Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication
Aiming at the problem that the frequency offset in the non-cooperative communication system causes the received signal spectrum to shift, which exceeds the passband of the matched filter and affects the subsequent demodulation, a parameter estimation and signal detection algorithm based on adaptive...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2021-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2021/05/matecconf_cscns20_04002.pdf |
| _version_ | 1819285053452058624 |
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| author | He Zilong Sun Peng Gong Kexian Jiang Hua |
| author_facet | He Zilong Sun Peng Gong Kexian Jiang Hua |
| author_sort | He Zilong |
| collection | DOAJ |
| description | Aiming at the problem that the frequency offset in the non-cooperative communication system causes the received signal spectrum to shift, which exceeds the passband of the matched filter and affects the subsequent demodulation, a parameter estimation and signal detection algorithm based on adaptive capture is proposed by this paper, which is more convenient for hardware implementation and consumes less resources. The algorithm is divided into three parts. Firstly, use the correlation value between the signal and the preamble sequence as the basis for frequency capture. Secondly, the frequency is accurately estimated based on the interpolation algorithm. Finally, the phase-locked loop structure is used to track the frequency according to the characteristics of the frequency gradually changing and the signal frequency offset is eliminated in the Digital Down Converter stage. It provides necessary conditions for accurate signal detection and phase estimation. The simulation results show that the algorithm has high estimation accuracy, wide esti-mation range and low complexity. It can also achieve better estimation accuracy and detection performance under low signal-to-noise ratio. |
| first_indexed | 2024-12-24T01:57:09Z |
| format | Article |
| id | doaj.art-0bc7cb81f3d04b76991892036b3586d4 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-24T01:57:09Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-0bc7cb81f3d04b76991892036b3586d42022-12-21T17:21:32ZengEDP SciencesMATEC Web of Conferences2261-236X2021-01-013360400210.1051/matecconf/202133604002matecconf_cscns20_04002Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communicationHe ZilongSun PengGong KexianJiang HuaAiming at the problem that the frequency offset in the non-cooperative communication system causes the received signal spectrum to shift, which exceeds the passband of the matched filter and affects the subsequent demodulation, a parameter estimation and signal detection algorithm based on adaptive capture is proposed by this paper, which is more convenient for hardware implementation and consumes less resources. The algorithm is divided into three parts. Firstly, use the correlation value between the signal and the preamble sequence as the basis for frequency capture. Secondly, the frequency is accurately estimated based on the interpolation algorithm. Finally, the phase-locked loop structure is used to track the frequency according to the characteristics of the frequency gradually changing and the signal frequency offset is eliminated in the Digital Down Converter stage. It provides necessary conditions for accurate signal detection and phase estimation. The simulation results show that the algorithm has high estimation accuracy, wide esti-mation range and low complexity. It can also achieve better estimation accuracy and detection performance under low signal-to-noise ratio.https://www.matec-conferences.org/articles/matecconf/pdf/2021/05/matecconf_cscns20_04002.pdf |
| spellingShingle | He Zilong Sun Peng Gong Kexian Jiang Hua Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication MATEC Web of Conferences |
| title | Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication |
| title_full | Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication |
| title_fullStr | Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication |
| title_full_unstemmed | Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication |
| title_short | Parameter estimation and signal detection algorithm based on adaptive capture in non-cooperative communication |
| title_sort | parameter estimation and signal detection algorithm based on adaptive capture in non cooperative communication |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2021/05/matecconf_cscns20_04002.pdf |
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