培训课程一(原理和技术指标)

))))))))ZTEF1F2F1F2283:833.49MHZ878.49MHZ1.11.1LNALNA1.11.1LNALNALNALNA1.11.11.21.2::1010MHzMHz::1.251.25MHzMHz1010WW11WW1010WW11WWCDMACDMACDMA(MHz7283833.49878.496242832.26877.265201831.03876.034106829.80874.83119828.57873.57278827.34872.34137826.11871.111X=0.030*=0.030*+825MHz+825MHz=0.030*=0.030*+870MHz+870MHz11NfNfNfNf=(=(SiSi/Ni)/(So/No)/Ni)/(So/No)NfNf(dB)=10lg(dB)=10lg((((SiSi/Ni)/(So/No)/Ni)/(So/No)))NfNf55dB;dB;66dB;dB;1.31.3221.31.31.31.3885885MHZ~915MHMHZ~915MHZ/100KHZZ/100KHZ806806MHZ~821MHMHZ~821MHZ/100KHZZ/100KHZ--6767dBmdBm--4747dBmdBm935MHZ~960MH935MHZ~960MHZ/100KHZZ/100KHZ--6767dBmdBm--4747dBmdBm890890MHZ~915MHMHZ~915MHZ/100KHZZ/100KHZ22GG870880890909915CDMAAMPSGSMGSM33((AdjacentChannelPowerRatio)AdjacentChannelPowerRatio)CDMACDMA1.31.333((AdjacentChannelPowerRatio)AdjacentChannelPowerRatio)44((IntermodulationIntermodulation))--1515dBmdBm/30kHZ/30kHZ1.31.31.41.4SPANSPANATTATTAttenuation)Attenuation)VBW:VBW:((VideoBandwidthVideoBandwidth))RBW:RBW:((ResolutionBandwidth)ResolutionBandwidth)1.231.23MHZMHZ==MKRMKR+10+10log(1.23MHz/RBW)log(1.23MHz/RBW)1.51.5))(1)(1)))))==KTFKTFW/HzW/Hz))))1.381.381010--2323J/KJ/K))TT290290KK))FF55dBdB))KT=KT=--174dBm/Hz174dBm/HzKTF=KT+F=KTF=KT+F=--169dBm/Hz169dBm/Hz))1.251.25MHZMHZ))=10=10logKTFWlogKTFW))=10logKTF+10logW=10logKTF+10logW))==--169+10log(1250000)169+10log(1250000)))==--169+60.9=169+60.9=--108.1dBm108.1dBm))CDMACDMA1.251.25MHZMHZ))--108108dBmdBm))(1)(1)1.51.5RR9.69.6Kbit/SKbit/SRim,Rim,33dBdBPrec=KTFR*Eb/Prec=KTFR*Eb/Io*RimIo*Rim(2)(2)EbIo=Prec/RKTF=PrecKTFRPrec,Prec,Eb/IoEb/Io1.51.5Eb/IoEb/Io77dBdBPrec=KTFR*Eb/Prec=KTFR*Eb/Io*RimIo*Rim==--174+5+10log(9600)+7+Rim174+5+10log(9600)+7+Rim==--122dbm+3=122dbm+3=--119dbm119dbmRFER1%,RFER1%,--117117dbmdbm(2)(2)1.51.5))(3)(3)))))1010dBdB))--118118dBm/1.25MHZdBm/1.25MHZ))))--117117dBmdBm33dBdB1.51.51.61.6ACBGGreprepLLnetnetGGbtsbts(1)(1)((GGrep/rep/LLnet)net)FFcascadecascade=F=Freprep+(F+(Fbtsbts--1)*L1)*Lnetnet/G/Greprep=F=Freprep*[1+(F*[1+(Fbtsbts--1)*L1)*Lnetnet/(G/(Greprep*F*Freprep)])]FFreprep*[1+F*[1+Fbtsbts*L*Lnet/net/(G(Greprep*F*Freprep)])]=F=Freprep**(1+10(1+10NIM/10NIM/10))dBdB1.61.65791113151719-10-8-6-4-20246810NIMFcascadeFrep=5dBFrep=6dBFrep=7dBFrep=8dBFrep=9dBNIM(NoiseInjectionMargin):NIM=10log(Lnet*Fbts/Grep*Frep)NIMFFreprep--btsbts1.61.6(2)(2)PPtotaltotal(W)=(W)=PPbnsbns(W)+(W)+PPinjinj(W)(W)PPinjinj(dB)=(dB)=KTBFKTBFreprep+G+Greprep++LbtsLbts--reprepPPtotaltotal(dB)=10lg(P(dB)=10lg(Ptotaltotal(W))(W))=10lg[=10lg[PPbnsbns(W)+(W)+PPinjinj(W)](W)]=10lg[=10lg[10P10Pbnsbns(dB)/(dB)/1010+10P+10Pinjinj(dB)/(dB)/1010]]1.61.6(2)(2)ROT(dB)ROT(dB)ROT(dB)=ROT(dB)=PPtotaltotal(dB)(dB)--PPbtsnisebtsnise(dB)(dB)=10lg{[=10lg{[10P10Pbnsbns(dB)/(dB)/1010+10P+10Pinjinj(dB)/(dB)/1010]/10P]/10Pbnsbns(dB)/(dB)/1010}}=10lg[1+10=10lg[1+10--NIMNIM/10]/10]NIM:NIM:NIM=10lg(10PNIM=10lg(10Pbns(dB)bns(dB)//1010/10P/10Pinj(dB)inj(dB)//1010))1.61.6NIM024681012-10-9-8-7-6-5-4-3-2-1012345678910NIMROTrepGrepGrepPinjPinjNIMNIMROTROT(3)(3)GrepGrep,,GrepGrepFFcascadecascadePNPN1.61.6