移动通信原理免费版

1百度文库免费版219461946AT&TAT&TNN--CDMACDMACDMACDMAAMPSAMPSTACSTACSFDMAFDMA1G1GGSMGSMTDMATDMA2G2GA/DA/D4G4GIPIP4G4GWCDMAWCDMACDMA2000CDMA2000TDTD--SCDMASCDMA3G3GGPRS,CDMA20001XGPRS,CDMA20001X2.5G2.5G11--14G14GIPPSTN/ISDNINTERNET4GRAN4GWLAN(4GRAN4G4GRAN4G2G3GRAN2G3GMN(Movablenetwork)MN(Movablenetwork)MT()MT()MT()MT()3++4900MHz900MHz890~915MHz890~915MHz935~960MHz935~960MHz450MHz450MHz403~420MHz403~420MHz450~470MHz450~470MHz160MHz160MHz138~149.9MHz138~149.9MHz150.05~167MHz150.05~167MHz800MHz800MHz824~849MHz824~849MHz869~894MHz869~894MHzISIS--95CDMA95CDMA2000MHz2000MHzPCSIMT-2000UMTSIMT-2000IMT2000UMTSIMT-2000MSSMSSMSSMSSMSSMSSMSSMSS1850190019502000205021002150220022501-25TRf1f1(f2)Bf1f1f2ATRf1f1(f2)1-3PlayPlayPlay6ATRf1f2TRf1f2B1-4playplayplayATRf1f2TRf1f2B1-5PlayPlayPlay7TRTRTRf1f2f1f2TRTRTRTRf1f1f2f21-6FDMAFDMATDMATDMACDMACDMA8LAN/WANLAN/WANGPRSGPRSIPIPIPIPIPIPLANLANWANWAN17171————2{{{{r(t)r(t)m(tm(t))rr00(t)(t)(t)rm(t)r(t)0×=(t)r0m(t)21t3PPtt,,,,GGttGGrrddGGtt=G=Grr=1=1πλ4GAr2r=rtPPL=24=λπdL[]dfLlog20log2045.32++=()10log()rrPdBmPmW=()10log()rrPdBWPW=ttrrGPdAP24π=45RR((020cosεθε−=zθε20cos−=zσλεε600j−=zzR+−=θθsinsin••••150MHz150MHz••••m2λ°1θ()()1vhRR==−6NNNN2tr2tr....Ae)R1(Re1GGd4PP+−++=∆Φ∆Φπλ2tr2trRe1GGd4PP∆Φπλ+=λ∆π∆Φl2=()lACCBAB∆=+−2i1N1iitr2tr)jexp(R1GGd4PP∆Φπλ∑−=+=ACBhmθhbdθθβ2-2••BBEEEE00RvRvEE0[1exp()]vEERj=+∆Φ∆Φ22000[1exp()]22vrEERjPηη+∆Φ==220012(4/)tEPdηπλ=7PP’’RR00180180'TPR∠2/2dλ+/2dλ+θ2-382/2dλ+/2dλ+mP'PP3r2r1r3/2dλ+/2dnλ+••nn••nnn=1n=1••••EE1212nnddrddλ=+2-414jkrjkrsRssEeeEEdsnrrnπ−−∂−∂=−∂∂∫sEn∂∂hh{{hhhh表面粗糙大于h表面光滑小于hcc⇒⇒8sincihλθ=2sinexp8hisπσθρλ=−roughsρΓ=Γhσ9,r,rdBdBdBdBmmmm448dB8dB10(,)10mlrrζζ=×10log(,)10loglrmrζζ=+10••••xxvvDopplerDopplercoscosvvvvxx(Doppler)(Doppler)••••αλvfd=λvmf11iixxiicc{}()Re()exp(2)cxtstjftπ=()Reexp2Reexp2iiiiiciiiiicixxxytaxtastjftcccxxastjftcππλ=−=−−=−−∑∑∑ia{}()Re()exp(2)cytrtjftπ=()()()exp2exp2iiiiciiiixxrtajstajfstcππττλ=−−=−−∑∑iixcτ=()rt12iθcosiixvtθ∆=−()exp2cosexp2exp2cosiiiiiiiiiiiixxxxrtajstcxxvtvajjtstccπλθππθλλ+∆+∆=−−=−−+∑∑()[]()()()[]()()exp2cosexp2cosexp2cos2exp22cosiiiiiiimiiiimiciiiiicimiixxvrtajtstcxajftstajftfstastjfftπθλλπθτλπθπτττπτπθ=−−=−−=−−=−−−∑∑∑∑mfiittiiii,()22cosicimiciDitffttψπτπθωτω=−=−()()()()(,)ijtiiirtastesthtψττ−=−=∗∑()()(,)ijtiiihtaeψτδττ−=−∑iτ()itψ()rtiaiτ()itψ()δi()()()ijtiiihaeψτδττ−=−∑iψ[]0,2π13PDPDPSDPAPrmsrms((XXdB)dB)““””““””BBccττσ14PDPPDPTTrmsrms((XXdB)dB)((XXdBdB))22--88((XXdBdB))rmsrms()1TPeTττ−=τ0dB-XdB∆mτmT()Pτ2-5()()22kkkkkkkkkkaPaPτττττ==∑∑∑∑()()22Eτσττ=−()()()22222kkkkkkkkkkaPEaPτττττ==∑∑∑∑0ττmTmτ∆τσ••••,,rmsrms••••()0()()(1)jtirtxtreω∆=+()2tnωπ∆=()(21)tnωπ∆=+)(t∆12()cBtωπ∆==∆()0()(,)1()jteirtHjtrextωω∆==+r2)(t∆Σ()ixt0()rt(,)cHjtω(,)1cos()sin()Atrtjrtωωω=+∆+∆2-6A(,t)r+1r−1ω)(2tn∆π)()12(tn∆+π2-7)(t∆()tτσ()tτσ15BesselBessel(())1222221122(,)(,)rrRfrrfrrrrτρτ∆−∆=−−121212120(,),(,)rRfrrrrprrdrdrτ∞∆==∫2022(2)(,)1(2)mrJfffτπτρτπσ∆≈+∆221()1(2)rffτρπσ∆≈+∆1()rt2()rt12fff∆=−0()J⋅mf0τ=()0.5rfρ∆=12cBτπσ=12fτπσ∆=BsBcBsBc16(CLASS)(CLASS)NNbbbb=1=1(FLAT)(FLAT)−=−mc1fffcosα2mcfff1sin−−=α[]dppdfbfS⋅−+=αααααα))G(-())G((.)()(mccmfffffffS−−−=22)(1)(π()π=α21/pπ≤α≤π−()αααdsinffdm−=()()ααα−=+==fcosffffmc()()ααdxpGb⋅⋅⋅()()()αααααd)(Gp)(GpbdffS⋅−−+=mf21)f(S=cmfff−()ααdpααd~()αGααd~()fS()αGfcS(f)2-8fc-fmfc+fm12cBτπσ=17=00.50.52828=0.52022(2)(,)1(2)mrJfffτπτρτπσ∆≈+∆()()RSfτ∆↔11cDmTff≈≈DfDB0f∆=(0,)rρτ≈916cmTfπ≈cT290.42316mcmTffπ≈=TsTc18PASPAS200()()()pdpdθθθθθθ∞∞−∆=∫∫00()()pdpdθθθθθθ∞∞=∫∫0,36019DDccDcx∆Dcx∆NakagamiNakagami--mm200~20~2TTccTTssPlayPlayPlayTcTsTTccTTss0022TTccTTssxx==TcTcTsTs()∑=+=NnncnztCEE10cosθωnnntφωθ+=()()tsintTtcostTEcscczωω−=∑=+=NnnnnctcosCEtT10)()(φω∑=+=N1nnnn0s)tsin(CE)t(Tφωbxebxp2221)(−⋅=π22c2s2TT2cscse21)T(p)T(p)T,T(pσπσ+==2z2s2s2cE2ETT====0zEnωnφcsTT⋅2zEnn,φα21rrrr0022=1.777=1.777()2c2sTTr+=cs1TTtg−=θcoscTrθ=sinsTrθ=cossin(,)sincos(,)csrTTJrrrθθθθθ−∂===∂2222(,)(,)2rcsrprpTTJeσθπσ−=⋅=∫∞−==02r221drre21)(p22ππσθσ22222r2202r2erdre21)r(pσπσσθπσ−−==∫σπσ2533.12dr)r(rp]r[ER0meanr====∫σσ2022222][][−=−=∫drrERrErσσπ220.429222=−=5.0)rr(Pm=≤mr∫−−==≤=RrRpexpdrrpRr022)2(1)()(P(R)σmr2922PlayPlayPlay,,AAII00((··))00KK••••••)0r,0A(AIer2202)Ar(222≥≥+−σσσ=)(rp222σAK=()222Alog10dBKσ=dBK,0A−∞→→12A2σ22--101023Nakagami-mNakagami-mmm••mm=1=1••mm2122()exp()mmmmrmrprm−=−ΓΩΩ222()var()Ermr=122()ErΩ=10()mxmxedx+∞−−Γ=∫1()exp()mmmsmspsmss−=−Γ()2sEsΩ==()2121KmK+=+22rs=2222()expexprrrrprss=−=ΩΩ24••TTssBBssBBcc••BBssBBccTTssBBssBBccTTssτστστσ10sTτσ≤TsTsTcTcBsBsBdBdTsTsTcTcBsBsBdBdTTccBBDD2531.85102Afννλ−==×××26RRrrffmm∫∞=0rd)r,R(pr)R(Nr22)(ρρπ−⋅=efRNmrmsRR2R==σρ∫∞==02222dr)r(pr)r(Eσσ2Rrms=••••••()RRNRrP≤=τ)1e(f212mR−=ρρπτ27Tt1t2t3t41234RTRn/4)(=∑=414/)(itRtT0211ClarkeClarke0022]]NNJakesJakes101028Clarke1Clarke11••nnxx••••••••nn••nαα215cosnnvfαλ=01cos(2)NzncnnEECftπθ==+∑01sinc