Analytical and Experimental Performance Analysis of Enhanced Wake-Up Receivers Based on Low-Power Base-Band Amplifiers

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Authors

With the introduction of Internet of Things (IoT) technology in several sectors, wireless, reliable, and energy-saving communication in distributed sensor networks are more important than ever. Thereby, wake-up technologies are becoming increasingly important as they significantly contribute to reducing the energy consumption of wireless sensor nodes. In an indoor environment, the use of wireless sensors, in general, is more challenging due to signal fading and reflections and needs, therefore, to be critically investigated. This paper discusses the performance analysis of wakeup receiver (WuRx) architectures based on two low frequency (LF) amplifier approaches with regard to sensitivity, power consumption, and package error rate (PER). Factors that affect systems were compared and analyzed by analytical modeling, simulation results, and experimental studies with both architectures. The developed WuRx operates in the 868 MHz band using on-off-keying (OOK) signals while supporting address detection to wake up only the targeted network node. By using an indoor setup, the signal strength and PER of received signal strength indicator (RSSI) in different rooms and distances were determined to build a wireless sensor network. The results show a wake-up packets (WuPts) detection probability of about 90% for an interior distance of up to 34 m.

Original languageEnglish
Article number2169
JournalSensors
Volume22
Issue number6
Number of pages24
ISSN1424-8239
DOIs
Publication statusPublished - 10.03.2022
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgments: We acknowledge support by the Open Access Publication Funds of the Leipzig University of Applied Sciences.

Funding Information:
This research was funded by European Union Social Fund grant number K-7531.20/496-11 and financially supported by Leipzig University of Applied Sciences by funds of S?chsisches Staatsministerium f?r Wissenschaft, Kultur und Tourismus.

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

    Research areas

  • Envelope detector, Operational amplifier, Passive RF architecture, Performance, Schottky diode, Transistor, Ultra low-power design, Wake-up receiver (WuRx)
  • Engineering

DOI

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