Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM

Power domain non-orthogonal multiple access (PD-NOMA) is one of the most perspective multiplexing technologies that allows improving the capacity of actual networks. Unlike orthogonal multiple access (OMA), the PD-NOMA non-orthogonally schedules multiple users in the power domain in the same orthogo...

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Autores principales:	Yakov V. Kryukov, Dmitriy A. Pokamestov, Serafim A. Novichkov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	NOMA OMA PD-NOMA QAM BER SER Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/29b1a0bd09274801bff0b30baf172b5b
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spelling	oai:doaj.org-article:29b1a0bd09274801bff0b30baf172b5b2021-11-25T19:07:10ZSymbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM10.3390/sym131121532073-8994https://doaj.org/article/29b1a0bd09274801bff0b30baf172b5b2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/2153https://doaj.org/toc/2073-8994Power domain non-orthogonal multiple access (PD-NOMA) is one of the most perspective multiplexing technologies that allows improving the capacity of actual networks. Unlike orthogonal multiple access (OMA), the PD-NOMA non-orthogonally schedules multiple users in the power domain in the same orthogonal time-spectrum resource segment. Thus, a non-orthogonal multiplexed signal is a combination of several user signals (usually, modulation and coding schemes (MCS) based on quadrature amplitude modulation) with different power weights. The symbol error rate (SER) and bit error rate (BER) performances are one of the main quality characteristics of any commutation channel. The issue is that a known analytical expression for BER and SER calculation for conventional OMA cannot be applied in terms of the PD-NOMA. In the following work, we have derived the SER and BER analytical expressions for gray-coded square quadrature amplitude modulation (QAM) user channels that are transmitted in two-user PD-NOMA channel under additive white Gaussian noise (AWGN). Through the simulation, the verification of the provided expressions is presented for four multiplexing configurations with various user power weights and QAM order combinations.Yakov V. KryukovDmitriy A. PokamestovSerafim A. NovichkovMDPI AGarticleNOMAOMAPD-NOMAQAMBERSERMathematicsQA1-939ENSymmetry, Vol 13, Iss 2153, p 2153 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	NOMA OMA PD-NOMA QAM BER SER Mathematics QA1-939
spellingShingle	NOMA OMA PD-NOMA QAM BER SER Mathematics QA1-939 Yakov V. Kryukov Dmitriy A. Pokamestov Serafim A. Novichkov Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
description	Power domain non-orthogonal multiple access (PD-NOMA) is one of the most perspective multiplexing technologies that allows improving the capacity of actual networks. Unlike orthogonal multiple access (OMA), the PD-NOMA non-orthogonally schedules multiple users in the power domain in the same orthogonal time-spectrum resource segment. Thus, a non-orthogonal multiplexed signal is a combination of several user signals (usually, modulation and coding schemes (MCS) based on quadrature amplitude modulation) with different power weights. The symbol error rate (SER) and bit error rate (BER) performances are one of the main quality characteristics of any commutation channel. The issue is that a known analytical expression for BER and SER calculation for conventional OMA cannot be applied in terms of the PD-NOMA. In the following work, we have derived the SER and BER analytical expressions for gray-coded square quadrature amplitude modulation (QAM) user channels that are transmitted in two-user PD-NOMA channel under additive white Gaussian noise (AWGN). Through the simulation, the verification of the provided expressions is presented for four multiplexing configurations with various user power weights and QAM order combinations.
format	article
author	Yakov V. Kryukov Dmitriy A. Pokamestov Serafim A. Novichkov
author_facet	Yakov V. Kryukov Dmitriy A. Pokamestov Serafim A. Novichkov
author_sort	Yakov V. Kryukov
title	Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
title_short	Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
title_full	Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
title_fullStr	Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
title_full_unstemmed	Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM
title_sort	symbol error-rate analytical expressions for a two-user pd-noma system with square qam
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/29b1a0bd09274801bff0b30baf172b5b
work_keys_str_mv	AT yakovvkryukov symbolerrorrateanalyticalexpressionsforatwouserpdnomasystemwithsquareqam AT dmitriyapokamestov symbolerrorrateanalyticalexpressionsforatwouserpdnomasystemwithsquareqam AT serafimanovichkov symbolerrorrateanalyticalexpressionsforatwouserpdnomasystemwithsquareqam
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Symbol Error-Rate Analytical Expressions for a Two-User PD-NOMA System with Square QAM

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