TDSCDMA系统联合检测技术的研究及实现(3)

发布时间:2021-06-07

TDSCDMA系统联合检测技术的研究及实现

ABSlRACr

ABSTRACT

TD—SCDMA,whichcombines

withCDMA.isonealltheadvantageofthetimedivisiondeplex(TDD)ofthethreemainstandardsofthird-generationmobileradiosystem.

useFurthermore,itmakesofmanyadvancedtechniques,suchassmartantenna,joint

detection(JD),andsoon.So,TD—SCDMAisthemostefficientinusingthespectruminthethreemainstandards.

Joint

onDetectionisoneofthekeytechniquesinTD—SCDMAsystem.anditisbasedcanmulti-userdetection.Jointdetectionreduceoreliminatethemultiaccessinterference(MAO,intersymbolinterference(IsoandNear-Fareffects,simplifypowercontrol,reducepowercontrolprecision,andremedythenegativeinfluencecausedbythe

code.Consequently,jointdetectionnonidealrelativityoftheorthogonalspreading

techniquecallimprovethesystemperformance,increasethesystemcapacity,andextendthecellcoverage.

ThecharacterofthephysicallayerproceduresforTD—SCDMAsystemisintroducedandthenChapter2explainsthejoint—detectionmodelfortheuplinkofTD SCDMAsystem.Astydyhas

Chapterbeenmadeonthethreekindsoflinearjointdetectionalgorithmsin3.Thentheperformanceandcomplexityofthethreealgorithmshasbeen

redioanalyzed.InTD—SCDMAmobile

leastsquaresproblemwithasystem.joint-detectionisequivalenttosolingablock-Toeplitzsystemmatrix.Byextendingthismatrixtoa

matrix研mFastFourierblock-circulantmatrix.itispossibletoblockdiagonalizethe

lastofChapterTransforms(FFT).Inthe3,Simulationresultsandcomputational

requirementfigures

Chapter4forjointdetectionalgofithnmusingFFTispresented.thetoolsintroducesusinginthehardware

joint-detectionalgorithm.AndthenthesignalprocessingimplementationofschemeforTD—SCDMAsystemisbennpresented.Thenthedetailofeverymoduleforjoint-detectionalgorithmisbeendescribed.

Chpater5focusonthetestingplat-formforjoint-detoctionASICdesigning.ThedataexchangeinterfacebetweenDSPandFPGAisdescribedindetail.

algorithm;ASICKeywords:TD SCDMA;jointdetection;block-fourier

III

TDSCDMA系统联合检测技术的研究及实现(3).doc 将本文的Word文档下载到电脑

精彩图片

热门精选

大家正在看

× 游客快捷下载通道(下载后可以自由复制和排版)

限时特价:7 元/份 原价:20元

支付方式:

开通VIP包月会员 特价:29元/月

注:下载文档有可能“只有目录或者内容不全”等情况,请下载之前注意辨别,如果您已付费且无法下载或内容有问题,请联系我们协助你处理。
微信:fanwen365 QQ:370150219