Results 21 to 30 of about 475 (165)
Toward High-Performance Implementation of 5G SCMA Algorithms [PDF]
IEEE Access, 2019 The recent evolution of mobile communication systems toward a 5G network is associated with the search for new types of non-orthogonal modulations such as sparse code multiple access (SCMA).
Alireza Ghaffari +4 more
doaj +3 more sources
Designing Multidimensional Constellations and Efficient Detection Schemes for Sparse Code Multiple Access (SCMA) Systems [PDF]
, 2020 Sparse code multiple access (SCMA) is a class of non-orthogonal multiple access that is proposed to support uplink machine-type communication services.
Vameghestahbanati, Monirosharieh
openaire +3 more sources
Impact of Factor Graph on Average Sum Rate for Uplink Sparse Code Multiple Access Systems [PDF]
IEEE Access, 2016 In this paper, we first study the average sum rate of sparse code multiple access (SCMA) systems, where a general scenario is considered under the assumption that the distances between the mobile users and the base station are not necessarily identical ...
Zheng Yang +5 more
doaj +3 more sources
Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication [PDF]
, 2022 This paper presents Discrete Wavelet Transformed Sparse Code Multiple Access (DWT-SCMA) in Power Line Communication (PLC) systems. In the present internet of things era, PLC provides an established infrastructure for low-cost and reliable indoor ...
Kaamran Raahemifar +4 more
core +1 more source
Transactions on Emerging Telecommunications Technologies, Volume 33, Issue 9, September 2022., 2022 A model for characterizing the SE‐EE trade‐off in a SCMA‐based HCN is presented. This model consists of an algorithm that can be used to simultaneously maximize the SE and EE of a SBS sleep‐mode enabled SCMA‐based HCN. An depth analysis to get insight into the SE‐EE trade‐off behavior of a SCMA‐based HCN under various SBS sleep‐mode conditions is done.
Etinosa Noma‐Osaghae +3 more
wiley +1 more source
Transactions on Emerging Telecommunications Technologies, Volume 33, Issue 9, September 2022., 2022 This article proposes an efficient method to detect transmission status in grant‐free non‐orthogonal multiple access, which is identified as a potential technology to support the massive Internet of Things communication. The simulation results, along with detailed mathematical analysis, demonstrate that the proposed method achieves high performance ...
Muhammad Basit Shahab +3 more
wiley +1 more source
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 In recent years, with the progress and development of social science and technology, remote monitoring of Internet of Things systems has attracted more and more attention. The remote monitoring system is mainly a network system with convenient layout, simple maintenance, and high security performance built on the basis of the wireless network, which ...
Lei Hu, Haichang Zhang
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 The future communication requirements for industrial automation will differ significantly from existing technologies. Traffic in Industry 4.0 imposes real‐time requirements, requiring ultra‐reliable communication (URC) with high reliability and minimal latency. The demand for ultra‐high reliability as high as 99.999999 percent and as low as 1 ms end‐to‐
Athirah Mohd Ramly +3 more
wiley +1 more source
Interleaving based SCMA Codebook Design Using Arnold’s Cat Chaotic Map
Iraqi Journal of Information & Communication Technology, 2023 Non-orthogonal multiple access (NOMA) technology is a significant topic of the present 5G investigation. A possible NOMA approach is Sparse Code Multiple Access (SCMA), increasing next-generation communication's ability to handle multiple users. In SCMA,
Sura S. Mohamed, Hikmat N. Abdullah
doaj +1 more source
Adaptive Modulation SCMA Codebook Design Based on Constellation Rotation
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 Sparse Code Multiple Access (SCMA) is one of the competitive nonorthogonal multiple access (NOMA) techniques for the fifth‐generation (5G) communication system. The SCMA codebook design is particularly important for SCMA systems. However, according to the results of our investigation of as many literature as possible, there is no research on adaptive ...
Meiming Fu +5 more
wiley +1 more source