A Grant-free Coded Random Access Scheme for Near-field Communications
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913999998681088 |
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| author | Testi, Enrico Torcolacci, Giulia Decarli, Nicolò Dardari, Davide Paolini, Enrico |
| author_facet | Testi, Enrico Torcolacci, Giulia Decarli, Nicolò Dardari, Davide Paolini, Enrico |
| contents | The industrial Internet of things (IIoT) is revolutionizing industrial processes by facilitating massive machine-type communications among countless interconnected devices. To efficiently handle the resulting large-scale and sporadic traffic, grant-free random access protocols-especially coded random access (CRA)-have emerged as scalable and reliable solutions. At the same time, advancements in wireless hardware, including extremely large-scale MIMO arrays and high-frequency communication (e.g., mmWave, Terahertz), are pushing network operations into the near-field propagation regime, allowing for dense connectivity and enhanced spatial multiplexing. This paper proposes an innovative approach that combines near-field spatial multiplexing with the interference mitigation capabilities of CRA, utilizing an extremely large aperture array at the access point. This integration improves reliability and reduces access latency, offering a robust framework for IIoT connectivity in next-generation 6G networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_15673 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Grant-free Coded Random Access Scheme for Near-field Communications Testi, Enrico Torcolacci, Giulia Decarli, Nicolò Dardari, Davide Paolini, Enrico Signal Processing The industrial Internet of things (IIoT) is revolutionizing industrial processes by facilitating massive machine-type communications among countless interconnected devices. To efficiently handle the resulting large-scale and sporadic traffic, grant-free random access protocols-especially coded random access (CRA)-have emerged as scalable and reliable solutions. At the same time, advancements in wireless hardware, including extremely large-scale MIMO arrays and high-frequency communication (e.g., mmWave, Terahertz), are pushing network operations into the near-field propagation regime, allowing for dense connectivity and enhanced spatial multiplexing. This paper proposes an innovative approach that combines near-field spatial multiplexing with the interference mitigation capabilities of CRA, utilizing an extremely large aperture array at the access point. This integration improves reliability and reduces access latency, offering a robust framework for IIoT connectivity in next-generation 6G networks. |
| title | A Grant-free Coded Random Access Scheme for Near-field Communications |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2508.15673 |