A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology
To simultaneously address dual demands on the spectral efficiency and the data transmission rate of maritime communications, in this paper, a novel maritime communication technology based on time-delay overlapping modulation (TDOM) is proposed. In TDOM, multiple carriers are delayed in turn and dire...
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| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/13/2/345 |
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| author | Xinyu Dou Teng Ma Dequn Liang |
| author_facet | Xinyu Dou Teng Ma Dequn Liang |
| author_sort | Xinyu Dou |
| collection | DOAJ |
| description | To simultaneously address dual demands on the spectral efficiency and the data transmission rate of maritime communications, in this paper, a novel maritime communication technology based on time-delay overlapping modulation (TDOM) is proposed. In TDOM, multiple carriers are delayed in turn and directly overlapped in the time domain to form the communication symbol. In this way, the strict orthogonality between carriers can be broken through, indicating that the frequency interval between carriers can be much narrower than ever. In other words, TDOM can achieve non-orthogonal communication and realize both higher spectral efficiency and a higher maritime communication rate. The system architecture is designed, and its performance is analyzed and compared with that of other typical maritime communication technologies such as the very-high-frequency data exchange system (VDES). It is shown that TDOM can reach up to 20 times the peak communication rate and the spectral efficiency of VDES. As a digital modulation technology implemented in the physical layer, the proposed TDOM can be extended to other communication systems such as satellite communications or 4G/5G based off-shore communications. |
| format | Article |
| id | doaj-art-0e018399996f4eee8765080ab8aad23e |
| institution | OA Journals |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-0e018399996f4eee8765080ab8aad23e2025-08-20T02:04:06ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-02-0113234510.3390/jmse13020345A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication TechnologyXinyu Dou0Teng Ma1Dequn Liang2College of Information Science and Technology, Dalian Maritime University, Dalian 116026, ChinaCollege of Information Science and Technology, Dalian Maritime University, Dalian 116026, ChinaCollege of Information Science and Technology, Dalian Maritime University, Dalian 116026, ChinaTo simultaneously address dual demands on the spectral efficiency and the data transmission rate of maritime communications, in this paper, a novel maritime communication technology based on time-delay overlapping modulation (TDOM) is proposed. In TDOM, multiple carriers are delayed in turn and directly overlapped in the time domain to form the communication symbol. In this way, the strict orthogonality between carriers can be broken through, indicating that the frequency interval between carriers can be much narrower than ever. In other words, TDOM can achieve non-orthogonal communication and realize both higher spectral efficiency and a higher maritime communication rate. The system architecture is designed, and its performance is analyzed and compared with that of other typical maritime communication technologies such as the very-high-frequency data exchange system (VDES). It is shown that TDOM can reach up to 20 times the peak communication rate and the spectral efficiency of VDES. As a digital modulation technology implemented in the physical layer, the proposed TDOM can be extended to other communication systems such as satellite communications or 4G/5G based off-shore communications.https://www.mdpi.com/2077-1312/13/2/345maritime communicationtime-delay overlapping modulationspectral efficiencycommunication rate |
| spellingShingle | Xinyu Dou Teng Ma Dequn Liang A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology Journal of Marine Science and Engineering maritime communication time-delay overlapping modulation spectral efficiency communication rate |
| title | A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology |
| title_full | A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology |
| title_fullStr | A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology |
| title_full_unstemmed | A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology |
| title_short | A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology |
| title_sort | time delay overlapping modulation based maritime high speed and high spectral efficiency communication technology |
| topic | maritime communication time-delay overlapping modulation spectral efficiency communication rate |
| url | https://www.mdpi.com/2077-1312/13/2/345 |
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