Time Synchronization for Sustainable Wireless Networks
CFOSynt: Carrier Frequency Offset Assisted Clock Syntonization for Wireless Sensor Networks
Overview
In this project, a timestamp-free syntonization technique, CFOSynt, is designed utilizing carrier frequency offset (CFO). This work was published in IEEE INFOCOM 2017 and presented at IEEE INFOCOM 2017 demo session.
Testbed Design
A testbed was designed to enable scalable ground-truth measurement of clock frequencies and CFO. A detailed description can be found in the IEEE INFOCOM 2017 demo.
Key components of this testbed include:
- WizziMote, TI CC430-based sensor node.
- Keysight N9912A spectrum analyzer: for carrier frequency and RF clock measurement.
- Ettus OctoClock clock distribution module: for scalable clock skew measurement.
- Tektronix MSO3000 oscilloscope: for clock signal measurement.
Testbed: top view
Testbed: back view
Experiment Design
1. Validation experiment
We validate the idea of CFOSynt through ground-truth measurements and analyses using our testbed. For detailed descriptions of the experiments, please refer to the INFOCOM paper.
2. Evaluation experiment
To be updated.
Data & Code [Download]
1. Validation experiment data and processing code
Please see the readme file in corresponding folders for descriptions.
2. CFOSynt sensor implementation: Github
3. Evaluation data and code
To be updated.
Demo
Demo at IEEE INFOCOM 2017
Correlation-based Time Synchronization in the Internet of Things
To be updated.
Optimal Synchronization Scheduling
To be updated.
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