Gradient estimation for stochastic optimization of optical code-division multiple-access systems. II. Adaptive detection

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dc.citation.bibtexNamearticleen_US
dc.citation.firstpage742
dc.citation.issueNumber4en_US
dc.citation.journalTitleIEEE Journal in Selected Areas in Communicationen_US
dc.citation.lastpage750
dc.citation.volumeNumber15en_US
dc.contributor.authorMandayam, Narayan B.en_US
dc.contributor.authorAazhang, Behnaamen_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:52:45Z
dc.date.available2007-10-31T00:52:45Z
dc.date.issued1997-05-20
dc.date.modified2002-04-17en_US
dc.date.submitted2002-04-17en_US
dc.descriptionJournal Paperen_US
dc.description.abstractFor pt.I see ibid., vol.15, no.4, p.731-41 (1997). We develop infinitesimal perturbation analysis (IPA)-based stochastic gradient algorithms for deriving optimum detectors with the average probability of bit error being the objective function that is minimized. Specifically, we develop both a class of linear as well as nonlinear (threshold) detectors. In the linear scheme, the receiver despreads the received optical signal with a sequence that minimizes the average bit-error rate. In the case of the threshold detector, the detection threshold for the photoelectron count is optimized to achieved minimum average bit-error rate. These algorithms use maximum likelihood estimates of the multiple access interference based on observations of the photoelectron counts during each bit interval, and alleviate the disadvantage of previously proposed schemes that require explicit knowledge of the interference statistics. Computer-aided implementations of the detectors derived are shown to outperform the correlation detector. Sequential implementations of the adaptive detectors that require no preamble are also developed, and make them very viable detectors for systems subject to temporal variations.en_US
dc.identifier.citationN. B. Mandayam and B. Aazhang, "Gradient estimation for stochastic optimization of optical code-division multiple-access systems. II. Adaptive detection," <i>IEEE Journal in Selected Areas in Communication,</i> vol. 15, no. 4, 1997.
dc.identifier.doihttp://dx.doi.org/10.1109/49.585784en_US
dc.identifier.urihttps://hdl.handle.net/1911/20083
dc.language.isoeng
dc.publisherIEEEen_US
dc.subjectcode division multiple access optical fibre communication optimisation parameter estimation stochastic processes adaptive signal detection optical sig*
dc.subject.keywordcode division multiple access optical fibre communication optimisation parameter estimation stochastic processes adaptive signal detection optical sigen_US
dc.titleGradient estimation for stochastic optimization of optical code-division multiple-access systems. II. Adaptive detectionen_US
dc.typeJournal article
dc.type.dcmiText
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