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Analyzing Uplink Grant-free Sparse Code Multiple Access System in Massive IoT Networks
[article]
2021
arXiv
pre-print
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Grant-free sparse code multiple access (GF-SCMA) is considered to be a promising multiple access candidate for future wireless networks. ...
We then analyze the error rate performance of GF-SCMA in the case of codebook collision to investigate the reliability of GF-SCMA when reusing codebook in massive IoT networks. ...
CONCLUSION In this paper, we analyzed the success probability and error rate performance of GF-SCMA system in massive IoT networks. ...
arXiv:2103.10241v1
fatcat:oqwthuzicjdszguiggq36uzxoy
Guest Editorial Massive Access for 5G and Beyond—Part I
2021
IEEE Journal on Selected Areas in Communications
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M ASSIVE access, also known as massive connectivity or massive machine-type communication (mMTC), is one of the main use cases of the fifth-generation (5G) and beyond 5G (B5G) wireless networks. ...
This Special Issue (SI) of the IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS (JSAC) on Massive Access for 5G and Beyond contains the latest results of researchers, industry practitioners, and individuals ...
sparse support recovery in multiple measurement vector models of mMTC for IoT. ...
doi:10.1109/jsac.2020.3018975
fatcat:wkfhqnwtwjemdg7l2yjvisu3sq
Physical layer security for massive access in cellular Internet of Things
2020
Science China Information Sciences
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This article reviews the security issues in the cellular IoT network with an emphasis on revealing the corresponding challenges and opportunities for the design of secure massive access. ...
Especially, we propose a secure massive access framework for the cellular IoT network by exploiting the inherent co-channel interferences. ...
To solve this problem, the grant-free random access protocol is widely applied in the massive access systems [46, 47] . ...
doi:10.1007/s11432-019-2650-4
fatcat:fdijv4x6cbdc5lyesmgvapjkri
Massive Access for 5G and Beyond
[article]
2020
arXiv
pre-print
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A typical application of massive access is the cellular Internet of Things (IoT). ...
This paper presents a comprehensive survey of aspects of massive access design for B5G wireless networks. ...
in an uplink cloud radio access network. ...
arXiv:2002.03491v2
fatcat:e632upafkvhwlm4m2mwhbeleam
Hybrid NOMA for Future Radio Access: Design, Potentials and Limitations
[article]
2020
arXiv
pre-print
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Therefore, this article explores hybrid NOMA (HNOMA) for massive multiple access in the uplink scenarios due to its higher spectral efficiency. ...
Therefore, we analyze and review the performance of uplink based system involving HNOMA transmission in the presence of imperfect CSI. ...
In CD-based NOMA technique includes interleave division multiple access (IDMA), multi-user shared access (MUSA) technique, pattern division multiple access (PDMA), and sparse code multiple access (SCMA ...
arXiv:2012.08106v1
fatcat:53aqiu4oczbp3b55hmqkmt6o34
Compressive Sensing-Based Secure Uplink Grant-Free Systems
2022
Frontiers in Signal Processing
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Thus, the physical layer security becomes a critical issue in uplink grant-free communications. ...
strict access grant process. ...
Secure Uplink Grant-Free Systems. ...
doi:10.3389/frsip.2022.837870
doaj:f515ac9c658f4e12a02f46c6a0f7d612
fatcat:ltn23xemf5elvg3xqnujparelm
Wireless 6G Connectivity for Massive Number of Devices and Critical Services
[article]
2024
arXiv
pre-print
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2024 pre-print arXiv:2401.01127v1 fatcat:gujtoyjdx5cdrfzfyhzpmkeyhi
While mMTC research in 5G was predominantly focused on the problem of uncoordinated access in the uplink for a large number of devices, the traffic patterns in 6G may become more symmetric, leading to ...
The third part will analyze the coexistence of massive connectivity and critical services. ...
Grant-Free Massive Random Access: Both grant-based and grant-free methods can be useful in appropriate setups. ...
arXiv:2401.01127v2
fatcat:oem75mf2djglhordgb4bj33xie
Guest editorial: New advances in non-orthogonal multiple access
2020
China Communications
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The article by Cai et al., "Active user and data detection for uplink grant-free NOMA systems," considers active user detection (AUD), channel estimation (CE) and multi-user detection (MUD) for both uplink ...
Orthogonal multiple access (OMA), as one multiple access method, has been prevailing since the first generation (1G) cellular system. ...
The article by Cai et al., "Active user and data detection for uplink grant-free NOMA systems," considers active user detection (AUD), channel estimation (CE) and multi-user detection (MUD) for both uplink ...
doi:10.23919/jcc.2020.9267791
fatcat:kazwrm2lbzdx5edagwlhl2dnva
Cellular, Wide-Area, and Non-Terrestrial IoT: A Survey on 5G Advances and the Road Towards 6G
[article]
2021
arXiv
pre-print
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The solutions include grant-free access and channel coding for short-packet communications, non-orthogonal multiple access, and on-device intelligence. ...
