{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:23:56Z","timestamp":1760243036357,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2015,5,8]],"date-time":"2015-05-08T00:00:00Z","timestamp":1431043200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Recently, a novel fusion scheme for cooperative spectrum sensing was proposed for saving resources in the control channel. Secondary users (SUs) simultaneously report their decisions using binary modulations with the same carrier frequencies. The transmitted symbols add incoherently at the fusion centre (FC), leading to a larger set of symbols in which a subset is associated with the presence of the primary user (PU) signal, and another subset is associated with the absence of such a signal. The decision criterion applied for discriminating these subsets works under the assumption that the channel gains are known at the FC. In this paper, we propose a new simultaneous transmission and decision scheme in which the task of channel estimation is shifted from the FC to the SUs, without the need for feeding-back of the estimates to the FC. The estimates are used at the SUs to pre-compensate for the reporting channel phase rotations and to partially compensate for the channel gains. This partial compensation is the result of signal clipping for peak-to-average power ratio (PAPR) control. We show, analytically and with simulations, that this new scheme can produce large performance improvements, yet reduces the implementation complexity when compared with the original one.<\/jats:p>","DOI":"10.3390\/s150510891","type":"journal-article","created":{"date-parts":[[2015,5,8]],"date-time":"2015-05-08T10:56:41Z","timestamp":1431082601000},"page":"10891-10908","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Resource-Efficient Fusion with Pre-Compensated Transmissions for Cooperative Spectrum Sensing"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1304-792X","authenticated-orcid":false,"given":"Dayan","family":"Guimar\u00e3es","sequence":"first","affiliation":[{"name":"National Institute of Telecommunications\u2014Inatel, Av. Jo\u00e3o de Camargo, 510, 37540-000 Santa Rita do Sapuca\u00ed, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1734-5534","authenticated-orcid":false,"given":"Guilherme","family":"Aquino","sequence":"additional","affiliation":[{"name":"National Institute of Telecommunications\u2014Inatel, Av. Jo\u00e3o de Camargo, 510, 37540-000 Santa Rita do Sapuca\u00ed, Brazil"}]},{"given":"Marco","family":"Cattaneo","sequence":"additional","affiliation":[{"name":"University of Hull, Cottingham Road, Hull HU6 7RX, UK"}]}],"member":"1968","published-online":{"date-parts":[[2015,5,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1109\/98.788210","article-title":"Cognitive radio: Making software radios more personal","volume":"6","author":"Mitola","year":"1999","journal-title":"IEEE Pers. 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