Теория цифровой связи. Ч
.2.pdf
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noBCCM.u0 |
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.(24) |
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.(23) |
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1.2.PHC |
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npneMHHKHe |
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paspa6oxHHKa |
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p=10'-10"-oxjiHHHOe.KanecxBO |
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p=10" |
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-10"-xopouieeKanecxBo; |
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p=10"'-10"-yflOBJiexBopHxenbHoeKanecxso; |
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PeajibHbieCHCXCMMCBSSHpaSoxaroxcxaKHMHBepoaxHOCxaMHomH6oK: |
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BCpOHTHOCTb.OUJH6KH |
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nOMeXOyCTOHHHBOCTH |
IIOTCHUHajlbHOH |
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BCpOHXHOCXb.OUIH6KH |
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cooxaexcxsyex |
noMexoycxoHHHBOCXH |
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HHSKOK |
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Manaa |
cooxBetcTByeT |
noMexoycTOHHHBOCTH |
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BbicoKofl |
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OU1 |
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ECJIHNflocraTOHHo |
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BCJIHKO,HOHe6ecKOH6HHO,TOp=N |
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2) |
(2 |
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sepoaxHocxbOUIH6KHp: |
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KoJlHHeCTBCHHOHMCpOHnOMeXOyCXOHHHBOCXHHBJlHeXCS |
.nOMCXOyCTOHHHBOCTblO |
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noTenuna/ibnoii |
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Hasbisaexca |
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noMexoycTofinHBOctb |
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MaKCHManbHaa |
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.CDSISIS |
CHCTCMLI |
noMexoyeroHHHBocTi>io |
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MemaioiueMyBJIHSHHIOnoMex |
npenHTCxBOBaTb |
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CBJ13H |
CHCXCMW |
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Cnoco6HOCTb |
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.(21) |
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(t)+x(t). |
Ui |
z(t)= |
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cyMMe |
pasHbifi |
z(t), |
npouecc |
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nocrynaex |
npHeMHHKa |
Bxofl |
Ha |
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AjiropHXM.1.2onxHMajibHoronpneivia |
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nOMEXOYCTOftHHBOCTb |
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OnTHMAJIbHblH.2.HPHEMKHKnOTEHUJHAJIbHAfl |
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paccMaxpHBaioxcaBflaHHOMyHe6noM.noco6HH |
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CHCTCMWCBHSH |
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nacxH.KOHcneKiaHasHaneHHeocxanbHbixSJIOKOBHHXBJinaHHeHaxapaKxepwcxHKH |
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BnepBoii |
paccMOXpeHbi |
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UH(J>poBOH |
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flCMoayjiaxopa |
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UH^POBOFO |
aHanoroBoro(UAI1)npeoSpasoBaxejieii, |
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HuH<}>po- |
(AUTI) |
aHajioro-inuJjpoBoro |
HasHaHCHHe,<j>yHKUHHHxapaKxepncxHKH |
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ITU-riojiynaxejib.HH(]>opMauHH |
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IIAII-LJncJipo-aHajioroBbiH.npeoSpasoaaxejib |
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JH-fleKOflepHCTOHHHKa. |
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.(219) |
/2). |
2 |
p=5exp(.0-h |
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no4>opMyjie: |
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aH3BbixoAeA^opacnpeAeJienHe.Pe^es |
AfliHMeeMpacnpeAeneHHePanes, |
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pemeHHC,cooxBexcxsyromee6ojibineMy.HanpsaceHHK)OITBnaBWXOACAfliH |
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nacxoxy(BI,HIlOo,HacxpoeHHbift |
nanpneMeHeo6xoAHMoHMexbABBnojiocoBfaix({imibxpa:n<t>i,HacxpoeHHbiftna |
