Delay-Doppler Multiplexing With Global Filtering
Citation:
Jialiang Zhu and Mohsen Bayat and Arman Farhang, Delay-Doppler Multiplexing With Global Filtering, IEEE Wireless Communications and Networking Conference, Milan, Italy, 24-27 March 2025, 2025Download Item:
Abstract:
This paper proposes a novel modulation technique
called globally filtered orthogonal time frequency space (GF-
OTFS) which integrates single-carrier frequency division multiple
access (SC-FDMA)-based delay-Doppler representation with universal filtered multi-carrier (UFMC) modulation. Our proposed
technique first arranges the frequency-Doppler bins of an orthogonal time frequency space (OTFS) frame in adjacency using
SC-FDMA and then applies universal filtering to the neighboring
signals to mitigate inter-Doppler interference (IDI). By employing
this approach, GF-OTFS achieves superior spectral containment
and effectively mitigates interference caused by Doppler shifts in
dynamic, time-varying channels. This paper also presents a de-
tailed mathematical formulation of the proposed modulation tech-
nique. Furthermore, a comprehensive performance evaluation is
conducted, comparing our GF-OTFS approach to state-of-the-art
techniques, including Doppler-resilient UFMC (DR-UFMC) and
receiver windowed OTFS (RW-OTFS). Key performance metrics,
such as bit error rate (BER) and out-of-band (OOB) emissions,
as well as the Doppler spread reduction are analyzed to assess
the effectiveness of each approach. The results indicate that our
proposed technique achieves comparable BER performance while
significantly improving spectral containment.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
21/US/3757
Science Foundation Ireland (SFI)
19/FFP/7005(T)
Science Foundation Ireland (SFI)
18/CRT/6222
Author's Homepage:
http://people.tcd.ie/afarhang
Author: Farhang, Arman
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IEEE Wireless Communications and Networking ConferenceType of material:
Conference PaperAvailability:
Full text availableSubject (TCD):
Telecommunications , Signal Processing , TELECOMMUNICATIONSSource URI:
https://doi.org/10.48550/arXiv.2501.13793Metadata
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