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MUSA Grant-Free Access Framework and Blind Detection Receiver
2021
Journal of Communication and Information Systems
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Index Terms-Grant-free access, blind multi-user detection, MUSA, NOMA, successively interference cancellation, mMTC, deep neural network. ...
Furthermore, MUSA introduces a grant-free transmission and a blind multi-user detection at the receiver, reducing the complexity on the transmit side. ...
These premises are incompatible with a grant-free multiple access with blind detection. ...
doi:10.14209/jcis.2021.13
fatcat:4pgwkbztyfczxjfq5qg6znhu7e
Grant-free Non-orthogonal Multiple Access for IoT: A Survey
[article]
2019
arXiv
pre-print
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autonomous and grant-free communication, where devices can transmit data whenever they need. ...
In this context, non-orthogonal multiple access (NOMA) has emerged as a potential technology that allows overlapping of multiple users over a radio resource, thereby creating an opportunity to enable more ...
This blind detection is crucial to the performance of grant-free UL communication. ...
arXiv:1910.06529v1
fatcat:6ouywssbwjhm3nt5iz6px7h7oa
Deep Neural Network-Based Blind Multiple User Detection for Grant-free Multi-User Shared Access
[article]
2021
arXiv
pre-print
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In this paper, we propose a novel deep neural network (DNN)-based multiple user detection (MUD) for grant-free MUSA systems. ...
The thoroughly learned DNN model is capable of distinguishing the active devices of the received signal without any a priori knowledge of the device sparsity level and the channel state information. ...
Furthermore, the authors in [10] proposed MUD without the reference signal at the BS for MUSA. First, the spreading codes used by the active users are estimated by an iterative algorithm. ...
arXiv:2106.11204v1
fatcat:hod2frjuxrc37d4zahynsmwyhi
Blind Multi-user Detection for Autonomous Grant-free High-Overloading MA without Reference Signal
[article]
2017
arXiv
pre-print
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In this paper, a novel blind multi-user detection(MUD) framework for autonomous grant-free high-overloading non-orthogonal multiple access is introduced in detail aimed at fulfilling the requirements of ...
In addition, underpinning state-of-art blind ideas such as blind activation detection taking advantage of the statistical metric of the aggregate signals, blind equalization based on the constellation's ...
To this end, a highly efficient blind multiple user detection(MUD) for AGF multiple access without any reference signal is described and evaluated given the MUSA sequence listed in Appendix A. ...
arXiv:1712.02601v1
fatcat:k36xoadu4fgatayqe6r2jaiybq
Blind Receive Beamforming for Autonomous Grant-Free High-Overloading Multiple Access
[article]
2018
arXiv
pre-print
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grant-free (AGF) transmission. ...
Although spatial combining has provided significant gains in conventional grant-based transmission, this technique is stuck in dilemma when it comes to autonomous grant-free transmission tailored for IoT ...
Revolutionary Autonomous Grant-Free (AGF) access [6] [7] [8] allowing UE transmission directly from idle state can extremely simplify the transmitter design and is tailored for IoT systems in mMTC and ...
arXiv:1805.07013v1
fatcat:auwceq3dbjhdhfpqzdxn3akgh4
Performance Comparison of Massive MIMO System with Orthogonal and Nonorthogonal Multiple Access for Uplink in 5G Systems
2020
Applied Sciences
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This paper presents two new sets of complex codes— multiple-user shared-access (MUSA) and extended MUSA (EMUSA), and an algorithm of allocation such that the intercorrelation should be as reduced as possible ...
that can be used in MUSA for 5G NOMA-based technique scheme. ...
The system with one antenna at the transmitter and one antenna at the receiver was taken into consideration, and a blind multiuser detection (MUD) without reference signal was used at the receiver. ...
doi:10.3390/app10207139
fatcat:q27wugrihfgwrlue2wiyh55izm
A Survey of Non-Orthogonal Multiple Access for 5G
2018
IEEE Communications Surveys and Tutorials
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In contrast to the family of conventional orthogonal multiple access (OMA) schemes, the key distinguishing feature of NOMA is to support a higher number of users than the number of orthogonal resource ...
This may be realized by the sophisticated inter-user interference cancellation at the cost of an increased receiver complexity. ...
In this scheme, the desired signal of the cell center user can be directly detected without detecting the signal of the cell edge user, i.e., without SIC processing. ...
doi:10.1109/comst.2018.2835558
fatcat:ycxmkfe3rjet7eikctqijc554m
Signature-based Non-orthogonal Multiple Access (S-NOMA) for Massive Machine-Type Communications in 5G
[article]
2018
arXiv
pre-print
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Additionally, we present the detection algorithms employed to decode each device's data from non-orthogonally superimposed signals at the receiver. ...
