IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Proposal of terrestrial-device wake-up signal transmission method with Doppler variation pre-compensation on IoT platform via LEO satellite
Kazumitsu SakamotoKouhei SuzakiYohei KatayamaYosuke FujinoKenji Suzuki
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JOURNAL FREE ACCESS

2023 Volume 12 Issue 1 Pages 30-35

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Abstract

Regarding the waking up of terrestrial Internet of Things devices via a low Earth orbit satellite downlink signal, it is difficult to demodulate the wake-up signal received by such devices that are directly below a satellite due to Doppler variation caused by the satellite’s high-speed movement. This letter proposes a device wake-up signal transmission method for reducing the effect of Doppler shift variation on a device’s receive signal by adding frequency variation to the wake-up signals that cancels out the Doppler variation and transmitting the signal in downlink. Computer simulations showed that the proposed method enables the waking up of devices directly below a satellite.

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© 2023 The Institute of Electronics, Information and Communication Engineers
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