Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications
The cellular network coexisting with device-to-device (D2D) communications has been studied extensively. Reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA) are promising technologies for the evolution of 5G, 6G and beyond. Besides, sparse code multiple access (SCMA) i...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10106248/ |
| _version_ | 1797835830268526592 |
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| author | Yukai Liu Wen Chen Hongying Tang Kunlun Wang |
| author_facet | Yukai Liu Wen Chen Hongying Tang Kunlun Wang |
| author_sort | Yukai Liu |
| collection | DOAJ |
| description | The cellular network coexisting with device-to-device (D2D) communications has been studied extensively. Reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA) are promising technologies for the evolution of 5G, 6G and beyond. Besides, sparse code multiple access (SCMA) is considered suitable for next-generation wireless network in code-domain NOMA. In this paper, we consider the RIS-aided uplink SCMA cellular network simultaneously with D2D users. We formulate the optimization problem which aims to maximize the cellular sum-rate by jointly designing D2D users’ resource block (RB) association, the transmitted power for both cellular users and D2D users, and the phase shifts at the RIS. The power limitation and users’ communication requirements are considered. The problem is non-convex, and it is challenging to solve it directly. To handle this optimization problem, we propose an efficient iterative algorithm based on block coordinate descent (BCD) method. The original problem is decoupled into three subproblems to solve separately. Simulation results demonstrate that the proposed scheme can significantly improve the sum-rate performance over various schemes. |
| first_indexed | 2024-04-09T14:58:50Z |
| format | Article |
| id | doaj.art-94898844ae2a4a2c91dd0ef2efbbc5fd |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-09T14:58:50Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-94898844ae2a4a2c91dd0ef2efbbc5fd2023-05-01T23:00:49ZengIEEEIEEE Access2169-35362023-01-0111399783998910.1109/ACCESS.2023.326928410106248Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D CommunicationsYukai Liu0https://orcid.org/0009-0002-5041-2014Wen Chen1https://orcid.org/0000-0003-2133-8679Hongying Tang2https://orcid.org/0000-0002-2606-9570Kunlun Wang3https://orcid.org/0000-0002-5727-5166Department of Electronic Engineering, Shanghai Institute of Advanced Communications and Data Sciences, Shanghai Jiao Tong University, Shanghai, ChinaDepartment of Electronic Engineering, Shanghai Institute of Advanced Communications and Data Sciences, Shanghai Jiao Tong University, Shanghai, ChinaScience and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, ChinaSchool of Communication and Electronic Engineering, East China Normal University, Shanghai, ChinaThe cellular network coexisting with device-to-device (D2D) communications has been studied extensively. Reconfigurable intelligent surface (RIS) and non-orthogonal multiple access (NOMA) are promising technologies for the evolution of 5G, 6G and beyond. Besides, sparse code multiple access (SCMA) is considered suitable for next-generation wireless network in code-domain NOMA. In this paper, we consider the RIS-aided uplink SCMA cellular network simultaneously with D2D users. We formulate the optimization problem which aims to maximize the cellular sum-rate by jointly designing D2D users’ resource block (RB) association, the transmitted power for both cellular users and D2D users, and the phase shifts at the RIS. The power limitation and users’ communication requirements are considered. The problem is non-convex, and it is challenging to solve it directly. To handle this optimization problem, we propose an efficient iterative algorithm based on block coordinate descent (BCD) method. The original problem is decoupled into three subproblems to solve separately. Simulation results demonstrate that the proposed scheme can significantly improve the sum-rate performance over various schemes.https://ieeexplore.ieee.org/document/10106248/Reconfigurable intelligent surface (RIS)non-orthogonal multiple access (NOMA)resource allocationdevice-to-device (D2D)sparse code multiple access (SCMA) |
| spellingShingle | Yukai Liu Wen Chen Hongying Tang Kunlun Wang Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications IEEE Access Reconfigurable intelligent surface (RIS) non-orthogonal multiple access (NOMA) resource allocation device-to-device (D2D) sparse code multiple access (SCMA) |
| title | Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications |
| title_full | Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications |
| title_fullStr | Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications |
| title_full_unstemmed | Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications |
| title_short | Resource Allocation in the RIS Assisted SCMA Cellular Network Coexisting With D2D Communications |
| title_sort | resource allocation in the ris assisted scma cellular network coexisting with d2d communications |
| topic | Reconfigurable intelligent surface (RIS) non-orthogonal multiple access (NOMA) resource allocation device-to-device (D2D) sparse code multiple access (SCMA) |
| url | https://ieeexplore.ieee.org/document/10106248/ |
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