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Journal Articles IEEE Communications Letters Year : 2023

SNR-Optimal Spreading Sequences for Chip-Wise Faster-than-Nyquist Signaling

Abstract

This letter proposes signal-to-noise ratio (SNR)-optimal spreading sequences for faster-than-Nyquist (FTN) transmission. The peculiar association of direct sequence spread spectrum with FTN proves relevant to mitigate noticeable cyclostationary features, leading up to covert communications schemes. Considering a matched-filter-based receiver, the proposed SNR-optimal spreading sequences and their closed-form approximations outperform traditional pseudo-random noise sequences by achieving near-interference-free bit-error-probability. Our results pave the way for the design of FTN-specific multiple access techniques while ensuring a low probability of detection/intercept.
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Dates and versions

hal-04086281 , version 1 (01-05-2023)

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Damien Roque, Charly Poulliat. SNR-Optimal Spreading Sequences for Chip-Wise Faster-than-Nyquist Signaling. IEEE Communications Letters, 2023, 27 (6), pp.1594-1598. ⟨10.1109/LCOMM.2023.3265070⟩. ⟨hal-04086281⟩
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