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The problem of interest is how to efficiently report and combine the local decisions to\/at the fusion center under fading channels. In order to reduce the required transmission bandwidth in the reporting phase, the paper examines nonorthogonal transmission of local decisions by means of on-off keying. Proposed and analyzed is a novel decoding-based fusion rule that essentially performs in three steps: (1) estimating minimum mean-square error of the transmitted information from cognitive radios, (2) making hard decisions of the transmitted bits based on the estimated information, and (3) combining the hard decisions in a linear manner. Simulation results support the theoretical analysis and show that the added complexity of the decoding-based fusion rule leads to a considerable performance gain over the simpler energy-based fusion rule when the reporting links are reasonably strong.<\/jats:p>","DOI":"10.1186\/1687-1499-2013-184","type":"journal-article","created":{"date-parts":[[2013,7,8]],"date-time":"2013-07-08T12:14:49Z","timestamp":1373285689000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A decoding-based fusion rule for cooperative spectrum sensing with nonorthogonal transmission of local decisions"],"prefix":"10.1186","volume":"2013","author":[{"given":"Simin","family":"Bokharaiee","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ha H","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ed","family":"Shwedyk","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2013,7,8]]},"reference":[{"key":"746_CR1","doi-asserted-by":"publisher","first-page":"263","DOI":"10.1109\/TVT.2008.923659","volume":"58","author":"S Yiu","year":"2009","unstructured":"Yiu S, Schober R: Nonorthogonal transmission and noncoherent fusion of censored decisions. 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