Multiple Access Schemes for Machine-Type Communications: A Literature Review

2020 ◽  
pp. 13-54
Author(s):  
Tho Le-Ngoc ◽  
Atoosa Dalili Shoaei
Keyword(s):  
Literature Review ◽  
Multiple Access ◽  
Machine Type ◽  
Machine Type Communications ◽  
Multiple Access Schemes

scholarly journals Autonomous Power Decision for the Grant Free Access MUSA Scheme in the mMTC Scenario

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 116
Author(s):  
Wissal Ben Ameur ◽  
Philippe Mary ◽  
Jean-François Hélard ◽  
Marion Dumay ◽  
Jean Schwoerer
Keyword(s):  
Interference Cancellation ◽  
Error Propagation ◽  
Multiple Access ◽  
Transmission Rate ◽  
Free Access ◽  
Decoding Complexity ◽  
Machine Type ◽  
Machine Type Communications ◽  
Multiple Access Schemes ◽  
Lower Complexity

Non-orthogonal multiple access schemes with grant free access have been recently highlighted as a prominent solution to meet the stringent requirements of massive machine-type communications (mMTCs). In particular, the multi-user shared access (MUSA) scheme has shown great potential to grant free access to the available resources. For the sake of simplicity, MUSA is generally conducted with the successive interference cancellation (SIC) receiver, which offers a low decoding complexity. However, this family of receivers requires sufficiently diversified received user powers in order to ensure the best performance and avoid the error propagation phenomenon. The power allocation has been considered as a complicated issue especially for a decentralized decision with a minimum signaling overhead. In this paper, we propose a novel algorithm for an autonomous power decision with a minimal overhead based on a tight approximation of the bit error probability (BEP) while considering the error propagation phenomenon. We investigate the efficiency of multi-armed bandit (MAB) approaches for this problem in two different reward scenarios: (i) in Scenario 1, each user reward only informs about whether its own packet was successfully transmitted or not; (ii) in Scenario 2, each user reward may carry information about the other interfering user packets. The performances of the proposed algorithm and the MAB techniques are compared in terms of the successful transmission rate. The simulation results prove that the MAB algorithms show a better performance in the second scenario compared to the first one. However, in both scenarios, the proposed algorithm outperforms the MAB techniques with a lower complexity at user equipment.

scholarly journals Is Satellite Ahead of Terrestrial in Deploying NOMA for Massive Machine-Type Communications?

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4290
Author(s):  
Antonio Arcidiacono ◽  
Daniele Finocchiaro ◽  
Riccardo De Gaudenzi ◽  
Oscar del Rio-Herrero ◽  
Stefano Cioni ◽  
...  
Keyword(s):  
Multiple Access ◽  
Random Access ◽  
Satellite Network ◽  
Service Cost ◽  
Satellite Technology ◽  
Machine Type ◽  
Ground Segment ◽  
Machine Type Communications ◽  
Technical Solutions ◽  
Access Technique

Non-orthogonal multiple access (NOMA) technologies are considered key technologies for terrestrial 5G massive machine-type communications (mMTC) applications. It is less known that NOMA techniques were pioneered about ten years ago in the satellite domain to match the growing demand for mMTC services. This paper presents the key features of the first NOMA-based satellite network, presenting not only the underlying technical solutions and measured performance but also the related deployment over the Eutelsat satellite fleet. In particular, we describe the specific ground segment developments for the user terminals and the gateway station. It is shown that the developed solution, based on an Enhanced Spread ALOHA random access technique, achieves an unprecedented throughput, scalability and service cost and is well matched to several mMTC satellite use cases. The ongoing R&D lines covering both the ground segment capabilities enhancement and the extension to satellite on-board packet demodulation are also outlined. These pioneering NOMA satellite technology developments and in-the-field deployments open up the possibility of developing and exploiting 5G mMTC satellite- and terrestrial-based systems in a synergic and interoperable architecture.

scholarly journals Numerous Factors Affecting Performance of NOMA for Massive Machine Type Communications in B5G Systems

2021 ◽  
Vol 2 ◽  
Author(s):  
Chunlin Yan ◽  
Wei Liu ◽  
Hongwei Yuan
Keyword(s):  
Communication Systems ◽  
Multiple Access ◽  
Channel Decoding ◽  
Factors Affecting ◽  
Analysis And Evaluation ◽  
Machine Type ◽  
Fifth Generation ◽  
Machine Type Communications ◽  
Repetition Number ◽  
Factors Affecting Performance

Massive machine type communications (mMTC) are one of the critical requirements for beyond fifth generation (B5G) communication systems. Services for a huge number of user terminals should be provided simultaneously due to the explosive development of mMTC. It is proved that non-orthogonal multiple access (NOMA) is effective in satisfying such a requirement. In this paper we evaluate the impacts of numerous factors, such as channel encoding, channel decoding, repetition number, multi-user detector, and number of receiver antennas, on the performance of NOMA. It is surprised to find that some conclusions drawn from orthogonal multiple access system may do not hold anymore for NOMA systems. The factors which have significant impact on the performance of NOMA should be paid more attention to in the system design. The analysis and evaluation results shine more light on how to design an effect NOMA scheme by considering both transmitter and receiver to fulfill the requirements of mMTC for B5G systems.

Coded Tandem Spreading Multiple Access for Massive Machine-Type Communications

2018 ◽  
Vol 25 (2) ◽  
pp. 75-81 ◽  
Author(s):  
Guoyu Ma ◽  
Bo Ai ◽  
Fanggang Wang ◽  
Xia Chen ◽  
Zhangdui Zhong ◽  
...  
Keyword(s):  
Multiple Access ◽  
Machine Type ◽  
Machine Type Communications

Reducing the Modem Complexity and Achieving Deep Coverage in LTE for Machine-Type Communications

2016 ◽  
Author(s):  
Vidit Saxena ◽  
Johan Bergman ◽  
Yufei Blankenship ◽  
Anders Wallen ◽  
Hazhir Shokri Razaghi
Keyword(s):  
Machine Type ◽  
Machine Type Communications
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