通信通信系统性能分析PPT学习教案

1、会计学1通信通信系统性能分析通信通信系统性能分析)cos()()(000ttfAtAM)cos()()(00ttftDSB)sin()()cos()()(0000ttfttftSSB)()(ttSSBVSB2/ )(220tfASi2/ )(2tfSi)(2tfSi第1页/共66页)(2tfSi4/)(20tfS2/0n)(21)(tftud第2页/共66页),()(210DSBAMWndSNmnii),(20VSBSSBWnNmimAMiiWntfANS02202/ )()/(mDSBiiWntfNS022/ )()/(mVSBSSBiiWntfNS02,/ )(2)/(第3页/共66页)(

2、2tfmninindWSSS4/ )()()(004/)(2100mndWndSN8/00mWnN 4/0iNN 2/0n第4页/共66页iNtfNS/ )(/200mAMWntfNS0200/ )()/(mDSBWntfNS0200/ )()/(mVSBSSBWntfNS02,00/ )(2)/(2/0n)(2tf第5页/共66页)2()()()(0220200miAMWnStfAtfNSmiVSBSSBDSBWnSNS0,002)(0niiNSNSG/00第6页/共66页),(, 1)(,2)(,)()(2/220200VSBSSBDSBAMtfAtfNSNSGii第7页/共66页)cos

3、()()(000ttfAti2/ )(220tfASi/0miWnN mAMiiWntfANS02202/ )()/()()(tntii第8页/共66页ttnttntnsci00sin)(cos)()(ttnttntfAtntscii000sin)(cos)()()()()(cos)(0tttA2/1220)()()()(tntntfAtAsc)()()(0tntfAtnarctgtcs00)()(0tntfAi第9页/共66页)()()(220tntntfAsc2/100)()(21)()(tfAtntfAtAc1,1)1 (xmxxm)()()(0tntfAtAc)()(tftud)()(

4、tntncd)(20tfS 第10页/共66页)2()()()()()(0220202200mimiAMWnStfAtfWntfNtfNS)()(0tntfAiiicNtntnN)()(220)()(22202tfAtfG第11页/共66页2/2ASi/210000ndnNi022)(nANSFMii第12页/共66页)()(tfKKtufDd)(2220tfKKSfD)cos()(00tAti)sin()()cos()()()cos(000000ttnttnAtntAsci)(cos)(0tttA第13页/共66页2/122)()()(tntnAtAsc)()()(1tnAtntgtcsAt

5、nts/ )()()()(AtndtddttdsidttdnAKAtndtdKtnsDsDd)()()(dttdns/ )()(tnsjH)()(tns)(snS第14页/共66页dttdns/ )()(2snS, 0),()()(00iisnnnSSSmmnDnWWSAKSsd, 0),()/()(22第15页/共66页dSNmmdWWn)(210dSSAKimminWWnD)()(21)(002223023/AWnKmD3022200/ )(3)/(mfFMWntfKANS2max23322)()()(6/ )(6tftfWWtfKGmmfFM第16页/共66页33FMFMGm/21)(/

6、 )(2max2tftfmAMWnANS02002/)/(第17页/共66页AMFMmFMFMNSWnANS)/(32/3)/(00202200AMAMFMFMNSWWNS)/()/( 3)/(002006 . 03/1FMAMFMNSNS)/()/(0000第18页/共66页dttdfKpi/ )()()(tfKKtupDd)(2220tfKKSpD第19页/共66页22/1)(HdHSAKNnsWDm22200)()()(1202AWnKmD2max22max20200/)()()()(dttdftfdttdfKWnANSPmPM2max2202/)()()(dttdftfWnAmmax/

7、 )(dttdfKP第20页/共66页3PMPMG2max2322/)()(2)(2dttdftfWWtfKGmmPPMPMFMPMFMGG320200)(2)(mmPMnANSmAMWnANS02002/)/(AMPMAMmPMNSNSNS)/()/()/()/(00200200第21页/共66页PMFMNSNS)/(3)/(0000第22页/共66页第23页/共66页第24页/共66页)(/1)(pdHH第25页/共66页)()()()(tetetftfn第26页/共66页)(ten)(2teNne)(te)(2teNqeqNNN0qeqeqPCMNNNtfNNtfNS/1/ )()()(

8、2200qePCMqNNNS/1)/(0第27页/共66页3/23/ ) 12()2(2222121neneniieePPPN)241/()/()/(2000nePCMqPCMPNSNS12n), 3 , 2 , 1)(2(1nin)2(1i21)2(i第28页/共66页222/21)(nnnenp222/021)(nxnexp2n第29页/共66页dxxpPA)()0/1 (20判决门限xP(x)P1(x)P0(x)0A/2222/)(121)(nAxnexpdxxpAxPPA)()2/() 1/0(2/11)(0 xp)()(tnAtx第30页/共66页) 1/0()0/1 () 1/0(

9、21)0/1 (21PPPPPe) 1/0() 1 ()0/1 ()0(PPPPPedxxpdxxpdxxpAA)()()(2/00002/0dxeAxnn2/02/2221212nxu第31页/共66页nAuedueP22/021 212)22(1 21nAerf)22(21nAerfcxydyexerf022)(nA/nA/nA/第32页/共66页xP(x)0A/2-A/210-1010-210-4 10-610-8610141822AdB1.0错误概率pe)2(21neAerfcP第33页/共66页sBcnTnRnBnWn22124000024/2AS )/(21)/(2100nEerf

