GFDM-Based Asynchronous Grant-Free Multiple-Access
For next-generation Internet-of-Things (IoT) networks, asynchronous instant transmission has attracted increasing research interest with the expectation of achieving near-zero latency without excessive initiation procedure. However, in an asynchronous multiple-access scenario, there exist significan...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9736963/ |
| _version_ | 1819159765826142208 |
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| author | Yeongjun Kim Harim Lee Maximilian Matthe Gerhard Fettweis Hyun Jong Yang |
| author_facet | Yeongjun Kim Harim Lee Maximilian Matthe Gerhard Fettweis Hyun Jong Yang |
| author_sort | Yeongjun Kim |
| collection | DOAJ |
| description | For next-generation Internet-of-Things (IoT) networks, asynchronous instant transmission has attracted increasing research interest with the expectation of achieving near-zero latency without excessive initiation procedure. However, in an asynchronous multiple-access scenario, there exist significant inter-carrier interference between sub-carriers allocated to different users. To suppress out-of-band emission (OOBE) of each sub-carrier, a new generalized frequency division multiplexing (GFDM) has been proposed, which has lower OOBE than the conventional orthogonal frequency division multiplexing (OFDM). In this paper, by using GFDM, two types of receivers are proposed with the aim of reducing latency and improving throughput: a GFDM-based minimum mean square error (MMSE) receiver and a GFDM-based MMSE-successive interference cancellation (SIC) receiver. Then, we develop a lightweight scheme using an <inline-formula> <tex-math notation="LaTeX">$\epsilon $ </tex-math></inline-formula>-conservative rate control with GFDM-based MMSE receivers and also invent a performance-focused scheme using an advanced rate control with GFDM-based MMSE-SIC receivers. In particular, the latter scheme provides higher throughput with limited increase in computational load of user equipments. Numerical results show that with a high successful transmission probability higher than 99 %, the performance-focused scheme and the lightweight scheme achieve up to 85 % and up to 70 % higher throughput compared to the conventional OFDM-based asynchronous multiple-access scheme, respectively. Furthermore, since our proposal does not require any centralized user scheduling or initiation procedure, it presents a significant reduction in latency compared to the existing low-latency technologies. |
| first_indexed | 2024-12-22T16:45:46Z |
| format | Article |
| id | doaj.art-6cb270dc2dfc4c95a3bd55207db0f003 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-22T16:45:46Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-6cb270dc2dfc4c95a3bd55207db0f0032022-12-21T18:19:44ZengIEEEIEEE Access2169-35362022-01-0110310123103010.1109/ACCESS.2022.31600179736963GFDM-Based Asynchronous Grant-Free Multiple-AccessYeongjun Kim0https://orcid.org/0000-0002-3973-6002Harim Lee1Maximilian Matthe2Gerhard Fettweis3https://orcid.org/0000-0003-4622-1311Hyun Jong Yang4https://orcid.org/0000-0002-0717-3794Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of KoreaSchool of Electronic Engineering, Kumoh National Institute of Technology, Gumi, Gyungbuk, Republic of KoreaBarkhausen Institut, Dresden, GermanyVodafone Chair Mobile Communication Systems, Technische Universität (TU) Dresden, Dresden, GermanyDepartment of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of KoreaFor next-generation Internet-of-Things (IoT) networks, asynchronous instant transmission has attracted increasing research interest with the expectation of achieving near-zero latency without excessive initiation procedure. However, in an asynchronous multiple-access scenario, there exist significant inter-carrier interference between sub-carriers allocated to different users. To suppress out-of-band emission (OOBE) of each sub-carrier, a new generalized frequency division multiplexing (GFDM) has been proposed, which has lower OOBE than the conventional orthogonal frequency division multiplexing (OFDM). In this paper, by using GFDM, two types of receivers are proposed with the aim of reducing latency and improving throughput: a GFDM-based minimum mean square error (MMSE) receiver and a GFDM-based MMSE-successive interference cancellation (SIC) receiver. Then, we develop a lightweight scheme using an <inline-formula> <tex-math notation="LaTeX">$\epsilon $ </tex-math></inline-formula>-conservative rate control with GFDM-based MMSE receivers and also invent a performance-focused scheme using an advanced rate control with GFDM-based MMSE-SIC receivers. In particular, the latter scheme provides higher throughput with limited increase in computational load of user equipments. Numerical results show that with a high successful transmission probability higher than 99 %, the performance-focused scheme and the lightweight scheme achieve up to 85 % and up to 70 % higher throughput compared to the conventional OFDM-based asynchronous multiple-access scheme, respectively. Furthermore, since our proposal does not require any centralized user scheduling or initiation procedure, it presents a significant reduction in latency compared to the existing low-latency technologies.https://ieeexplore.ieee.org/document/9736963/Asynchronous multiple-accessgeneralized frequency division multiplexing (GFDM)out-of-band emission (OOBE)minimum mean square error (MMSE) |
| spellingShingle | Yeongjun Kim Harim Lee Maximilian Matthe Gerhard Fettweis Hyun Jong Yang GFDM-Based Asynchronous Grant-Free Multiple-Access IEEE Access Asynchronous multiple-access generalized frequency division multiplexing (GFDM) out-of-band emission (OOBE) minimum mean square error (MMSE) |
| title | GFDM-Based Asynchronous Grant-Free Multiple-Access |
| title_full | GFDM-Based Asynchronous Grant-Free Multiple-Access |
| title_fullStr | GFDM-Based Asynchronous Grant-Free Multiple-Access |
| title_full_unstemmed | GFDM-Based Asynchronous Grant-Free Multiple-Access |
| title_short | GFDM-Based Asynchronous Grant-Free Multiple-Access |
| title_sort | gfdm based asynchronous grant free multiple access |
| topic | Asynchronous multiple-access generalized frequency division multiplexing (GFDM) out-of-band emission (OOBE) minimum mean square error (MMSE) |
| url | https://ieeexplore.ieee.org/document/9736963/ |
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