Vol. 14, no.4, 2022


Performance comparison of decoders of non-orthogonal multiple access signals considering modulation and coding schemes from LTE networks

Yakov V. Kryukov, Dmitry A. Pokamestov, Andrey A. Brovkin, Evgeny V. Rogozhnikov

Tomsk State University of Control Systems and Radioelectronics, https://tusur.ru/
Tomsk 634050, Russian Federation
E-mail: kryukov.tusur@gmail.com, dmaltomsk@mail.ru, soldierbrovkin@gmail.com, udzhon@mail.ru/i>

Received August 12, 2022, peer-reviewed August 19, 2022, accepted August 26, 2022

Abstract:: A comparative analysis of the performance of SL-SIC (Symbol Level - Serial Interference Cancellation) and CWL-SIC (Codeword Level-SIC) decoders of PD-NOMA (Power Doman - Non-Orthogonal Multiple Access) baseband signals in a system with two users is presented. Real signal code constructs (SCC) from the 3GPP LTE (Long Term Evolution of 3rd Generation Partnership Project) communication standard are used. The performance of CWL-SIC achievable in practice in real systems for all possible designs of a group PD-NOMA signal consisting of different pair combinations of noise-immune SCCs has been obtained. With the help of mathematical modeling, weighting power coefficients are obtained that provide the maximum average performance of the group signal for two user channels. The high efficiency of the CWL-SIC and the expediency of its use in real systems, especially in conditions of low signal-to-noise ratio, are shown.

Keywords: access power domain, interference cancellation at the level of modulation symbols and at the level of code word, signal-to-noise ratio, bit error rate, quadrature amplitude modula-tion, modulation and coding schemes

UDC 621.396.4

RENSIT, 2022, 14(4):463-472e DOI: 10.17725/rensit.2022.14.463

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/470/14(4)463-472e.pdf