{"title":"A novel PCM/FM demodulation method using DSTFT analysis","authors":"Lanying Zhang, Sijie Yuan, X. Hou","doi":"10.1109/ICOSP.2008.4697482","DOIUrl":null,"url":null,"abstract":"This paper proposes a novel pulse code modulation /frequency modulation (PCM/FM) demodulation method using an efficient recursive algorithm to compute discrete short-time Fourier transform (DSTFT) of the signal. In this approach, instead of excluding the old samples, their importance is diminished by using all-pole moving-windows. The DSTFT-based PCM/FM demodulation method is simple because it expands the signal in a time-frequency plane and demodulates it only by searching the instantaneous spectral peaks without complicated carrier-recovery circuit. The computation is reduced and the bit error rate(BER) is degraded. Its effectiveness is illustrated by the simulation and test results.","PeriodicalId":445699,"journal":{"name":"2008 9th International Conference on Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 9th International Conference on Signal Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICOSP.2008.4697482","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
This paper proposes a novel pulse code modulation /frequency modulation (PCM/FM) demodulation method using an efficient recursive algorithm to compute discrete short-time Fourier transform (DSTFT) of the signal. In this approach, instead of excluding the old samples, their importance is diminished by using all-pole moving-windows. The DSTFT-based PCM/FM demodulation method is simple because it expands the signal in a time-frequency plane and demodulates it only by searching the instantaneous spectral peaks without complicated carrier-recovery circuit. The computation is reduced and the bit error rate(BER) is degraded. Its effectiveness is illustrated by the simulation and test results.
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