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ABBpasnwenacxoxw,xo |
7.2.pHC..K.TnpHnepeAaneCHraanaflHMnepeAaroxca |
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noK333naHa |
CxpyKxypnaacxeMaHeKorepeHXHoroAeMOAyjiaxopacnrHanaffJM |
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6.2.PHC |
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\3-H,Penea |
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W(Um/l) |
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W(Um/0) |
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-oxHonieHHec/uiHaBbixoAe.HO |
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.(218) |
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h |
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p=5.0exp(-rM) |
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onpeAenaexcano<j>opMyjie: |
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AJI»HeKorepeHXHoro |
ouiH6KH |
H.p(0/l)BepoHXHOCXb |
p(l/0) |
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cooxBexcxByiomHMHOEDBna6.2.pncxapaKxeprayroTseposxHocxH |
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nog |
njiomaflH |
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HanpHweHHH |
noporoBOM |
onxHMajibHOM |
FlpH |
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5.2.Pac |
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py |
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Afl |
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n® |
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W(Um/l)(pnc..6)[3].2 |
npnnepeAane1-nosaicoHyPaBca |
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nepeAane0HsnpaaceHHenaBHXOACAflpacnpeAenenonosaKonyPejieaW(Um/0),a |
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TOnpn |
uiyMOM, |
cnopMaJitHbiM |
cHraajiBcyMMe |
fleficxsyex |
BXOACn<E> |
ECJIHHa |
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.ycxpoftcxflo |
Aexeierop,PYpemaromee— |
aMnjiHxyAHwft,neKorepeHXHbijt |
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Afl- |
<j>mibxp, |
O6o3HaneHHflna5.2.pnccneAyromne:DO-no^ocoBofi |
.5.2.pHC |
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CrpyKxypnaacxeMaHeKorepeHXHoroAeMOAyjiHxopaCHraajia/JAMnoKaaaHana |
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HeH3BecxHa,xoHcnojibayroxcaHeonxHManbHbie,HeKorepenxHwecnocoGw.npweMa |
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cnrHana |
(jjaaa |
HanajibHaa |
ECJIH |
.fyzau |
AO |
XOHHOCXWO |
npHHHMaeMbixcHrnanoBc |
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HCOSXOAHMOSHaXbO6p331jfal |
H3CXHOCXH, |
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.peaJIHSaUHH |
CJIOHCH3B |
AOBOJIbHO |
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InTHMajibHbiHnpneMHHKAaexMaKCHMaJIbHyronoMexoycxoHHHBOcxfa,HOeroerocxeMaCXCN |
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.3.2HeKorepenxHbiHnpneMBKaHanecHeH3BecTHofiHanaJibHog<j)a3oftcHraana |
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02 |
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2 |
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.16) |
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HeoGxoAHMoHMexbho=2,82(ho=8),npnflAMHeoGxoAHMOHMexbh |
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10 |
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OIUH6KH,HanpHMep2,6-10",npH#OMHeo6xoflHMoHMexbh |
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aeposxHocxH |
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BHBOfly,c<j>opMyjiHpoBaHHOMy |
K |
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KpHBbienoxeHiinajibHoKnoMexoycxoftHHBOCXHna4.2.pnc, |
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4.2.PHC |
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5.0 |
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aoxmiaAWBaeMjiorapH<J>M,.e.xIgp.OcbpHanpaBjiena.BHHS |
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-HCXKHHOBsHaneHHesepoaxHocxHouiH6KH, |
MbinnmeMBAOJibOCHp |
Macuixa6e,.e.x |
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BJIOr3pH<}>MHHeCKOM |
OXAOaceHBAHHCHHOMM3CUIxa6e,3BCpOaXHOCXbOUIH6KH- |
ho |
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H3SXOMrpsd^HKenapaMexp |
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oxh |
noKaaanasaBHCHMOcxbBepoaxHocxnOIHH6KHp |
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.NOHarpai})HKe.p«c4.2 |
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6nxa |
-ecxbOTHomeHne |
02 |
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OapaMCxph |
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