简介：BasedonthesemidefiniteprogrammingrelaxationoftheCDMAmaximumlikelihoodmultiuserdetectionproblem,adetectionstrategybythesuccessivequadraticprogrammingalgorithmispresented.Coupledwiththerandomizedcutgenerationscheme,thesuboptimalsolutionofthemultiuserdetectionprobleminobtained.Comparedtotheinteriorpointmethodspreviouslyreportedbasedonsemidefiniteprogramming,simulationsdemonstratethatthesuccessivequadraticprogrammingalgorithmoftenyieldsthesimilarBERperformancesofthemultiuserdetectionproblem.ButtheaverageCPUtimeofthisapproachissignificantlyreduced.

简介：Inordertoslovethelarge-scalenonlinearprogramming(NLP)problemsefficiently,anefficientoptimizationalgorithmbasedonreducedsequentialquadraticprogramming(rSQP)andautomaticdifferentiation(AD)ispresentedinthispaper.Withthecharacteristicsofsparseness,relativelylowdegreesoffreedomandequalityconstraintsutilized,thenonlinearprogrammingproblemissolvedbyimprovedrSQPsolver.Inthesolvingprocess,ADtechnologyisusedtoobtainaccurategradientinformation.Thenumericalresultsshowthatthecombinedalgorithm,whichissuitableforlarge-scaleprocessoptimizationproblems,cancalculatemoreefficientlythanrSQPitself.

简介：Thepaperpresentsaneuralnetworkforsolvingaclassofquadraticprogrammingproblems.Theneuralnetworkiscompletelystabletoexactsolutionsandtherearenoparameterstoset.Moreover,noanaloguemultipliersanddividersarerequired,incontrasttoexistingneuralnetwork[3]whichneedsplentyofanaloguemultipliers.

简介：Theneuralnetworkforsolvingquadraticprogrammingproblemisfurtherinvestigated,andtheavailablestabletestingconditionofthismethodispurposed.Weprovethatthenetwork,underproposedcon-dition,hasabehavioroftheglobalconvergence.Finally,numericalsimulationexamplesaregiven.

简介：也就是，二维的光直角的代码(2-DOOC)的一个新家庭修改了二次的一致代码(MQCC)/optical直角的代码(OOC)被建议当波长跳跃和散布时间的模式，采用MQCC和OOC分别地。通过分析MQCC/OOC的表演，我们能看到MQCC/OOC的关联性质仍然是理想的。同时，我们的分析证明建议新代码家庭能比另外的代码得到更多的集的势并且能改进光代码分割的位错误率(BER)多重存取(OCDMA)有效地。