Power-Domain-Multiplexed Precoded Faster-Than-Nyquist Signaling for NOMA Downlink
Abstract
In this paper, we propose a novel precoded faster-than-Nyquist (FTN) signaling scheme with power-domain-multiplexing in non-orthogonal multiple access (NOMA) downlink for tapping the joint benefits of high spectral efficiency and simultaneous multiuser connectivity. Non-orthogonality is introduced in both the symbol-interval (time) domain as well as in the multiple-access (power) domain to achieve a flexible resource allocation. Eigendecomposition of the FTN-specific intersymbol interference (ISI) matrix is used to achieve efficient cancellation of ISI, while successive interference cancellation is used to eliminate multiuser interference induced by NOMA. We derive the achievable analytical rate bound and demonstrate the numerical results of the bit error rate performance for the proposed scheme.
Keywords
Cite
@article{arxiv.2607.16853,
title = {Power-Domain-Multiplexed Precoded Faster-Than-Nyquist Signaling for NOMA Downlink},
author = {Prakash Chaki and Shinya Sugiura},
journal= {arXiv preprint arXiv:2607.16853},
year = {2026}
}
Comments
6 pages, 6 figures, Preprint (accepted version) for publication in IEEE Global Communications Conference (IEEE GLOBECOM), Rio de Janeiro, Brazil, Dec. 2022, pp. 3977-3982