-label signal
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Radio samples in which one signal is present at a time
- Multi-label signal/Mixture Signal
-
Radio samples in which multiple concurrent signals are present at a time
- WII
-
Wireless interference identification
- WTR
-
Wireless technology recognition
- TFR
-
Time–frequency representation/spectral plot
- STFT
-
Short Time fourier transform
- Spectrogram
-
STFT based spectral plot
- FSST
-
Fourier synchrosqueezing transform
- CNN
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Convolutional neural networks
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Hasan, A., Khan, B.M. Deep learning aided wireless interference identification for coexistence management in the ISM bands. Wireless Netw 29, 3311–3331 (2023). https://doi.org/10.1007/s11276-023-03389-3
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DOI: https://doi.org/10.1007/s11276-023-03389-3