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Wireless trigger distribution with nanosecond jitter based on ultra-wideband transceiver modules.

Julius Korsimaa1, Martin Weber1, Edward Hæggström1

  • 1Electronics Research Laboratory, Department of Physics, University of Helsinki, P.O.B. 64, FI-00014 University of Helsinki, Finland.

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|October 27, 2025
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Summary

This study introduces an ultra-wideband system for precise time synchronization in wireless sensor networks, overcoming limitations of Global Navigation Satellite System (GNSS) receivers for indoor and underground applications.

Keywords:
Industry 4.0Internet of Things (IoT)RangingSensor networkSynchronizationTriggeringUltra-wideband

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Area of Science:

  • Electrical Engineering
  • Computer Science
  • Network Engineering

Background:

  • Wireless sensor networks (WSNs) require precise time synchronization for coordinated operation.
  • Global Navigation Satellite System (GNSS) offers nanosecond accuracy but has limitations like sky-view dependency and susceptibility to interference.
  • Existing synchronization methods may not be suitable for all environments or applications due to infrastructure or signal constraints.

Purpose of the Study:

  • To propose and evaluate a novel trigger signal distribution system for time synchronization in WSNs.
  • To overcome the limitations of GNSS for indoor/underground WSN synchronization.
  • To achieve high-accuracy time synchronization using ultra-wideband technology.

Main Methods:

  • Utilized the DWM1000 IEEE 802.15.4-2011 ultra-wideband (UWB) transceiver module.
  • Configured a network of UWB modules to wirelessly distribute trigger signals.
  • Tested the system's performance in coordinating signal transmission and reception within a WSN.

Main Results:

  • Achieved a typical timing jitter of less than ±4 nanoseconds for the distributed trigger signals.
  • Demonstrated the system's capability to coordinate signal transmission and reception in a WSN.
  • Validated the effectiveness of the UWB-based approach for high-accuracy synchronization.

Conclusions:

  • The proposed UWB trigger signal distribution system provides a viable alternative to GNSS for precise time synchronization in WSNs.
  • This method is suitable for applications requiring nanosecond-level accuracy, including indoor/underground environments.
  • The system effectively coordinates WSN operations, showing promise for structural health monitoring and similar applications.