Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation
Abstract The adaptive interference cancellation technique has been widely utilized in radar, GPS, data link, etc., systems to address challenges from external interference, such as co-site and hostile interference. Since the anti-jamming performance of the adaptive interference cancellation techniqu...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13634-023-01058-3 |
| _version_ | 1797555722300424192 |
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| author | Yunshuo Zhang Fangmin He Hongbo Liu Yaxing Li Zhong Yang Ze Wang Jin Meng |
| author_facet | Yunshuo Zhang Fangmin He Hongbo Liu Yaxing Li Zhong Yang Ze Wang Jin Meng |
| author_sort | Yunshuo Zhang |
| collection | DOAJ |
| description | Abstract The adaptive interference cancellation technique has been widely utilized in radar, GPS, data link, etc., systems to address challenges from external interference, such as co-site and hostile interference. Since the anti-jamming performance of the adaptive interference cancellation technique is sensitive to group delay mismatch between channels, the group delay mismatch becomes one of the main factors that limit the system’s anti-jamming capability. However, the traditional adaptive interference cancellation system’s mathematical model cannot quantitatively characterize the group delay mismatch effect on the wideband interference cancellation performance. In this paper, the mathematical model of the wideband adaptive spatial interference cancellation (ASIC) system is established, which considers the group delay mismatch, to quantitatively analyze the impact of group delay mismatch on the hostile interference cancellation. The mathematical model utilizes the weighted multi-tone signals to fit the wideband interference, and then, delay differences are attached to each tone signal to simulate the group delay mismatch. Then, the analytic expressions of weight and interference cancellation ratio are derived, which consider the interference bandwidth and group delay mismatch, to quantitatively analyze the group delay mismatch effect on the anti-jamming performance of the wideband ASIC system. Simulation results indicate that the theoretical analysis based on the mathematical model of wideband ASIC system are accurate, which can achieve the quantitative analysis of the group delay mismatch effect on the WIC performance. |
| first_indexed | 2024-03-10T16:51:30Z |
| format | Article |
| id | doaj.art-1f0618059ec14c5f9cb31c1200971d8c |
| institution | Directory Open Access Journal |
| issn | 1687-6180 |
| language | English |
| last_indexed | 2024-03-10T16:51:30Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-1f0618059ec14c5f9cb31c1200971d8c2023-11-20T11:16:52ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61802023-09-012023111810.1186/s13634-023-01058-3Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellationYunshuo Zhang0Fangmin He1Hongbo Liu2Yaxing Li3Zhong Yang4Ze Wang5Jin Meng6National Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringNational Key Laboratory of Electromagnetic Energy, Naval University of EngineeringAbstract The adaptive interference cancellation technique has been widely utilized in radar, GPS, data link, etc., systems to address challenges from external interference, such as co-site and hostile interference. Since the anti-jamming performance of the adaptive interference cancellation technique is sensitive to group delay mismatch between channels, the group delay mismatch becomes one of the main factors that limit the system’s anti-jamming capability. However, the traditional adaptive interference cancellation system’s mathematical model cannot quantitatively characterize the group delay mismatch effect on the wideband interference cancellation performance. In this paper, the mathematical model of the wideband adaptive spatial interference cancellation (ASIC) system is established, which considers the group delay mismatch, to quantitatively analyze the impact of group delay mismatch on the hostile interference cancellation. The mathematical model utilizes the weighted multi-tone signals to fit the wideband interference, and then, delay differences are attached to each tone signal to simulate the group delay mismatch. Then, the analytic expressions of weight and interference cancellation ratio are derived, which consider the interference bandwidth and group delay mismatch, to quantitatively analyze the group delay mismatch effect on the anti-jamming performance of the wideband ASIC system. Simulation results indicate that the theoretical analysis based on the mathematical model of wideband ASIC system are accurate, which can achieve the quantitative analysis of the group delay mismatch effect on the WIC performance.https://doi.org/10.1186/s13634-023-01058-3Group delay mismatchAdaptive spatial interference cancellationWideband interferenceWeight characteristics |
| spellingShingle | Yunshuo Zhang Fangmin He Hongbo Liu Yaxing Li Zhong Yang Ze Wang Jin Meng Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation EURASIP Journal on Advances in Signal Processing Group delay mismatch Adaptive spatial interference cancellation Wideband interference Weight characteristics |
| title | Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| title_full | Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| title_fullStr | Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| title_full_unstemmed | Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| title_short | Modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| title_sort | modeling and analysis for group delay mismatch effect on wideband adaptive spatial interference cancellation |
| topic | Group delay mismatch Adaptive spatial interference cancellation Wideband interference Weight characteristics |
| url | https://doi.org/10.1186/s13634-023-01058-3 |
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