{"title":"QVSB data transmission","authors":"J.J. Poklemba, G. Mitchell, R. F. Smith","doi":"10.1109/MILCOM.2001.986031","DOIUrl":null,"url":null,"abstract":"It is well-known that conventional double-sideband (DSB) transmission is not bandwidth-efficient; and historically, in applications where bandwidth is relatively scarce, analog single-sideband (SSB) and vestigial-sideband (VSB) techniques have been used. Previously, high-definition television (HDTV) has opted to send its images digitally-employing multi-level, amplitude-shift-keyed, VSB transmission. This paper extends and broadens the digital VSB transmission concept by demonstrating the utility of quadrature-VSB (QVSB), where two independent data streams are placed on sine and cosine VSB carriers-effectively doubling the bandwidth-efficiency, at the expense of inducing a controlled form of intersymbol-interference (ISI). Classes of minimal ISI filtering families for QVSB are defined, which are more restrictive than Nyquist data shaping. Also, it is demonstrated that m-ary QVSB typically achieves the same capacity as m/sup 2/-ary QDSB, but requires significantly less E/sub b//N/sub o/.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MILCOM.2001.986031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
It is well-known that conventional double-sideband (DSB) transmission is not bandwidth-efficient; and historically, in applications where bandwidth is relatively scarce, analog single-sideband (SSB) and vestigial-sideband (VSB) techniques have been used. Previously, high-definition television (HDTV) has opted to send its images digitally-employing multi-level, amplitude-shift-keyed, VSB transmission. This paper extends and broadens the digital VSB transmission concept by demonstrating the utility of quadrature-VSB (QVSB), where two independent data streams are placed on sine and cosine VSB carriers-effectively doubling the bandwidth-efficiency, at the expense of inducing a controlled form of intersymbol-interference (ISI). Classes of minimal ISI filtering families for QVSB are defined, which are more restrictive than Nyquist data shaping. Also, it is demonstrated that m-ary QVSB typically achieves the same capacity as m/sup 2/-ary QDSB, but requires significantly less E/sub b//N/sub o/.
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