Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging
Employing a cyclic prefixed OFDM (CP-OFDM) communication waveform for sensing has attracted extensive attention in vehicular integrated sensing and communications (ISAC). A unified sensing framework was developed recently, enabling CP-OFDM sensing to surpass the conventional limits imposed by underl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/22/9015 |
| _version_ | 1827643676225961984 |
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| author | Kai Wu J. Andrew Zhang Xiaojing Huang Y. Jay Guo |
| author_facet | Kai Wu J. Andrew Zhang Xiaojing Huang Y. Jay Guo |
| author_sort | Kai Wu |
| collection | DOAJ |
| description | Employing a cyclic prefixed OFDM (CP-OFDM) communication waveform for sensing has attracted extensive attention in vehicular integrated sensing and communications (ISAC). A unified sensing framework was developed recently, enabling CP-OFDM sensing to surpass the conventional limits imposed by underlying communications. However, a false target issue still remains unsolved. In this paper, we investigate and solve this issue. Specifically, we unveil that false targets are caused by periodic cyclic prefixes (CPs) in CP-OFDM waveforms. We also derive the relation between the locations of false and true targets, and other features, e.g., strength, of false targets. Moreover, we develop an effective solution to remove false targets. Simulations are provided to confirm the validity of our analysis and the effectiveness of the proposed solution. In particular, our design can reduce the false alarm rate caused by false targets by over 50% compared with the prior art. |
| first_indexed | 2024-03-09T18:00:27Z |
| format | Article |
| id | doaj.art-d0207ad1baa14c27b4d68c4c738bbe83 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T18:00:27Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d0207ad1baa14c27b4d68c4c738bbe832023-11-24T09:59:34ZengMDPI AGSensors1424-82202022-11-012222901510.3390/s22229015Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended RangingKai Wu0J. Andrew Zhang1Xiaojing Huang2Y. Jay Guo3Global Big Data Technologies Centre (GBDTC), University of Technology Sydney (UTS), Sydney, NSW 2007, AustraliaGlobal Big Data Technologies Centre (GBDTC), University of Technology Sydney (UTS), Sydney, NSW 2007, AustraliaGlobal Big Data Technologies Centre (GBDTC), University of Technology Sydney (UTS), Sydney, NSW 2007, AustraliaGlobal Big Data Technologies Centre (GBDTC), University of Technology Sydney (UTS), Sydney, NSW 2007, AustraliaEmploying a cyclic prefixed OFDM (CP-OFDM) communication waveform for sensing has attracted extensive attention in vehicular integrated sensing and communications (ISAC). A unified sensing framework was developed recently, enabling CP-OFDM sensing to surpass the conventional limits imposed by underlying communications. However, a false target issue still remains unsolved. In this paper, we investigate and solve this issue. Specifically, we unveil that false targets are caused by periodic cyclic prefixes (CPs) in CP-OFDM waveforms. We also derive the relation between the locations of false and true targets, and other features, e.g., strength, of false targets. Moreover, we develop an effective solution to remove false targets. Simulations are provided to confirm the validity of our analysis and the effectiveness of the proposed solution. In particular, our design can reduce the false alarm rate caused by false targets by over 50% compared with the prior art.https://www.mdpi.com/1424-8220/22/22/9015integrated sensing and communications (ISAC)joint communications and sensing (JCAS)OFDMcyclic prefix (CP)false targets |
| spellingShingle | Kai Wu J. Andrew Zhang Xiaojing Huang Y. Jay Guo Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging Sensors integrated sensing and communications (ISAC) joint communications and sensing (JCAS) OFDM cyclic prefix (CP) false targets |
| title | Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging |
| title_full | Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging |
| title_fullStr | Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging |
| title_full_unstemmed | Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging |
| title_short | Removing False Targets for Cyclic Prefixed OFDM Sensing with Extended Ranging |
| title_sort | removing false targets for cyclic prefixed ofdm sensing with extended ranging |
| topic | integrated sensing and communications (ISAC) joint communications and sensing (JCAS) OFDM cyclic prefix (CP) false targets |
| url | https://www.mdpi.com/1424-8220/22/22/9015 |
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