A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals
The chaotic direct sequence spread spectrum (CD3S) is one of the distinguished techniques providing physical layer secrecy and low probability of intercept (LPI) in wireless communication. Due to the noise-like and aperiodic characteristics of chaotic signals, the synchronization of CD3S signals is...
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| Format: | Article |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9229130/ |
| _version_ | 1818662417358389248 |
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| author | Guogang Yuan Zili Chen Xijun Gao Jiangyan He Hongxia Jia |
| author_facet | Guogang Yuan Zili Chen Xijun Gao Jiangyan He Hongxia Jia |
| author_sort | Guogang Yuan |
| collection | DOAJ |
| description | The chaotic direct sequence spread spectrum (CD3S) is one of the distinguished techniques providing physical layer secrecy and low probability of intercept (LPI) in wireless communication. Due to the noise-like and aperiodic characteristics of chaotic signals, the synchronization of CD3S signals is a challenging issue. A synchronization approach for aperiodic CD3S signals based on bidirectional correlation search (BDCS) is proposed. Through a joint acquisition of forward frequency domain matched filtering (FDMF) and backward FDMF, the synchronization module aligns received CD3S signals with local chaotic sequences without aid of the pilot signal. The probability distribution of correlator output is derived with additive white Gaussian noise and narrowband jamming. The probability of detection, probability of false alarm, and bit error rate are analyzed mathematically. An approximate solution of the local optimal acquisition threshold coefficient is obtained. These theoretical analyses are verified by numerical simulations, the results of which demonstrate that the proposed synchronization approach enables the CD3S system to resist interception and adapt to the environment with low signal-to-noise and signal-to-jammer ratios. |
| first_indexed | 2024-12-17T05:00:37Z |
| format | Article |
| id | doaj.art-3986b0799a2048f1bebf02d4faf932f2 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-17T05:00:37Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-3986b0799a2048f1bebf02d4faf932f22022-12-21T22:02:33ZengIEEEIEEE Access2169-35362020-01-01819039019040210.1109/ACCESS.2020.30319069229130A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum SignalsGuogang Yuan0https://orcid.org/0000-0002-5189-9146Zili Chen1Xijun Gao2Jiangyan He3Hongxia Jia4Department of UAV Engineering, Shijiazhuang Campus of AEU, Shijiazhuang, ChinaDepartment of UAV Engineering, Shijiazhuang Campus of AEU, Shijiazhuang, ChinaDepartment of UAV Engineering, Shijiazhuang Campus of AEU, Shijiazhuang, ChinaDepartment of UAV Engineering, Shijiazhuang Campus of AEU, Shijiazhuang, ChinaDepartment of UAV Engineering, Shijiazhuang Campus of AEU, Shijiazhuang, ChinaThe chaotic direct sequence spread spectrum (CD3S) is one of the distinguished techniques providing physical layer secrecy and low probability of intercept (LPI) in wireless communication. Due to the noise-like and aperiodic characteristics of chaotic signals, the synchronization of CD3S signals is a challenging issue. A synchronization approach for aperiodic CD3S signals based on bidirectional correlation search (BDCS) is proposed. Through a joint acquisition of forward frequency domain matched filtering (FDMF) and backward FDMF, the synchronization module aligns received CD3S signals with local chaotic sequences without aid of the pilot signal. The probability distribution of correlator output is derived with additive white Gaussian noise and narrowband jamming. The probability of detection, probability of false alarm, and bit error rate are analyzed mathematically. An approximate solution of the local optimal acquisition threshold coefficient is obtained. These theoretical analyses are verified by numerical simulations, the results of which demonstrate that the proposed synchronization approach enables the CD3S system to resist interception and adapt to the environment with low signal-to-noise and signal-to-jammer ratios.https://ieeexplore.ieee.org/document/9229130/Chaotic direct sequence spread spectrum (CD3S)synchronizationbidirectional correlation searchanti-interceptionnarrowband jamminglocal optimal acquisition threshold coefficient |
| spellingShingle | Guogang Yuan Zili Chen Xijun Gao Jiangyan He Hongxia Jia A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals IEEE Access Chaotic direct sequence spread spectrum (CD3S) synchronization bidirectional correlation search anti-interception narrowband jamming local optimal acquisition threshold coefficient |
| title | A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals |
| title_full | A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals |
| title_fullStr | A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals |
| title_full_unstemmed | A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals |
| title_short | A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals |
| title_sort | synchronization approach based on bidirectional correlation search for aperiodic chaotic direct sequence spread spectrum signals |
| topic | Chaotic direct sequence spread spectrum (CD3S) synchronization bidirectional correlation search anti-interception narrowband jamming local optimal acquisition threshold coefficient |
| url | https://ieeexplore.ieee.org/document/9229130/ |
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