Specifically, wireless technology enhancements for providing IoT access in fifth-generation (5G) and beyond cellular networks, and communication networks over the unlicensed spectrum are presented. ...
Today's 5G NB-IoT is a grant-based random access [76, 250] 2) Grant-free random access: A grant-free transmission, on the other hand, eliminates the scheduling request for uplink data transmission. ...
arXiv:2107.03059v1
fatcat:i7rxlipsd5eojgpx3x5yxioozq
Performance Analysis of Grant-Free Multiple Access for Supporting Sporadic Traffic in Massive IoT Networks
2019
IEEE Access
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Grant-free multiple access (GFMA) protocol has been regarded as a key element to support sporadic traffic generated from massive internet-of-things (IoT) networks. ...
INDEX TERMS Cellular IoT networks, grant-free multiple access, sporadic traffic, massive connectivity, multi-packet reception. 166648 This work is licensed under a Creative Commons Attribution 4.0 License ...
[19] studied the joint user activity and data detection problem in an uplink grant-free non-orthogonal multiple access (NOMA) system based on compressive sensing. Dogan et al. ...
doi:10.1109/access.2019.2954203
fatcat:po4gdyw7znbfne2wjysdytwc5e
Activity Detection for Grant-Free NOMA in Massive IoT Networks
[article]
2022
arXiv
pre-print
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Recently, grant-free transmission paradigm has been introduced for massive Internet of Things (IoT) networks to save both time and bandwidth and transmit the message with low latency. ...
In order to make it more practical, we consider unknown and time-varying activity rate for the IoT devices. ...
ACKNOWLEDGMENT The study presented in this paper is supported by Alberta Innovates and Natural Sciences and Engineering Research Council of Canada (NSERC). ...
arXiv:2301.01274v1
fatcat:ufwf3mlivbeatl2mlac3s6uki4
DNN-Aided Block Sparse Bayesian Learning for User Activity Detection and Channel Estimation in Grant-Free Non-Orthogonal Random Access
2019
IEEE Transactions on Vehicular Technology
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2019 pre-print arXiv:1910.02953v1 fatcat:hb6nmcy2zfdwthe7x3xsmluxreOther Versions
In order to address the joint user activity detection (UAD) and channel estimation (CE) problem in the grant-free NORA system, we propose a deep neural network-aided message passing-based block sparse ...
A grant-free non-orthogonal random access (NORA) system is considered in this paper, which could simultaneously reduce the access delay and support more Machine Type Communication (MTC) devices with limited ...
A DNN-MP-BSBL algorithm was proposed in this paper for the joint UAD and CE problem in grant-free NORA systems. ...
doi:10.1109/tvt.2019.2947214
fatcat:k7mapivt2bdb5hrqvrx2lwbki4
Non-Orthogonal Multiple Access: A Unified Perspective
2018
IEEE wireless communications
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Non-orthogonal multiple access (NOMA) is a promising technique for future mobile communication systems, which can approach multiuser channel capacity by sharing the same time-frequency resources with multiple ...
A systematic performance comparison of different NOMA schemes regarding their peak-to-average power ratio, receiver complexity, latency, grant-free access, user load and peak throughput is also provided ...
In IoT applications, grant-free access is required in the uplink to avoid a high signalling overhead and system latency, where the conventional request-grant procedure can be omitted, while the user identities ...
doi:10.1109/mwc.2018.1700070
fatcat:hy6fbtlapvhmvpoxxcwdogxmhm
Massive machine-type communications in 5g: physical and MAC-layer solutions
2016
IEEE Communications Magazine
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2016 pre-print arXiv:1606.03893v1 fatcat:n7rp7zvvqjebdgtwqea3wmm7z4
The main challenge in mMTC is scalable and efficient connectivity for a massive number of devices sending very short packets, which is not done adequately in cellular systems designed for human-type communications ...
In this article, we introduce the physical (PHY) and medium access control (MAC) layer solutions developed within METIS to address this challenge. ...
Sparse code multiple access (SCMA) [8] is a non-orthogonal multiple-access scheme in code domain that can support massive connectivity. ...
doi:10.1109/mcom.2016.7565189
fatcat:iwl6ooby3jcnzjbu67wdgtv2lu
Table of Contents
2020
IEEE Transactions on Vehicular Technology
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Yin 11659 Joint User-Activity and Data Detection for Grant-Free Spatial-Modulated Multi-Carrier Non-Orthogonal Multiple Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Wang 11501 Complementary Coded CDMA Systems With CP-Free OFDM . . . . . . . . . . . . . X. Wang, X. Liu, H.-H. Chen, and W. ...
doi:10.1109/tvt.2020.3027076
fatcat:xns72myvtfhgpjy622lpgmii3i
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