Doppler Shift Compensation Assisted by RIS Systems in High-Mobility Communications

The Doppler shift in the signal frequency caused by the relative movement of the receiver is considered to be detrimental for communication systems. Although this problem has been studied extensively, it is still relevant given the renewed interest on high-mobility communications. On the other hand,...

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Bibliographic Details
Published in:IEEE communications letters 2024-11, Vol.28 (11), p.2658-2662
Main Authors: C. de Souza, Pedro H., Mendes, Luciano
Format: Article
Language:English
Subjects:
Channel capacity
Channel estimation
Communications systems
Doppler effect
Doppler shift
frequency shift
high-mobility
Indexes
OFDM
Receivers
Reconfigurable intelligent surfaces
RIS
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Summary:The Doppler shift in the signal frequency caused by the relative movement of the receiver is considered to be detrimental for communication systems. Although this problem has been studied extensively, it is still relevant given the renewed interest on high-mobility communications. On the other hand, novel solutions such as the reconfigurable intelligent surface (RIS) can be repurposed for tackling the Doppler shift in high-mobility communication systems. Despite not being its usual primary goal, we show in this work that the RIS can compensate the Doppler shift at a small cost in performance.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2024.3466562