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This demonstration presents LiTEfoot, an ultra-low power localization system leveraging ambient cellular signals. To address the limitations of traditional GPS-based tracking systems in terms of power consumption and latency, LiTEfoot employs a non-linear transformation of the cellular spectrum to achieve efficient self-localization. Our design uses a simple envelope detector to realize spectrum folding, enabling the identification of multiple active base stations.
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This content will become publicly available on November 4, 2025
Poster: Wideband Cellular Sensing for Real-time, Sustainable Geo-localization Tags
This paper presents LiTEfoot, an ultra-low power, wide-area localization system leveraging ambient cellular signals to address the limitations of traditional self-localization systems in terms of power consumption and latency. LiTEfoot uses a non-linear transformation of the cellular synchronization signal to efficiently achieve self-localization by systematically superimposing signals at the baseband. A simple envelope detector is used to realize this non-linear transformation, enabling the identification of multiple active base stations across any cellular band. The system is designed to operate with low power, consuming only 40 𝜇Joules of energy per localization update, achieving a median localization error of 22 meters in urban areas.
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- Award ID(s):
- 2238433
- PAR ID:
- 10589168
- Publisher / Repository:
- ACM
- Date Published:
- ISBN:
- 9798400706974
- Page Range / eLocation ID:
- 811 to 813
- Format(s):
- Medium: X
- Location:
- Hangzhou China
- Sponsoring Org:
- National Science Foundation
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