Abstract
Designing a mobile retro-reflective visible light communication (R-VLC) system presents significant challenges due to the rapid and substantial changes in uplink channel gain. These changes occur when the retro-reflective tag, crucial for the system's operation, is worn by a person in motion. Consider a scenario where an intelligent rescue drone is leading the assisted-escape for miners trapped due to an accident. The drone, equipped with a searchlight, facilitates duplex communication with the trapped miners via a batteryless R-VLC system. Despite the retro-reflective tag's unique ability to support self-alignment in the VLC system, the tag's orientation changes quickly as a miner moves. This movement induces significant variations in the uplink channel gain, which requires a fast adaptive modulation and coding scheme. In response to this challenge, our work involves prototyping an R-VLC system powered by photovoltaic cells. Based on Manchester-coded on-off keying, the communication distance achieves up to 6 meters. Through channel characterization and experimental validation, we demonstrate that the prototype can leverage the downlink photovoltaic cell sensing output to directly estimate the strength of the uplink retro-reflected signal. The symmetry between downlink and uplink allows for symbol-wise adaptation, crucial for effective sensing-assisted communication.
Original language | English |
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Title of host publication | 2024 IEEE International Conference on Communications Workshops, ICC Workshops 2024 |
Editors | Matthew Valenti, David Reed, Melissa Torres |
Pages | 1061-1066 |
Number of pages | 6 |
ISBN (Electronic) | 9798350304053 |
DOIs | |
State | Published - 2024 |
Event | 59th Annual IEEE International Conference on Communications Workshops, ICC Workshops 2024 - Denver, United States Duration: Jun 9 2024 → Jun 13 2024 |
Publication series
Name | 2024 IEEE International Conference on Communications Workshops, ICC Workshops 2024 |
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Conference
Conference | 59th Annual IEEE International Conference on Communications Workshops, ICC Workshops 2024 |
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Country/Territory | United States |
City | Denver |
Period | 6/9/24 → 6/13/24 |
Bibliographical note
Publisher Copyright:© 2024 IEEE.
Keywords
- Sensing-assisted communication
- backscatter communication
- battery-free
- drone-assisted mine rescue
- mobility
- visible light communication
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Control and Optimization
- Artificial Intelligence
- Computer Networks and Communications
- Computer Science Applications
- Signal Processing
- Information Systems and Management
- Renewable Energy, Sustainability and the Environment