改进粒子群算法及其在基站优化选址中的应用研究

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1、ABSTRACTWiththeadventof4Gera，thethreeoperatorshaveaccesstoTD-LTElicense．ItneedstobuildalotofnewTD—LTEbasestations，basestationoptimizationsitingsuchissuesbecomeanimportantresearch．Inordertousethesmallestbasestationconstructioncosts，togetthebestqualityofserviceofcommunication，some

2、scholarshaveproposedtheuseofautomaticplanningalgorithmtoobtaintheoptimaldesign．However，thebasestationsitingconsiderations，suchasoptimizationoftrafficareas，coverageandcostissues，thecurrentoptimizationsearchalgorithmtosolveitisnotagoodcandidateforalargenumberofsolutions，theoptimiz

3、ationprocessiscomplex，multimodalsearchspaceandotherproblems．PSOalgorithmoriginatedinthestudyofgroupbehaviorofbirds，isanonlinearfunctionforcontinuousoptimizationofartificialintelligencealgorithms，asaswarmintelligence-basedoptimizationalgorithm，PSOalgorithmcanheusedtosolveavariety

4、ofnon-linear，non-differentiableandmultimodalcomplexoptimizationproblems．ButtherePSOalgorithmeasilyfallintolocalminima，lateslowconvergenceandpooraccuracyflaws．ForPSOalgorithmsearchaccuracyisnothigh，easytofallintolocalminimumdeficienciesOverall，thispaperpresentsanimprovedPSOalgori

5、thm,andappliedTD-LTEbasestationsitinginoptimization．Themainworkandinnovationofthispaperisasfollows：(1)ThispaperpresentsanimprovedPSOalgorithmeasytoimplement，theeffectisobvious．Improvedmainlytwoaspects：ontheonehand，particleswarmparticlewithaweightedaverageofindividualextremealter

6、nativetypeofparticlevelocityupdateindividualextreme；hand，byreferencetothetwonon-lineardecreasingfunctionoftheinertiaweightadjustments．Sothattheparticlescanheeasilymovedtotheoptimalpositionfaster,strongerglobaloptimizationcapability．(2)WereusedinthisarticleSphere，Griewank，Rastrig

7、rinandAckleyfunctionsimulationtestsonfourbenchmarkfunctionsthroughsimulationtoverifytheconvergenceoftheglobaloptimizationalgorithmtoimprovetheabilityofthisⅡI广东工业大学硕士学位论文article．(3)Inthispaper,improvedPSOalgorithmisappliedtoacityinthePearlRiverDeltaTD—LTEbasestationsitingintheopt

8、imization．Thesimulationresultsandapplicationssh