{"title":"Digital modulation classification: the BPSK versus QPSK case","authors":"K. Kim, A. Polydoros","doi":"10.1109/MILCOM.1988.13427","DOIUrl":null,"url":null,"abstract":"The authors report on a novel BPSK/QPSK classifier and compare it to the more traditional, ad-hoc techniques of-a-square-law classifier and phase-based classifiers (weighting on the phase histogram). The proposed classifier is derived by an approximation of the likelihood-ratio functionals of phase modulated digital signals in white Gaussian noise, called a quasi-log-likelihood-ratio (qLLR) rule. It is shown analytically that its performance is significantly better than that of intuitively designed phased-based rules or the conventional square-law classifier.<<ETX>>","PeriodicalId":66166,"journal":{"name":"军事通信技术","volume":"23 1","pages":"431-436 vol.2"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"85","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"军事通信技术","FirstCategoryId":"1093","ListUrlMain":"https://doi.org/10.1109/MILCOM.1988.13427","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 85
Abstract
The authors report on a novel BPSK/QPSK classifier and compare it to the more traditional, ad-hoc techniques of-a-square-law classifier and phase-based classifiers (weighting on the phase histogram). The proposed classifier is derived by an approximation of the likelihood-ratio functionals of phase modulated digital signals in white Gaussian noise, called a quasi-log-likelihood-ratio (qLLR) rule. It is shown analytically that its performance is significantly better than that of intuitively designed phased-based rules or the conventional square-law classifier.<>
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