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In-Band Full-Duplex FSK transceiver for IoT

  • Mohammed El Khattabi ORCID logo EMAIL logo , Mohammed Khaldoun , Jelloul Elmesbahi und Ahmed Errami
Veröffentlicht/Copyright: 20. April 2021
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Abstract

A wireless frequency shift keying (FSK) transceiver that can simultaneously transmit and receive over the same radio channel using a novel complex baseband technique is introduced. The proposed design combines a traditional FSK modulator with a new frame-based demodulation technique able to recover data without using traditional cancellation techniques. Self Interference (SI) level has no impact on demodulation and can be ignored. The mathematical equations are detailed and validated by simulation. The implementation through software defined radio (SDR) using Ettus B210 USRP and GNU Radio proves that the system works properly and enables the In-Band Full-Duplex (IBFD) for FSK. An example of one single hope real-world IBFD communication is presented. Energy efficiency and System performances have been also evaluated using the bit error rate (BER) curve and discussed. The proposed technique enhances the spectral efficiency by factor 2 and seems very useful for low-rate applications such many internet of things (IoT) devices.


Corresponding author: Mohammed El Khattabi, NEST Research Group, LRI Laboratory E.N.S.E.M, Hassan II University, Route d’El Jadida, km 7, BP: 8118, Oasis, Casablanca, Morocco, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-11-30
Accepted: 2021-04-07
Published Online: 2021-04-20
Published in Print: 2021-10-26

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Heruntergeladen am 30.10.2025 von https://www.degruyterbrill.com/document/doi/10.1515/freq-2020-0208/pdf?lang=de
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