OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals
Internet of Things (IoT) is an emerging network that aims to connect massive devices for exchanging information with each other. There have been various IoT access techniques, such as RFID, Blue Tooth, WiFi, LoRa and cellular IoT, in which cellular IoT has advantages in wide coverage and the economi...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9046790/ |
| _version_ | 1819082810488520704 |
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| author | Rui Chen Zhengjuan Tian Hong Zhou Wen-Xuan Long |
| author_facet | Rui Chen Zhengjuan Tian Hong Zhou Wen-Xuan Long |
| author_sort | Rui Chen |
| collection | DOAJ |
| description | Internet of Things (IoT) is an emerging network that aims to connect massive devices for exchanging information with each other. There have been various IoT access techniques, such as RFID, Blue Tooth, WiFi, LoRa and cellular IoT, in which cellular IoT has advantages in wide coverage and the economical reuse of exsiting cellular infrastructure. However, cellular base station (BS) consumes most of the energy in wireless communication networks. Therefore, improving the energy efficiency (EE) of the BS is of great importance to make cellular IoT green. In this paper, we propose a novel orbital angular momentum (OAM)-based concentric spatial division multiplexing (CSDM) downlink transmission scheme for cellular IoT terminals. Specifically, the hybrid radio frequency (RF) and baseband CSDM scheme exploits analog OAM beamforming to generate concentric annular beams for covering cell-center, cell-mediate and cell-edge groups of users, and digital space-frequency vector perturbation (SFVP) precoding and orthogonal frequency division multiple access (OFDMA) to mitigate inter- and intra-group interferences. Mathematical analysis and numerical simulations validate that the IoT BS with the proposed CSDM-SFVP scheme has better bit error rate (BER) and EE performance than traditional massive multiple-input multiple-output (MIMO) BS with full-baseband zero-forcing (FBZF) precoding in a IoT cell. |
| first_indexed | 2024-12-21T20:22:35Z |
| format | Article |
| id | doaj.art-0c75b7018f4447d3b9835a86e8fa0302 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-21T20:22:35Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-0c75b7018f4447d3b9835a86e8fa03022022-12-21T18:51:27ZengIEEEIEEE Access2169-35362020-01-018596595966910.1109/ACCESS.2020.29832229046790OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT TerminalsRui Chen0https://orcid.org/0000-0002-3690-7902Zhengjuan Tian1Hong Zhou2Wen-Xuan Long3State Key Laboratory of ISN, School of Telecommunications Engineering, Xidian University, Xi’an, ChinaState Key Laboratory of ISN, School of Telecommunications Engineering, Xidian University, Xi’an, ChinaState Key Laboratory of ISN, School of Telecommunications Engineering, Xidian University, Xi’an, ChinaState Key Laboratory of ISN, School of Telecommunications Engineering, Xidian University, Xi’an, ChinaInternet of Things (IoT) is an emerging network that aims to connect massive devices for exchanging information with each other. There have been various IoT access techniques, such as RFID, Blue Tooth, WiFi, LoRa and cellular IoT, in which cellular IoT has advantages in wide coverage and the economical reuse of exsiting cellular infrastructure. However, cellular base station (BS) consumes most of the energy in wireless communication networks. Therefore, improving the energy efficiency (EE) of the BS is of great importance to make cellular IoT green. In this paper, we propose a novel orbital angular momentum (OAM)-based concentric spatial division multiplexing (CSDM) downlink transmission scheme for cellular IoT terminals. Specifically, the hybrid radio frequency (RF) and baseband CSDM scheme exploits analog OAM beamforming to generate concentric annular beams for covering cell-center, cell-mediate and cell-edge groups of users, and digital space-frequency vector perturbation (SFVP) precoding and orthogonal frequency division multiple access (OFDMA) to mitigate inter- and intra-group interferences. Mathematical analysis and numerical simulations validate that the IoT BS with the proposed CSDM-SFVP scheme has better bit error rate (BER) and EE performance than traditional massive multiple-input multiple-output (MIMO) BS with full-baseband zero-forcing (FBZF) precoding in a IoT cell.https://ieeexplore.ieee.org/document/9046790/Internet of things (IoT)orbital angular momentum (OAM)uniform circular array (UCA)massive machine-type communications (mMTC)concentric spatial division multiplexing (CSDM) |
| spellingShingle | Rui Chen Zhengjuan Tian Hong Zhou Wen-Xuan Long OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals IEEE Access Internet of things (IoT) orbital angular momentum (OAM) uniform circular array (UCA) massive machine-type communications (mMTC) concentric spatial division multiplexing (CSDM) |
| title | OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals |
| title_full | OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals |
| title_fullStr | OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals |
| title_full_unstemmed | OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals |
| title_short | OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals |
| title_sort | oam based concentric spatial division multiplexing for cellular iot terminals |
| topic | Internet of things (IoT) orbital angular momentum (OAM) uniform circular array (UCA) massive machine-type communications (mMTC) concentric spatial division multiplexing (CSDM) |
| url | https://ieeexplore.ieee.org/document/9046790/ |
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