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arXiv · 2210.01786

Coordinate Interleaved Faster-than-Nyquist Signaling

Adem Cicek·Enver Cavus·Ebrahim Bedeer·Ian Marsland·Halim Yanikomeroglu
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Abstract

Faster-than-Nyquist (FTN) signaling is an attractive transmission technique which accelerates data symbols beyond the Nyquist rate to improve the spectral efficiency; however, at the expense of higher computational complexity to remove the introduced intersymbol interference (ISI). In this work, we introduce a novel FTN signaling transmission technique, named coordinate interleaved FTN (CI-FTN) signaling that exploits the ISI at the transmitter to generate constructive interference for every pair of the counter-clockwise rotated binary phase shift keying (BPSK) data symbols. In particular, the proposed CI- FTN signaling interleaves the in-phase (I) and the quadrature (Q) components of the counter-clockwise rotated BPSK symbols to guarantee that every pair of consecutive symbols has the same sign, and hence, has constructive ISI. At the receiver, we propose a low-complexity detector that makes use of the constructive ISI introduced at the transmitter. Simulation results show the merits of the CI-FTN signaling and the proposed low-complexity detector compared to conventional Nyquist and FTN signaling.

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Adem Cicek, Enver Cavus, Ebrahim Bedeer, Ian Marsland, Halim Yanikomeroglu. 2022-10-04. Coordinate Interleaved Faster-than-Nyquist Signaling. https://arxiv.org/abs/2210.01786

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