scholarly journals A review of codebook design methods for sparse code multiple access

2021 ◽  
Vol 22 (2) ◽  
pp. 927
Author(s):  
Syed Aamer Hussain ◽  
Norulhusna Ahmad ◽  
Ibraheem Shayea ◽  
Hazilah Mad Kaidi ◽  
Liza Abdul Latiff ◽  
...  
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Multiple Access ◽  
Design Methods ◽  
Sparse Code ◽  
Practical Implementation ◽  
Next Generation ◽  
Promising Technique ◽  
Codebook Design ◽  
Optimisation Technique

<span lang="EN-GB">The progressions in telecommunication beyond the 5<sup>th</sup> generation have created a need to improve research drifts. The current 5G study has an important focus on non-orthogonal multiple access (NOMA) technology. sparse code multiple access (SCMA) is a promising technique within NOMA, enhancing the multi-user handling capability of next-generation communication. In the SCMA sphere, codebook designing and optimisation are essential research matters. This study conversed with different codebook design practises existing in the literature, analysing them for numerous parameters, including bit error rate (BER), an optimisation technique, and channel settings. From the analysis, the paper presents the efficiency of different approaches. The article also discusses the prospects and challenges of SCMA optimisation in practical implementation in various domains.</span>

scholarly journals Optimized SCMA Codebook Design Using Rotation Based Sub-Divided Constellation for Overloaded System

2021 ◽  
Author(s):  
Madhura K ◽  
M.S.S. Rukmini ◽  
Rajeshree Raut
Keyword(s):  
Wireless Communication ◽  
Multiuser Detection ◽  
Error Rate ◽  
Multiple Access ◽  
Symbol Error Rate ◽  
Sparse Code ◽  
System Model ◽  
Codebook Design

Abstract 5G in wireless communication aims at deploying massive connectivity. Sparse Code Multiple Access (SCMA), proves to be an emerging candidate with multidimensional codebooks proposing, high shaping gain and advanced multiuser detection. A framework for designing a codebook for 200 % overloaded SCMA system with system model is presented in this paper. This article aims at delineating a codebook by subdividing the Mother Constellation (MC) and rotating it to achieve a better Symbol Error Rate (SER) performance over higher values of SNR. Different Codebook designs are taken into consideration for comparing with the sub-constellation based 200% overloaded SCMA. Abstract — 5G in wireless communication aims at deploying massive connectivity. Sparse Code Multiple Access (SCMA), proves to be an emerging candidate with multidimensional codebooks proposing, high shaping gain and advanced multiuser detection. A framework for designing a codebook for 200 % overloaded SCMA system with system model is presented in this paper. This article aims at delineating a codebook by subdividing the Mother Constellation (MC) and rotating it to achieve a better Symbol Error Rate (SER) performance over higher values of SNR. Different Codebook designs are taken into consideration for comparing with the sub-constellation based 200% overloaded SCMA.

Raw bit error rate (BER) measurements of a fully populated optical code division multiple access (CDMA) system

2002 ◽  
Author(s):  
A.J. Mendez ◽  
J.L. Lambert ◽  
J.-M. Morookian ◽  
L.A. Bergman ◽  
R.M. Gagliardi
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Code Division Multiple Access ◽  
Multiple Access ◽  
Cdma System ◽  
Code Division Multiple ◽  
Raw Bit Error Rate

scholarly journals Next-generation passive optical network based on sparse code multiple access and graph neural networks

2021 ◽  
pp. 1-1
Author(s):  
Hui Yang ◽  
Xianzhuo Zhang ◽  
Bangjiang Lin ◽  
Pengcheng Deng ◽  
Anlin Yi
Keyword(s):  
Neural Networks ◽  
Multiple Access ◽  
Optical Network ◽  
Passive Optical Network ◽  
Sparse Code ◽  
Next Generation ◽  
Graph Neural Networks
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