10、cnSTerfcPse2/0n2n0/nESSTE 第34页/共66页0)( 1 )(cos)(0tntntAtiii0)()( 1 )()()(2/1222/122tntntntnAtscscttnttntnsci00sin)(cos)()(第35页/共66页)(tni)2/(exp)(2220nnpdAAIAPPnnAne2/ )(exp)()2/(222202/021up(v)p0(v) p1(v) Pe1Pe00A/2dAPPnAne)2/(exp)2/(222/202n)(0 xI2/ )(exp)()(2222021nnnAAIp第36页/共66页)2/(exp222/2dnAnd

11、AAIPPPPPnnAneee2/ )(exp)(21)0() 1 (222202/02014/21reeP222/nAr0)( 1 )(cos)(0tntntAtiii1eP0eP第37页/共66页)2/(21)22/(21rerfcAerfcPne4/1reerP2n0)( 1 )()(tntnAtxcc第38页/共66页0sin)(cos)( 1 sin)(cos)()(111111111ttnttnttnttnAtyscsc0sin)(cos)( 1 sin)(cos)()(222222222ttnttnAttnttntyscsc0)()( 1 )()()(2/121212/12121

12、1tntntntnAtxscsc0)()( 1 )()()(2/122222/122222tntnAtntntxscsc第39页/共66页1221101211)()()(1dxdxxpxpxxPPxe122221210021)2exp()exp()(dxAxAxIxnnnn2/121reeP222/nAr12110200210)()()(2exePdxdxxpxpxxPP2/0121)0() 1 (reeeePPPPP第40页/共66页0sin)(cos)( 1 sin)(cos)()(111111111ttnttnttnttnAtyscsc0sin)(cos)( 1 sin)(cos)()(

13、222222222ttnttnAttnttntyscsc0)( 1 )()(111tntnAtxcc0)( 1 )()(222tnAtntxcc)(1tnc)(2tnc)(1tx)(2tx第41页/共66页021)( 1 21)(2212212/102/)(11nnxnAxnexpexp021)( 1 21)(2222222/)(202/21nnAxnxnexpexp)0()(21211ccennAPxxPP21xx 1eP21ccnnAz)(1tnc)(2tnc2n2222)(nZZZ第42页/共66页222/)(21)(ZAZZeZp)2/(211rerfcPe)2/(21)0()0(21

14、210rerfcnAnPxxPPcce)2/(21)0() 1 (01rerfcPPPPPeee2/21reerP第43页/共66页0sin)(cos)(cos 1 sin)(cos)(cos)(000000ttnttntAttnttntAtyscsc)()()(tnAtnAtxcc第44页/共66页021)( 1 21)(22222/)(02/)(1nnAxnAxexPexPP1(x)P0(x)xP(x)0A-APe0Pe1)(21)0() 1 ()(00rerfcPPdxxpPereerP21)(tnc01)0() 1 (eeePPPPP)(1xp)(0 xp第45页/共66页(a) 数学

15、模型(b) 波形DPSK(t)LPFBPFan TS1(t) 2(t) 抽样判决定时抽样x(t)y(t)延迟101101(t) 2(t) an ttty(t)tx(t)t抽样脉冲an t10011第46页/共66页ttnttntAtttnttntAtscsc020202010101sin)(cos)(cos)(sin)(cos)(cos)()(1t)(2ttttntnAttnAtnAtysccc00210221cossin)()(cos)()()(ttntntttntnAsssc02210012sin)()(cossin)()()()()()(21)(2121tntntnAtnAtxsscc0

16、)(2121111ssccennnAnAPPt02cost02sin第47页/共66页reeP211reeP210reeeePPPPP21)0() 1 (01第48页/共66页第49页/共66页第50页/共66页)()()(tntgtxii第51页/共66页)()()(00tntgtydeGHtgtji)()(21)(0dHndnHtn200220)(42)(21)(22000)()(21)(deGHtgtji第52页/共66页dHndeGHtntgrtji202202000)(4)()(21)()(0dBdAdBA222)()()()()()( kBA)()(HA0)()(tjieGB第53

17、页/共66页dHndGdHri202220)(4)()(412/)(2102ndGi0/2nE0max0/2nEr0)()(tjiekGH)()( kBA0max0/2nEr第54页/共66页)(0ttkgideHthtj)(21)(deekGtjtji0)(21dedegkttjji)(0)(21dgdekittj)(21)(0dttgki)()(00;00;)()(0ttttkgthi第55页/共66页dthgthtgtgii)()()()()(0dttkggii)()(0dttggkii)()(0tt0)()()()(000ttkRdttggktgiigi(t) TS th(t) t t0(a) 输入信号(b) 匹配滤波器的冲激响应第56页/共66页EdttgRtgi)()0()(200+-0ttt0011h(t)gi(t)go(t)go(t)gi(t)(t)延迟002000第57页/共66页其它,00,1)(0ttgi)1)(/1 ()()(0jtjiiejdtetgG00) 1)(/1 ()(tjjeejH0)()(tjiekGH)()(0ttgthi第58页/共66页)1)(/1 ()(0jejH)()(0tgthi第59页/共66页)()()()()(21tntstntstxiiTTVdttststxs)()()(1022/