Phasor monitoring of DxPSK signals using software-based synchronization technique

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dc.contributor.authorChoi, H. G.ko
dc.contributor.authorTakushima, Y.ko
dc.contributor.authorChung, Yun Churko
dc.date.accessioned2013-03-08T19:27:32Z-
dc.date.available2013-03-08T19:27:32Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-10-
dc.identifier.citationOPTICS EXPRESS, v.18, no.21, pp.21511 - 21518-
dc.identifier.issn1094-4087-
dc.identifier.urihttp://hdl.handle.net/10203/94045-
dc.description.abstractWe develop a novel phasor monitor to obtain the constellation diagram from asynchronously sampled data measured by using the delay-detection technique. This phasor monitor consists of three parts; a phase-adjustment-free delay-interferometer, an optical front-end made of three photodetectors, and analog-to-digital (A/D) convertors, and a digital signal processor. We operate the A/D convertor at the sampling rate much slower than the symbol rate and acquire the data asynchronously. However, despite the use of such a slow and asynchronous sampling rate, we obtain the clear eye and constellation diagrams by utilizing the software-based synchronization technique based on a novel phased-reference detection algorithm. Thus, the proposed phasor monitor can be implemented without using high-speed A/D convertors and buffer memories, which have been the major obstacles for the cost-effective realization of the phasor monitor. For a demonstration, we realize the proposed phasor monitor by using an A/D converter operating at 9.77 MS/s and used it for the constellation monitoring and bit-error-rate (BER) estimation of 10.7-Gsymbol/s differential quadrature phase-shift keying (DQPSK) and differential 8-ary phase-shift keying (D8PSK) signals. (C) 2010 Optical Society of America-
dc.languageEnglish-
dc.publisherOPTICAL SOC AMER-
dc.subjectCARRIER PHASE-
dc.subjectCOHERENT DETECTION-
dc.subjectMODULATION-
dc.titlePhasor monitoring of DxPSK signals using software-based synchronization technique-
dc.typeArticle-
dc.identifier.wosid000283686500001-
dc.identifier.scopusid2-s2.0-78049515561-
dc.type.rimsART-
dc.citation.volume18-
dc.citation.issue21-
dc.citation.beginningpage21511-
dc.citation.endingpage21518-
dc.citation.publicationnameOPTICS EXPRESS-
dc.identifier.doi10.1364/OE.18.021511-
dc.contributor.localauthorChung, Yun Chur-
dc.contributor.nonIdAuthorTakushima, Y.-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordPlusCARRIER PHASE-
dc.subject.keywordPlusCOHERENT DETECTION-
dc.subject.keywordPlusMODULATION-
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