In 5G wireless communications, sparse code multiple access (SCMA) – a multi-dimensional codebook based on specific category of the non-orthogonal (NOMA) technique - enables many users to share resource components with low level detection complexity. The SCMA (MD-SCMA) design presented in this study is constellation rotation and interleaving method. Initially, subset lattice Z 2 used form mother...

In 2020, the world faced corona virus pandemic, which can threaten economy aspect of every country. There are many countries end up experiencing recession, including Indonesia. This study tries to test effect pandemic on Jakarta Islamic Index (JII) stock price, simultaneously and partially. The result shows prices that included in (JII), for three quarters, significantly affected by pandemic. P...

Sharia-based investment is an by the community to obtain profits in accordance with Islamic principles and law. This study aims calculate optimal portfolio return value using Single Index Model, risk VaR (Value at Risk), then implement it Matlab’s GUI (Graphical User Interface). The data used closing stock price on JII (Jakarta Index) 30 stocks for two consecutive years. Furthermore, these are ...

This paper addresses the four enabling technologies, namely multi-user sparse code multiple access (SCMA), content caching, energy harvesting, and physical layer security for proposing an energy and spectral efficient resource allocation algorithm for the access and backhaul links in heterogeneous cellular networks. Although each of the above mentioned issues could be a topic of research, in a ...

The cellular network coexisting with device-to-device (D2D) communications has been studied extensively. Reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA) are promising technologies for the evolution of 5G, 6G beyond. Besides, sparse code (SCMA) is considered suitable next-generation wireless in code-domain NOMA. In this paper, we consider RIS-aided uplink SCMA ...

Sparse code multiple access (SCMA), as a codebook-based non-orthogonal (NOMA) technique, has received research attention in recent years. The codebook design problem for SCMA also been studied to some extent since choices are highly related the system's error rate performance. In this paper, we approach by formulating an optimization maximize minimum Euclidean distance (MED) of superimposed cod...