Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio
In order to ease the conflict between the bandwidth demand of high-rate wireless communication and the shortage of spectrum resources, a wideband spectrum sensing method based on reconfigurable filter bank (RFB) with adjustable resolution is presented. The wideband signals are uniformly divided into...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Future Internet |
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| Online Access: | https://www.mdpi.com/1999-5903/11/11/244 |
| _version_ | 1818899100091809792 |
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| author | Huan Wang Bin Wu Yuancheng Yao Mingwei Qin |
| author_facet | Huan Wang Bin Wu Yuancheng Yao Mingwei Qin |
| author_sort | Huan Wang |
| collection | DOAJ |
| description | In order to ease the conflict between the bandwidth demand of high-rate wireless communication and the shortage of spectrum resources, a wideband spectrum sensing method based on reconfigurable filter bank (RFB) with adjustable resolution is presented. The wideband signals are uniformly divided into multi-narrowband signals by RFB, which is designed by polyphase uniform Discrete Fourier Transform (DFT) modulation, and each sub-band is sensed by energy detection. According to the idle proportion of detected sub-bands, the number of RFB sub-bands is reset in next spectrum-sensing time. By simulating with collected wideband dataset, the influence of filter bank sub-bands number and idle state proportion on the sensing results is analyzed, and then on the basis of the trade-off between spectrum-sensing resolution and computational complexity, the optimal sub-bands number of filter bank is selected, so as to improve the detection performance and save resources. |
| first_indexed | 2024-12-19T19:42:35Z |
| format | Article |
| id | doaj.art-f2db4a18a0c54e3da28608c6007492d1 |
| institution | Directory Open Access Journal |
| issn | 1999-5903 |
| language | English |
| last_indexed | 2024-12-19T19:42:35Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Future Internet |
| spelling | doaj.art-f2db4a18a0c54e3da28608c6007492d12022-12-21T20:08:13ZengMDPI AGFuture Internet1999-59032019-11-01111124410.3390/fi11110244fi11110244Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive RadioHuan Wang0Bin Wu1Yuancheng Yao2Mingwei Qin3Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, ChinaSchool of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, ChinaSchool of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, ChinaSchool of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, ChinaIn order to ease the conflict between the bandwidth demand of high-rate wireless communication and the shortage of spectrum resources, a wideband spectrum sensing method based on reconfigurable filter bank (RFB) with adjustable resolution is presented. The wideband signals are uniformly divided into multi-narrowband signals by RFB, which is designed by polyphase uniform Discrete Fourier Transform (DFT) modulation, and each sub-band is sensed by energy detection. According to the idle proportion of detected sub-bands, the number of RFB sub-bands is reset in next spectrum-sensing time. By simulating with collected wideband dataset, the influence of filter bank sub-bands number and idle state proportion on the sensing results is analyzed, and then on the basis of the trade-off between spectrum-sensing resolution and computational complexity, the optimal sub-bands number of filter bank is selected, so as to improve the detection performance and save resources.https://www.mdpi.com/1999-5903/11/11/244reconfigurable filter bankadjustable resolutionenergy detectionwideband spectrum-sensing |
| spellingShingle | Huan Wang Bin Wu Yuancheng Yao Mingwei Qin Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio Future Internet reconfigurable filter bank adjustable resolution energy detection wideband spectrum-sensing |
| title | Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio |
| title_full | Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio |
| title_fullStr | Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio |
| title_full_unstemmed | Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio |
| title_short | Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio |
| title_sort | wideband spectrum sensing based on reconfigurable filter bank in cognitive radio |
| topic | reconfigurable filter bank adjustable resolution energy detection wideband spectrum-sensing |
| url | https://www.mdpi.com/1999-5903/11/11/244 |
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