In this article, we provide a comprehensive review of the signature-based NOMA (S-NOMA) schemes as potential candidates for IoT. ...
Grant-free S-NOMA In grant-free S-NOMA, each active device directly transmits its packets to the base station (BS) without waiting for any permission. ...
arXiv:1808.07163v1
fatcat:ekilp5nu6ncupgwlbsk72eijfa
Design of Non-Orthogonal Sequences Using a Two-Stage Genetic Algorithm for Grant-Free Massive Connectivity
[article]
2021
arXiv
pre-print
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In massive machine-type communications (mMTC), grant-free access is a key enabler for a massive number of users to be connected to a base station with low signaling overhead and low latency. ...
In this paper, a two-stage genetic algorithm (GA) is proposed to design a new set of user-specific, non-orthogonal, unimodular sequences for uplink grant-free access. ...
detection in uplink grant-free access. ...
arXiv:2108.00361v1
fatcat:zpejenzjovenbccgcsuk24jhou
Clustering-based Joint Channel Estimation and Signal Detection for NOMA
[article]
2022
arXiv
pre-print
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We propose a joint channel estimation and signal detection approach for the uplink non-orthogonal multiple access using unsupervised machine learning. ...
We show that, when the received powers of the users are sufficiently different, the proposed clustering-based approach achieves an SER performance on a par with that of the conventional maximum-likelihood ...
and signal detection in grant-free NOMA. ...
arXiv:2201.06245v1
fatcat:a6giiqtk25gphfuecsckm2kfi4
Massive Access for 5G and Beyond
[article]
2020
arXiv
pre-print
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This paper presents a comprehensive survey of aspects of massive access design for B5G wireless networks. ...
Different from conventional human-type communication, massive access aims at realizing efficient and reliable communications for a massive number of IoT devices. ...
without a grant [63] . ...
arXiv:2002.03491v2
fatcat:e632upafkvhwlm4m2mwhbeleam
Investigation on Evolving Single-carrier NOMA into Multi-carrier NOMA in 5G
2018
IEEE Access
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multiple access (PDMA). ...
Non-orthogonal multiple access (NOMA) is one promising technology, which provides high system capacity, low latency, and massive connectivity, to address several challenges in the fifth-generation wireless ...
shared access (MUSA) and sparse code multiple access (SCMA). ...
doi:10.1109/access.2018.2868093
fatcat:xelry2vjgzdwhp3lj42xm4xfua
A General Deep Reinforcement Learning Framework for Grant-Free NOMA Optimization in mURLLC
[article]
2021
arXiv
pre-print
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Grant-free non-orthogonal multiple access (GF-NOMA) is a potential technique to support massive Ultra-Reliable and Low-Latency Communication (mURLLC) service. ...
To address this problem, we develop a general learning framework for signature-based GF-NOMA in mURLLC service taking into account the multiple access signature collision, the UE detection, as well as ...
Fig. 2 : 2 Uplink transmissions for grant-based and grant-free random access. ...
arXiv:2101.00515v2
fatcat:q6kdd7becvfa3m3nqhpowwtpwi
Reconstitution of CO2 regulation of SLAC1 anion channel and function of CO2-permeable PIP2;1 aquaporin as carbonic anhydrase 4 interactor
[article]
2015
bioRxiv
pre-print
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The molecular signaling mechanisms leading to CO2-induced stomatal closure are only partially understood. ...
These findings identify the CO2-permeable PIP2;1 aquaporin as key interactor of carbonic anhydrases, show functional reconstitution of extracellular CO2 signaling to ion channel regulation and implicate ...
REFERENCES Ainsworth, E.A., and Long, S.P. (2005). What have we learned from 15 years of free air CO 2 enrichment (FACE)? ...
doi:10.1101/030296
fatcat:sh7zjijrmrcahpdg236qnenr6a
LIPIcs : an Open-Access Series for International Conference Proceedings
2016
ERCIM News
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The research has been partly funded by an NWO Free Competition Grant and by a Public-Private Partnership between CWI and NXP Semiconductors. ...
The MUSA framework proposes a tool, SLA generator, which can be used to identify the Security SLA that each application component must grant. ...
The MUSA IDE will allow embedding security agents in the application components for self-protection, i.e. they will enable the activation of security monitors and controls at runtime without modifying ...
doi:10.18154/rwth-2018-223393
fatcat:ddo7qz65l5b7peuksw2amaoxai
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