Results 11 to 20 of about 198 (123)

Sparse Code Multiple Access: Potentials and Challenges

open access: yesIEEE 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   +1 more source

Sparse Code Multiple Access (SCMA) Technique

open access: yes, 2023
Next-generation wireless networks require higher spectral efficiency and lower latency to meet the demands of various upcoming applications. Recently, non-orthogonal multiple access (NOMA) schemes are introduced in the literature for 5G and beyond. Various forms of NOMA are considered like power domain, code domain, pattern division multiple access ...
Sharma, Sanjeev, Deka, Kuntal
openaire   +2 more sources

Interleaving based SCMA Codebook Design Using Arnold’s Cat Chaotic Map

open access: yesIraqi 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

Low-Complexity Codebook Design for SCMA-Based Visible Light Communication

open access: yesIEEE Open Journal of the Communications Society, 2022
Sparse code multiple access (SCMA), as a code-domain non-orthogonal multiple access (NOMA) scheme, has received considerable research attention for enabling massive connectivity in future wireless communication systems.
Saumya Chaturvedi   +4 more
doaj   +1 more source

NEW COMPUTER GENERATED-SCMA CODEBOOK WITH MAXIMIZED EUCLIDIAN DISTANCE FOR 5G

open access: yesIraqi Journal of Information & Communication Technology, 2019
Sparse code multiple access (SCMA) is one of the Non-Orthogonal Multiple Access (NOMA) that attracts many researchers for its promising future uses in 5G systems. In this paper, a Computer Generated-Sparse Code Multiple Access (CG-SCMA) is proposed.
Yasmine M. Tabra, Bayan M. Sabbar
doaj   +1 more source

Low‐complexity detection for uplink massive MIMO SCMA systems

open access: yesIET 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   +1 more source

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

open access: yesIEEE 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   +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

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

A Multi-user Detection Algorithm for SCMA System with Low Complexity [PDF]

open access: yesJisuanji gongcheng, 2018
As a novel Non-Orthogonal Multiple Access(NOMA) technology,Sparse Code Multiple Access(SCMA) can meet the performance requirements of massive connections for 5G,but the Message Passing Algorithm(MPA) has the problems of slow convergence and high ...
CHEN Fatang,JIA Dongsheng,GENG Mingyue
doaj   +1 more source

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