{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:51:07Z","timestamp":1760241067878,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2019,11,18]],"date-time":"2019-11-18T00:00:00Z","timestamp":1574035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Defense Basic Research Program of China","award":["B3120133002"],"award-info":[{"award-number":["B3120133002"]}]},{"name":"the Science and Technology Planning Project of Sichuan Province","award":["2019YJ0309"],"award-info":[{"award-number":["2019YJ0309"]}]},{"name":"the Sichuan Education Department Funded Project","award":["18ZB0611"],"award-info":[{"award-number":["18ZB0611"]}]},{"name":"the Longshan Academic Research Support of Southwest University of Science and Technology","award":["17LZX318"],"award-info":[{"award-number":["17LZX318"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Future Internet"],"abstract":"<jats:p>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.<\/jats:p>","DOI":"10.3390\/fi11110244","type":"journal-article","created":{"date-parts":[[2019,11,18]],"date-time":"2019-11-18T11:18:48Z","timestamp":1574075928000},"page":"244","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6378-0444","authenticated-orcid":false,"given":"Huan","family":"Wang","sequence":"first","affiliation":[{"name":"Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, China"},{"name":"School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bin","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuancheng","family":"Yao","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingwei","family":"Qin","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"848","DOI":"10.1109\/COMST.2014.2364316","article-title":"A Survey of Measurement-based Spectrum Occupancy Modeling for Cognitive Radios","volume":"18","author":"Chen","year":"2016","journal-title":"IEEE Commun. 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