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Sparse Code Multiple Access: Potentials and Challenges [PDF]

open access: goldIEEE Open Journal of the Communications Society, 2021
The massive connectivity is among other unprecedented requirements which are expected to be satisfied in order to follow the perpetual increase of connected devices in the era of Internet of Things.
Manel Rebhi   +3 more
doaj   +5 more sources

Sub-Graph Based Joint Sparse Graph for Sparse Code Multiple Access Systems [PDF]

open access: goldIEEE Access, 2018
Sparse code multiple access (SCMA) is a promising air interface candidate technique for next-generation mobile networks, especially for massive machine-type communications. In this paper, we design a low-density parity-check (LDPC) coded SCMA detector by
Ke Lai   +5 more
doaj   +5 more sources

A Novel Image-Classification-Based Decoding Strategy for Downlink Sparse Code Multiple Access Systems [PDF]

open access: yesEntropy, 2023
The introduction of sparse code multiple access (SCMA) is driven by the high expectations for future cellular systems. In traditional SCMA receivers, the message passing algorithm (MPA) is commonly employed for received-signal decoding. However, the high
Zikang Chen   +4 more
doaj   +2 more sources

Investigating High Performance Implementations of Sparse Code Multiple Access (SCMA) Codebook Design

open access: diamondJISR on Computing, 2022
- The number of mobile devices, IoT devices, and their applications is increasing day by day in recent years and further going to increase in coming years.
Halar Mustafa
doaj   +3 more sources

A Tutorial on Decoding Techniques of Sparse Code Multiple Access [PDF]

open access: goldIEEE Access, 2022
Sparse Code Multiple Access (SCMA) is a disruptive code-domain non-orthogonal multiple access (NOMA) scheme to enable future massive machine-type communication networks.
Saumya Chaturvedi   +4 more
doaj   +4 more sources

Next-Generation Passive Optical Network Based on Sparse Code Multiple Access and Graph Neural Networks [PDF]

open access: goldIEEE Photonics Journal, 2022
Sparse code multiple access (SCMA) is a promising technology to provide high throughput and overall improved system performance at affordable cost for next-generation passive optical networks (NG-PONs).
Hui Yang   +4 more
doaj   +2 more sources

Downlink Multiple Input Multiple Output Mixed Sparse Code Multiple Access for 5G System

open access: goldIEEE Access, 2018
For downlink multiple-input multiple-output-sparse code multiple access (MIMO-SCMA) system, the convergence reliability of the detected codeword in each decision process is unsatisfactory at the message passing algorithm receiver. To address this problem,
Cheng Yan, Ningbo Zhang, Guixia Kang
doaj   +2 more sources

An Error Rate Comparison of Power Domain Non-Orthogonal Multiple Access and Sparse Code Multiple Access

open access: goldIEEE Open Journal of the Communications Society, 2021
Non-orthogonal Multiple Access (NOMA) has been envisioned as one of the key enabling techniques to fulfill the requirements of future wireless networks. The primary benefit of NOMA is higher spectrum efficiency compared to Orthogonal Multiple Access (OMA)
Qu Luo   +6 more
doaj   +2 more sources

Multiple Access With Polarity Division Sparse Code for Visible Light Communication [PDF]

open access: goldIEEE Photonics Journal, 2019
The increasing demand of mobile internet and Internet of Things poses challenging requirements for indoor wireless communication. Visible light communication (VLC) is a promising technology to alleviate the growing traffic problem. In addition, nonlinear
Yu Xiao, Zhitong Huang, Yuefeng Ji
doaj   +2 more sources

Jointly Optimizing Resource Allocation, User Scheduling, and Grouping in SBMA Networks: A PSO Approach [PDF]

open access: yesEntropy
Blind 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

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