Results 141 to 150 of about 475 (165)
A Deep Learning Approach for MIMO-NOMA Downlink Signal Detection. [PDF]
Sensors (Basel), 2019 Lin C, Chang Q, Li X.
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Auto-SCMA: Learning Codebook for Sparse Code Multiple Access using Machine Learning
2021 National Conference on Communications (NCC), 2021Sparse Code Multiple Access (SCMA) is an effective non-orthogonal multiple access technique that facilitates communication among users with limited orthogonal resources. Currently, its performance is limited by the quality of the handcrafted codebook.
Ekagra Ranjan +3 more
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Semi-granted Sparse Code Multiple Access (SCMA) for 5G Networks (Invited Paper)
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, 2018Sparse Code Multiple Access (SCMA) is a promising non-orthogonal multiple access technology for 5G radio access networks. It improves the connectivity and capacity. However, the two multiple access methods of SCMA: granted and grant-free cannot dynamically match the real-time demands since the resources allocated for the granted method and grant-free ...
Mao Yang 0001 +5 more
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Radio resource allocation for uplink sparse code multiple access (SCMA) networks using matching game [PDF]
2016 IEEE International Conference on Communications (ICC), 2016 In this paper, we study the codebook-based resource allocation problem for an uplink sparse code multiple access (SCMA) network. The base station (BS) assigns to each user a set of subcarriers corresponding to a specific codebook, and each user performs power control over multiple subcarriers.
Boya Di, Lingyang Song, Yonghui Li 0001
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Analyzing Uplink Grant-Free Sparse Code Multiple Access System in Massive IoT Networks [PDF]
IEEE Internet of Things Journal, 2022 Grant-free sparse code multiple access (GF-SCMA) is considered to be a promising multiple access candidate for future wireless networks. In this article, we focus on characterizing the performance of uplink GF-SCMA schemes in a network with ubiquitous ...
Ke Lai, Jing Lei, Yansha Deng
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A Novel GNN-based Decoding Scheme for Sparse Code Multiple Access (SCMA)
2024 International Conference on Networking and Network Applications (NaNA)Zijian Chen, Limei Peng, Pin-Han Ho
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Reconfigurable Intelligent Surface-Assisted Uplink Sparse Code Multiple Access [PDF]
IEEE Communications Letters, 2021 Reconfigurable intelligent surface-empowered communication (RIS) and sparse code multiple access (SCMA) are promising candidates for future generations of wireless networks. The former enhances the transmission environments, whereas the latter provides a
Ibrahim Al-Nahhal +2 more
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Delayed Bit Interleaved Coded Sparse Code Multiple Access [PDF]
IEEE Transactions on Vehicular Technology, 2020 Targeting to provide reliable short-packet communications with tens of bits in machine-type networks, we investigate a novel sparse code multiple access (SCMA) scheme called delayed bit-interleaved coded SCMA (DBIC-SCMA). At the transmitter side, a delay
Zeina Mheich, Zilong Liu, Pei Xiao
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FH-SCMA: Frequency-Hopping Based Sparse Code Multiple Access for Next Generation Internet of Things
2017 IEEE Wireless Communications and Networking Conference (WCNC), 2017The next generation Internet of Things (IoT) is expected to support extremely diverse applications and terminals, which requires the massive connectivity. Unfortunately, current mobile communication systems with orthogonal multiple access technique can hardly satisfy this demand.
Zhicheng Bai +5 more
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Sparse Code Multiple Access (SCMA)
2018Sparse Code Multiple Access (SCMA) enables non-orthogonal transmissions of multiple users’ signals among code and power domain, which could greatly improve the spectral efficiency. Due to the sparsity of the multi-dimensional codewords, the low-complexity message-passing algorithm (MPA) can be adopted and near maximum likelihood (ML) performance for ...
Zheng Ma, Jinchen Bao
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