Optimized Pilot Design for OTFS Modulation in Underwater Acoustic Communications
conference paper
This paper explores the selection of orthogonal timefrequency-space (OTFS) modulation parameters for underwater acoustic communication channels. It presents the first results of a new, recently formulated pilot allocation and power distribution
strategy for OTFS modulation. The strategy can be adjusted in a simple way to the delay and Doppler spread in the channel. The
proposed OTFS system is compared to a conventional decisionfeedback equalizer (DFE) system in a realistic simulation based
on a measured channel, with challenging delay and Doppler spreads. The OTFS system demonstrates a clear advantage over
the DFE when operating at lower bandwidth efficiencies. Index Terms—OTFS, pilot design, underwater acoustic communications,
decision-feedback equalizer (DFE).
strategy for OTFS modulation. The strategy can be adjusted in a simple way to the delay and Doppler spread in the channel. The
proposed OTFS system is compared to a conventional decisionfeedback equalizer (DFE) system in a realistic simulation based
on a measured channel, with challenging delay and Doppler spreads. The OTFS system demonstrates a clear advantage over
the DFE when operating at lower bandwidth efficiencies. Index Terms—OTFS, pilot design, underwater acoustic communications,
decision-feedback equalizer (DFE).
TNO Identifier
1002508
Source title
Underwater Communications and Networking Conference (3-5 september 2024, Sestri Levante, Italië).
Files
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