Results 41 to 50 of about 475 (165)

NOMA and OMA‐Based Massive MIMO and Clustering Algorithms for Beyond 5G IoT Networks

open access: yesWireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021
The Internet of Things (IoT) has brought about various global changes, as all devices will be connected. This article examines the latest 5G solutions for enabling a massive cellular network. It further explored the gaps in previously published articles, demonstrating that to deal with the new challenges.
Taj Rahman   +6 more
wiley   +1 more source

Sparse Code Multiple Access Scheme Based on Variational Learning [PDF]

open access: yes, 2022
Sparse code multiple access (SCMA) technology has been widely studied thanks to its outstanding overload performance, which provides greater device access on limited time-frequency resources.
Wang, Zhenyong   +4 more
core   +1 more source

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

open access: yes, 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)
Lixia Xiao   +13 more
core   +1 more source

Improved MAX-Log MPA multiuser detection algorithm in SCMA system

open access: yesDianzi Jishu Yingyong, 2018
Sparse code multiple access(SCMA) is a novel non-orthogonal multiple access scheme to face the future 5G communication. In allusion to the problem that sparse code multiple access(SCMA) system based on a logarithm-domain MAX-Log message passing algorithm(
Wu Xiong   +3 more
doaj   +1 more source

A Power Domain Sparse Code Multiple Access Scheme for Visible Light Communications [PDF]

open access: yes, 2020
We propose a non-orthogonal multiple access (NOMA) scheme known as power domain sparse code multiple access (PD-SCMA) for visible light communications (VLC), which uses both the power and code domains for multi users signal transmission. The signal model
Ghassemlooy, Zabih   +2 more
core   +1 more source

Low-complexity hybrid interference cancellation for sparse code multiple access

open access: yesEURASIP Journal on Wireless Communications and Networking, 2022
Sparse Code Multiple Access (SCMA) is one of Non Orthogonal Multiple Access (NOMA) candidates for 5G, the fifth generation mobile network. Multiple overlapped blocks of SCMA code are transmitted per frequency layer which compels the receiver to cancel ...
Bilal Ghani   +4 more
doaj   +1 more source

Sparse code multiple access asynchronous uplink multiuser detection algorithm [PDF]

open access: yes, 2019
Sparse code multiple access (SCMA) is one type of non-orthogonal multiple access techniques for the fifth-generation wireless communication networks. Existing multiuser detection algorithms for SCMA uplink systems are based on the assumption that signals
Xiang, Wei   +3 more
core   +1 more source

Sparse code multiple access codebooks optimization [PDF]

open access: yes, 2022
Fen Bilimleri Enstitüsü, Elektrik-Elektronik Mühendisliği Ana Bilim DalıSon yıllarda çok kullanıcılı iletişim kurma talebi günümüzün vazgeçilmez ihtiyaçlarından birisi haline gelmiştir.
Tezekici, Mürüvvet Aybüke
core  

Federated Learning Driven Sparse Code Multiple Access in V2X Communications [PDF]

open access: yes
Sparse code multiple access (SCMA) is one of the competitive non-orthogonal multiple access techniques for the next generation multiple access systems.
So, Daniel KC   +5 more
core   +4 more sources

A review of codebook design methods for sparse code multiple access [PDF]

open access: yes, 2021
The progressions in telecommunication beyond the 5th generation have created a need to improve research drifts. The current 5G study has an important focus on non-orthogonal multiple access (NOMA) technology.
Mad Kaidi, Hazilah   +10 more
core   +2 more sources

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