Tytuł:

CG-SCMA Codebook Design Based on Maximized Euclidian Distance, Journal of Telecommunications and Information Technology, 2023, nr 1

Tytuł publikacji grupowej:

2023, nr 1, JTIT-artykuły

Autor:

Abdullah, Hikmat N. ; Mohamed, Sura S.

Temat i słowa kluczowe:

codebook ; sparse code ; MPA ; Euclidian distance ; multiple access

Opis:

Sparse code multiple access (SCMA) is a multi-dimensional codebook based on a class of non-orthogonal multiple access (NOMA) technologies enabling the delivery of non-orthogonal resource elements to numerous users in 5G wireless communications without increasing complexity. This paper proposes a computer-generated sparse code multiple access (CG-SCMA) technique, where the minimum Euclidian distance (MED) of a star 16-point quadrature amplitude modulation is maximized by CG-SCMA, thus creating a complex SCMA codebook based on optimizing the difference between the first and other radiuses over rotated constellations. To specify the most suitable values for this constellation, it is divided into four sub-constellations using trellis coded modulation (TCM) in an effort to optimize MED. The new codebook has four sub-constellations with MED values of 3.85, 2.26, 2.26, and 3.85, respectively. Application of the message passing algorithm (MPA) ensures low complexity of the decoding process

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Data wydania:

2023, nr 1

Typ zasobu:

artykuł

Format:

application/pdf

Identyfikator zasobu:

ISSN 1509-4553, on-line: ISSN 1899-8852

DOI:

10.26636/jtit.2023.168122

eISSN:

1899-8852

Źródło:

Journal of Telecommunications and Information Technology

Język:

ang

Prawa:

Biblioteka Naukowa Instytutu Łączności