Results 11 to 20 of about 1,022 (162)
Low‐complexity detection for uplink massive MIMO SCMA systems
IET Communications, 2021 This paper presents a sparse code multiple access (SCMA) system with massive antennas at the base station. This system is referred to as M‐SCMA system. A spectrally‐efficient and massive access next‐generation wireless network is realized through massive
Sanjeev Sharma +2 more
doaj +2 more sources
Designing Multidimensional Constellations and Efficient Detection Schemes for Sparse Code Multiple Access (SCMA) Systems [PDF]
, 2020 Monirosharieh Vameghestahbanati
openaire +3 more sources
Jointly Optimizing Resource Allocation, User Scheduling, and Grouping in SBMA Networks: A PSO Approach [PDF]
EntropyBlind Interference Alignment (BIA) and Sparse Code Multiple Access (SCMA) offer the potential for massive connectivity but face limitations. Our recently proposed Sparsecode-and-BIA-based Multiple Access (SBMA) scheme synergizes their strengths ...
Jianjian Wu +4 more
doaj +2 more sources
Dual‐mode codeword position index based SCMA with transmit diversity
IET CommunicationsCodeword position index based sparse code multiple access (CPI‐SCMA) is an effective scheme that expands codeword positions in the time domain and carries extra information by their index.
Yanbing Yang, Jing Lei, Ke Lai
doaj +2 more sources
Design of Online Music Education System Based on Artificial Intelligence and Multiuser Detection Algorithm. [PDF]
Comput Intell Neurosci, 2022 With the development of information technology, online music education has become a mainstream education method. Especially after the outbreak of COVID‐19, music teachers have to teach through online. Therefore, an online music education system that can improve the quality of teaching is particularly important.
Yan H.
europepmc +2 more sources
A Novel Multi-Task Learning Empowered Codebook Design for Downlink SCMA Networks [PDF]
, 2022 Sparse code multiple access (SCMA) is a promising code-domain non-orthogonal multiple access (NOMA) scheme for the enabling of massive machine-type communication.
Chen, Gaojie +4 more
core +3 more sources
SCMA CODEBOOK DESIGN BASED ON GRADIENT ASCENT ALGORITHM [PDF]
Proceedings on Engineering Sciences, 2022 Sparse Code Multiple Access (SCMA) is a non-orthogonal multiple access scheme, which improves spectrum efficiency. SCMA codebooks determine the bit error rate (BER) performance.
Islam Kanatbekuli +4 more
doaj +1 more source
CG-SCMA Codebook Design Based on Maximized Euclidian Distance
Journal of Telecommunications and Information Technology, 2023 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 ...
Sura S. Mohamed, Hikmat N. Abdullah
doaj +1 more source
SCMA Spectral and Energy Efficiency With QoS
IEEE Access, 2021 Sparse code multiple access (SCMA) is one of the promising candidates for new radio access interface. The new generation communication system is expected to support massive user access with high capacity. However, there are numerous problems and barriers
S. Jaber, W. Chen, K. Wang
doaj +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