ID | 64188 |
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Author |
Yamagami, Taichi
Graduate School of Natural Science and Technology, Okayama University
Denno, Satoshi
Graduate School of Natural Science and Technology, Okayama University
Kaken ID
Hou, Yafei
Graduate School of Natural Science and Technology, Okayama University
ORCID
Kaken ID
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Abstract | In this paper, we propose a non-orthogonal multiple access with adaptive resource allocation. The proposed non-orthogonal multiple access assigns multiple frequency resources for each device to send packets. Even if the number of devices is more than that of the available frequency resources, the proposed non-orthogonal access allows all the devices to transmit their packets simultaneously for high capacity massive machine-type communications (mMTC). Furthermore, this paper proposes adaptive resource allocation algorithms based on factor graphs that adaptively allocate the frequency resources to the devices for improvement of the transmission performances. This paper proposes two allocation algorithms for the proposed non-orthogonal multiple access. This paper shows that the proposed non-orthogonal multiple access achieves superior transmission performance when the number of the devices is 50% greater than the amount of the resource, i.e., the overloading ratio of 1.5, even without the adaptive resource allocation. The adaptive resource allocation enables the proposed non-orthogonal access to attain a gain of about 5dB at the BER of 10-4.
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Keywords | non-orthogonal multiple access
message passing algorithm
factor graphs
log-likelihood ratio
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Published Date | 2022-10-01
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Publication Title |
IEICE Transactions on Communications
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Volume | volumeE105.B
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Issue | issue10
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Publisher | Institute of Electronics, Information and Communications Engineers (IEICE)
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Start Page | 1258
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End Page | 1267
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ISSN | 0916-8516
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2022 The Institute of Electronics, Information and Communication Engineers
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File Version | publisher
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DOI | |
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Related Url | isVersionOf https://doi.org/10.1587/transcom.2021ebp3213
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Funder Name |
Japan Society for the Promotion of Science
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助成番号 | JP21K04061
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