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Faster-Than-Nyquist Signaling Through Spatio-Temporal Symbol-Level Precoding for the Multiuser MISO Downlink Channel
University of Luxembourg.ORCID iD: 0000-0003-2298-6774
2018 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 17, no 9, p. 5915-5928Article in journal (Refereed) Published
Abstract [en]

This paper deals with the problem of the interference between multiple co-channel transmissions in the downlink of a multi-antenna wireless system. In this framework, symbol-level precoding (SLP) is a promising technique which is able to constructively exploit the multi-user interference and to transform it into useful power at the receiver side. While previous works on SLP were focused on exploiting the multi-user interference, in this paper, we extend this concept by jointly handling the interference both in the spatial dimension (multi-user interference) and in the temporal dimension (inter-symbol interference). Accordingly, we propose a novel precoding method, referred to as spatio-temporal SLP. In this new precoding paradigm, fasterthan-Nyquist (FTN) signaling can be applied over multi-user MISO systems, and the inter-symbol interference can be tackled at the transmitter side, without additional complexity for the user terminals. While applying FTN signaling, the proposed optimization strategies perform a sum power minimization with quality-of-service constraints. Numerical results are presented in a comparative fashion to show the effectiveness of the proposed techniques, which outperform the state-of-the-art SLP schemes in terms of symbol error rate, effective rate, and energy efficiency.

Place, publisher, year, edition, pages
2018. Vol. 17, no 9, p. 5915-5928
Keywords [en]
Interference, precoding, wireless communication, optimization, MISO communication, transmittersk, minimization, symbol-level precoding, constructive interference, multi-antenna system, faster-than-Nyquist, inter-symbol interference
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-258962DOI: 10.1109/TWC.2018.2851249ISI: 000444652500018Scopus ID: 2-s2.0-85049665541OAI: oai:DiVA.org:kth-258962DiVA, id: diva2:1350578
Note

QC 20191029

Available from: 2019-09-11 Created: 2019-09-11 Last updated: 2019-10-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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