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Turbo Demodulation Algorithm for NOMA Systems

  • THEORY AND METHODS OF INFORMATION PROCESSING
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Abstract

Recently, developers of future generation communication systems have shown great interest in nonorthogonal multiple access (NOMA) technology, which shows promises of a significant increase in the spectral efficiency and capacity of such systems. Communication systems using NOMA technology belong to the class of so-called overloaded systems (in contrast to OMA systems), since the number of users in them significantly exceeds the number of orthogonal resources. The price for increasing the number of users due to the non-orthogonality of signals is a significant increase in the complexity of processing user group signals. This article discusses well-known reception algorithms with different complexity and proposes a new, less complex demodulator that takes into account the discrete nature of NOMA signals and uses sequential turbo processing.

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Funding

This work was supported by the Ministry of Digital Development, Communications, and Mass Media of the Russian Federation, state contract no. P33-1-26/8, Development of a New Technology of NOMA and its Use Together with MIMO Technology for advanced 6G Communication Systems (code “MIMO-NOMA”), dated February 26, 2021.

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Authors and Affiliations

  1. Moscow Technical University of Communications and Informatics, 111024, Moscow, Russia

    M. G. Bakulin, T. B. K. Ben Rejeb, V. B. Kreyndelin, D. Yu. Pankratov & A. E. Smirnov

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  1. M. G. Bakulin
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  2. T. B. K. Ben Rejeb
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  3. V. B. Kreyndelin
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  4. D. Yu. Pankratov
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  5. A. E. Smirnov
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Correspondence to M. G. Bakulin, T. B. K. Ben Rejeb, V. B. Kreyndelin, D. Yu. Pankratov or A. E. Smirnov.

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The authors declare that they have no conflicts of interest.

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Translated by E. Chernokozhin

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Bakulin, M.G., Ben Rejeb, T.B., Kreyndelin, V.B. et al. Turbo Demodulation Algorithm for NOMA Systems. J. Commun. Technol. Electron. 67 (Suppl 2), S255–S266 (2022). https://doi.org/10.1134/S1064226922140017

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