Detection of partial-band noise interference in slow FH/QPSK systems
In this paper, we propose a detection algorithm to detect unknown partial-band noise interference (PBNI) which is frequently encountered in slow frequency-hopped spread spectrum (SFH-SS) systems. The algorithm utilizes a simple hypothesis testing to decide presence of PBNI in any particular hop afte...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/106797 http://hdl.handle.net/10220/17756 http://dx.doi.org/10.1109/ISCAS.2012.6271467 |
| _version_ | 1826127881470738432 |
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| author | Aung, Aye Teh, Kah Chan Li, Kwok Hung |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Aung, Aye Teh, Kah Chan Li, Kwok Hung |
| author_sort | Aung, Aye |
| collection | NTU |
| description | In this paper, we propose a detection algorithm to detect unknown partial-band noise interference (PBNI) which is frequently encountered in slow frequency-hopped spread spectrum (SFH-SS) systems. The algorithm utilizes a simple hypothesis testing to decide presence of PBNI in any particular hop after dehopping. A suitable threshold level is first derived to detect the PBNI by analyzing the statistical property of the outputs of two correlators used for quadrature phase-shift-keying (QPSK) demodulation. Then, the proposed detector is developed by summing the outputs of the correlators over one hop duration. We also formulate an expression for probability of detection (PD) and use it as a performance measure for detection. Analytical and simulation results show that the proposed detector is able to detect the PBNI very well even at low interference power (8 dB lower than signal power). In addition, numerical results reveal that the proposed algorithm can also be used to detect multitone interference (MTI) encountered in slow FH-SS systems. |
| first_indexed | 2024-10-01T07:15:44Z |
| format | Conference Paper |
| id | ntu-10356/106797 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:15:44Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1067972019-12-06T22:18:35Z Detection of partial-band noise interference in slow FH/QPSK systems Aung, Aye Teh, Kah Chan Li, Kwok Hung School of Electrical and Electronic Engineering IEEE International Symposium on Circuits and Systems (2012 : Seoul, Korea) DRNTU::Engineering::Electrical and electronic engineering In this paper, we propose a detection algorithm to detect unknown partial-band noise interference (PBNI) which is frequently encountered in slow frequency-hopped spread spectrum (SFH-SS) systems. The algorithm utilizes a simple hypothesis testing to decide presence of PBNI in any particular hop after dehopping. A suitable threshold level is first derived to detect the PBNI by analyzing the statistical property of the outputs of two correlators used for quadrature phase-shift-keying (QPSK) demodulation. Then, the proposed detector is developed by summing the outputs of the correlators over one hop duration. We also formulate an expression for probability of detection (PD) and use it as a performance measure for detection. Analytical and simulation results show that the proposed detector is able to detect the PBNI very well even at low interference power (8 dB lower than signal power). In addition, numerical results reveal that the proposed algorithm can also be used to detect multitone interference (MTI) encountered in slow FH-SS systems. 2013-11-15T08:15:18Z 2019-12-06T22:18:35Z 2013-11-15T08:15:18Z 2019-12-06T22:18:35Z 2012 2012 Conference Paper Aung, A., Teh, K. C., & Li, K. H. (2012). Detection of partial-band noise interference in slow FH/QPSK systems. 2012 IEEE International Symposium on Circuits and Systems(ISCAS), 1263-1266. https://hdl.handle.net/10356/106797 http://hdl.handle.net/10220/17756 http://dx.doi.org/10.1109/ISCAS.2012.6271467 en |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Aung, Aye Teh, Kah Chan Li, Kwok Hung Detection of partial-band noise interference in slow FH/QPSK systems |
| title | Detection of partial-band noise interference in slow FH/QPSK systems |
| title_full | Detection of partial-band noise interference in slow FH/QPSK systems |
| title_fullStr | Detection of partial-band noise interference in slow FH/QPSK systems |
| title_full_unstemmed | Detection of partial-band noise interference in slow FH/QPSK systems |
| title_short | Detection of partial-band noise interference in slow FH/QPSK systems |
| title_sort | detection of partial band noise interference in slow fh qpsk systems |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/106797 http://hdl.handle.net/10220/17756 http://dx.doi.org/10.1109/ISCAS.2012.6271467 |
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