An optimized design of a sparse code multiple access (SCMA) codebook for uplink wireless
communications is presented by dividing an optimized 16-point round quadrature amplitude …

Fifth generation (5G) communication networks can achieve high spectral efficiency using
sparse code multiple access (SCMA) scheme when large number of users are trying to …

Recent advances in the communication systems culminated in a new class of multiple
access schemes, named non-orthogonal multiple access (NOMA), where the main goal is to …

Starting with an overview of current research progresses on multiple access technology, the
book then presents the theoretical fundamentals, technical principles, transmission scheme …

In this paper, downlink RESOURCE ALLOCATION for a sparse code multiple access
(SCMA) based heterogeneous cellular networks (HCN) is investigated. The main aim of this …

Abstract Systems and methods for DFT-S-SCMA (discrete Fourier Transform-spread-sparse
code multiple access) are provided. Input bits are encoded with an SCMA encoder. The …

The main objective of this paper is to show the performance of the non-orthogonal multiple
access scheme named sparse code multiple access (SCMA) when it is applied in a non …

Multiple access is a technique to implement multi-user communications by letting multiple
users share one common channel, and it is one of the core physical layer techniques in …

(57) ABSTRACT A two-phase approach to machine-type communications is provided. In a
first phase, for activity detection, at least one symbol is transmitted using a long signature …