Study Finds OTFS Can Dramatically Cut Channel Training Costs in High-Mobility Networks

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OTFS significantly reduces channel training overhead in doubly-dispersive channels, outperforming OFDM as Doppler and delay effects increase.
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OTFS leverages delay-Doppler domain sparsity to reduce channel training overhead, mitigate aliasing and ISCI, and offer higher spectral efficiency than OFDM in fast-varying, doubly-dispersive wireless channels.