第9讲基带传输：低通接收、匹配滤波器、匹配接收ppt课件

1、12( ) 0 for a binary 1( )( ) 0 for a binary 0bibs ttTs ts ttT ( )( )( ) 1,2 0iLy ts tn titT 0000()()()()bLbbLby tkTAntkTy tkTAntkT 1 0 TTyVyyVyAnyAn 2221( )2nnnp ne2n( )( )( ) 1,2iLy ts tn ti1( |)E y sA2221111( |)( |)|( )nD y sEyE y ssE nsD n22()21121( |)( )2ny Anp y sp ye2( |)E y sA 2222222( |)( |)

2、|( )nD y sEyE y ssE nsD n22()22221( |)( )2ny Anp y spye211(|)( )TVP esp y dyTV122(|)( )TVP espy dy1122( )( )()( )TTVbVPP sp y dyP spy dy1122( )( )()( )TTVbVPP sp y dyP spy dy0bTdPdV11221122( )( )()( )( )( )()( )TTTTVbVVVbPP sp y dyP spy dyPP sp y dyP spy dy11220( )()()()TTP s p VP sp V22()2121( )2ny

3、 Anp ye1122() ( )()()TTp VP sP sp V22()2221( )2ny Anpye 221ln2nTP sVAP s121212212112( ) (|)() (|)11(|)(|)(|)22bPP s P esP s P esP esP esP es112212( )()()()()()TTTTP sp VP sp Vp Vp V2112(|)(|)P esP es22122211(|)22nzAnAP esedzerfc22()2122201(|)( )2nTy AVnP espy dyedy()2nyAz22122bnAPerfc22( )txerfc xed

4、t0, ( )20, HnHNffGfff0sin2( )2HnHHfRN ff222( )( )( )( )( )( )()(0)( )( )D X tEX tE X tE XtRE X t X tRE XtD X t20122bAPerfcN B( )( )( )wX ts tnt( )( )( )ooY ts tn t( )( )( )oSSH1( )( )21( )( )2j tooj ts tSedSHed001( )( )( )2j tos tSHed20( )os t0( )onGt20011( )( )( )222oonnNGtPdHd222111( ) ( )( )( )22

5、2XYdXdYd02202001( )( )( )21( )( )22j tooSHeds trNG tHd( )( )XKY2222200011( )( )( )24( )4oHdSdSdErNNNHdmax02oErN0( )( )j tHKSe000*()()0011( )( )( )22( )21( )2() ( )()j tj tj tjttjjtth tHedKSeedKsededKedsdKtt sdKs tt )(tsOtTT Ot)( ts (a)(b)mtTtm tO)(thTtm (e)mtT mtt)(thTtm O(c)Ttm )(thmttO(d)*0*00( )(

6、 )( )() ( )()()( )()()sy ts th ts thds tKs tdKsstt dKR tt( )( )()()( )( )()fRtf tftft fdfft d00000*2( )()(0)( )()( )ssy tKR tKRKsstdsdKtEt0( )( )j tHKSe0( )( )j tHKSe12( ) 0 for a binary 1( )( ) 0 for a binary 0bibs tAtTs ts tAtT ( )( )( )( ) 1,2 0( )LiwbLAntr ts tntitTAnt 0( )()h tKs tt1( )( )( ) 0

7、wbr ts tnttT 010110( )( )( )( ) ()( ) ()( )( )()ttbtwby tr th trht drs Ttdsns Ttd 11011021100()( )( )()( )( )( )( )( )( )bbbbTbwbbTwTTwy Tsns TTdsnsdsdsnd10( )( )bTwZsnd210( )bTbEsd()bby TyEZ1(|)0E Z s221111121112120012111212001211121200(|)(|)|( )( ) ( ) ( )( )( ) ( ) ( )( )( )( ) ( )bbbbbbTTwwTTwwT

8、TwwD Z sEZE Z ssE ZsEnt nt s t s t dt dtE nt nt s t s tdt dtE nt nts t s t dt dt 01221( )( )()( )( )2wwwwNE n t n tR ttR 201(|)2bN ED Z s1( |)bE y sE22211111( |)( |)|(|)D y sEyE y ssE ZsD Z s22()21121( |)( )2by Ep y sp ye2( |)bE y sE 220222( |)( |)2bN ED y sEyE y ss22()21121( |)( )2by Ep y sp ye211(|)( )TVP esp y dy122(|)( )TVP espy dy1122( )( )()( )TTVbVPP sp y dyP spy dy0bTdPdV1122( )()()()TTP s p VP sp V 221ln2nTP sVAP s2012bbEPerfcN210122bAPerfcN B2210000( )