Sparse code multiple access (SCMA) is one of the promising candidates for new radio interface. The generation communication system expected to support massive user with high capacity. However, there are numerous problems and barriers achieve optimal performance, e.g., multiuser interference power consumption. In this paper, we present optimization methods enhance spectral energy efficiency SCMA...

It has been a great privilege to participate in this fascinating meeting and a great challenge to be asked to comment on the wide variety of issues that have arisen. I will try to place the papers we have heard here in some perspective and to outline some current and future challenges and opportunities lying in the intersection of statistics and astronomy. I ask the reader to bear in mind that ...

The RcmdrPlugin.SCDA plug-in package is discussed. It integrates three R packages in the R commander interface: SCVA (for Single-Case Visual Analysis), SCRT (for Single-Case Randomization Tests), and SCMA (for Single-Case Meta-Analysis). This way the plug-in package covers three important steps in the analysis of single-case data.

In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines conventional sparse code (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase number users served as compared uses antennas at base station. To end, joint resource allocation problem for MA-H...

Grant-free sparse code multiple access (GF-SCMA) is considered to be a promising candidate for future wireless networks. In this article, we focus on characterizing the performance of uplink GF-SCMA schemes in network with ubiquitous connections, such as Internet-of-Things (IoT) To provide tractable approach evaluate GF-SCMA, first develop theoretical model taking into account property multiuse...

Orthogonal time frequency space (OTFS) has emerged as the most sought-after modulation technique in a high mobility scenario. Sparse code multiple access (SCMA) is an attractive code-domain non-orthogonal (NOMA) technique. Recently NOMA approach for OTFS, named OTFS-SCMA, proposed. OTFS-SCMA promising framework that meets demands of and massive connectivity. This paper presents channel estimati...

Sparse Code Multiple Access (SCMA) is a disruptive code-domain non-orthogonal multiple access (NOMA) scheme to enable future massive machine-type communication networks. As an evolved variant of code division (CDMA), users in SCMA are separated by assigning distinctive sparse codebooks (CBs). Efficient multiuser detection carried out at the receiver employing message passing algorithm (MPA) tha...

An edge-cancellation-aided iterative detection and decoding (EC-IDD) algorithm is proposed for polar-coded sparse code multiple access (SCMA), which jointly performs Gaussian-approximated message passing (GA-MP) of SCMA supported by the soft list (SLD) polar codes. A reduced-edge factor graph formulated in each consecutive iteration with aid cyclic redundancy check (CRC) EC. Based on simplified...