Time Frequency Localized Pulse for Delay Doppler Domain Data Transmission

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2025Access:
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Sanoopkumar P. S and Muyiwa Balogun and Liam Barry and Arman Farhang, Time Frequency Localized Pulse for Delay Doppler Domain Data Transmission, IEEE Wireless Communications and Networking Conference, Milan, Italy, 24-27 March 2025, 2025Abstract:
Orthogonal time frequency space (OTFS) is a strong
candidate waveform for sixth generation wireless communication
networks (6G), which can effectively handle time varying wireless
channels. In this paper, we analyze the effect of fractional delay in
delay Doppler (DD) domain multiplexing techniques. We develop
a vector-matrix input-output relationship for the DD domain data
transmission system by incorporating the effective pulse shaping
filter between the transmitter and receiver along with the channel.
Using this input-output relationship, we analyze the effect of the
pulse shaping filter on the channel estimation and BER performance in the presence of fractional delay and uncompensated
fractional timing offset (TO). For the first time, we propose the
use of time-frequency localized (TFL) pulse shaping for the OTFS
waveform to overcome the interference due to fractional delays.
We show that our proposed TFL-OTFS outperforms the widely
used raised cosine pulse-shaped OTFS (RC-OTFS) in the presence
of fractional delays. Additionally, TFL-OTFS also shows very high
robustness against uncompensated fractional TO, compared to
RC-OTFS.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
21/US/3757
Science Foundation Ireland (SFI)
19/FFP/7005(T)
Author's Homepage:
http://people.tcd.ie/afarhang
Author: P. S, Sanoopkumar; Farhang, Arman
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IEEE Wireless Communications and Networking ConferenceType of material:
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Full text availableSubject (TCD):
Telecommunications , Signal Processing , TELECOMMUNICATIONSSource URI:
https://arxiv.org/abs/2501.18286Metadata
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