第二章擴頻系統(tǒng)的性能分析

1、)(2cos)()(0ddtfftntN)()(41)(00dndnNfffSfffSfSnBBnnBNdfNdffStnEPnn0022)(| )(|2)(21)(1lim)(022222nTNBNtnEdttNTtNEPTTdthffTcNtudddrN)()(2cos)()(2)(0dthTcntdr)()()()(uN)(tuN0)()()()(dthTcEnEtuEdrN)()()(22tuEtuEtuDNNN)()()()()()(*dthTcndthTcnEdrdrddTcTcEththnnEdrdr)()()()()()(* )()(*tntn)()(*tctcrr)()()(

2、nnERn)()()(drdrcTcTcERrddRRhhtuDrcnN)()()()()(P*uN交流功率：)()()()(fSRfSRrrccnn傅立葉變換對傅立葉變換對dffSfSfHPncurN)(*)(| )(|2dFFfSFSfSfSrrcNcN)()()(*)(dFdfFfSfHFSPurcnN)(| )(|)(2deRfSjccrr2)()(其他*0|*|1)(cccTTRr2sinT)(fTfTfScccrdFFTFTBTNPccbcuN20)sin(2dFFTFTBPBPccBBNNbuNNN2)sin(NssbuPBBPN其他*0|*21| )(|bBffHbBfHdf|

3、 )(|2)(2cosJ)( J0mddtfftdthffTctuddd)()(2cos)()( J2)(0JdthTcfftuddd)()()(2cosJ2)(02mJdthctu)()T(2J)(dmJ222J| )(|)sin()(SfHfTfTTJfcccm1sin2fTfTcbbBBcmJcmJdfTJdffSTJP222|21|)(bcmJBTJP2dffHfTfTTJdffSPccmJJ222| )(|sin)(22| )(| )()(SfHfSJfrcmJpbcmsbcmuinoutGBTJPBTJPNSNSs21212/)/()/(22)(2cos)()2cos()(0201

4、tfAtytfAty)2cos()(0tfxty)2cos(1 202fAx)2cos(1 200fPP2)()(ttEP)()(2)()(22ttEtEtEP)(1 20rPP)(tR(0)R()(r)(t(t)E)R()(t02PP 2|02|2)(000BffBffBPfSdfefSRjf2)()()2cos()sin()(00fBBPRdfeBPdfeBPRfBfBffBfBf22/2/022/2/0000022)()2cos()sin(1 200fBBPPBBPP)sin(1201)2cos(0fBPP11209 . 020PP10B109 . 011BKHzB9 .15102 .

5、01013其他0|1)(cccTTRr)2cos()()(0ftAct2)()(ttEP)()(2)()(22ttEtEtEP)2cos()(1 200fRPPccccTPTfTPP|2|)2cos()1 (1 2000)()()(tJtstr)2cos()()()(101111tfTtcTtAdtrddMmmmdmmdmfTtcTtdA20)2cos()()(MmmdmmdmmJTcTdAtu21)()()cos()(dthtc)()(1dthTTRTdAtuMmdmdcmdmmJm211)()()()cos()(1 ,01 ,mcR0)(tuJMmdmdcJTTREAtuDm2122)(2

6、)(1 ,21)(1 ,NREmc4231)(1 ,NNNNRDmcPJJGPMNMAtuDP) 1(12)(2PGPMPJ1bJRNP0bbREP 00/1NEGREGRNMbPbbPb6 . 067. 23/8VG1/0VbPGNEGMkmTkTttftgPts)()2cos()(2)(001)2cos()(2)(0021tfTtgPtrdT)2sin()()2cos()(00tftntftnsc)()(2)()(21)()(0222021tnTtgPtntnTtgPtycdTscdT)()()(2)()(2220022041ngngyRTNRRPRPRTT)(*)()()(*)(2)()(22002041fSfSfTNfSfSPfSPfScngngyTT2)sin()(fTfTTfSTgTfTffTNfSfScn2|02|)|2(4)(*)(202042204121| )(| )(PdffHfSPPTg2020202220021871| )(|)(*)()()(*)(2NTPNTdffHfSfSfTNfSfSPPcngnnT002112)(NTPPPNSnout