WCDMA无线原理简介

WCDMAWCDMAWCDMAWCDMA„WCDMA„WCDMA„HSDPAWCDMA—R99GSM/GPRSBSSBTSBSCNodeBRNCPCUUMTSUTRANSS7SCPSMSSCEPSTNISDNInternet,IntranetMSC/VLRGMSCHLR/AUCSGSNCGBGGGSNGPRS/OtherPLMNWCDMA2—R4GSM/GPRSBSSBTSBSCNodeBRNCPCUUMTSUTRANSS7SCPSMSSCEPSTNISDNInternet,IntranetMGWGMSCServerHLR/AUCSGSNCGBGGGSNGPRS/OtherPLMNMGWMSCServe/VLRWCDMA3—R5MGWMGWMSCServerMSCServerMGWMGWSGSNSGSNUTRANT-SGWT-SGWMGCFMGCFR-SGWMRFPMRFPPSTNLegacy/ExternalGMSCServerGMSCServerHSSHSSR-SGWR-SGWCSCFCSCFCxMsMwMgMrGiGiIMS-MGWIMS-MGWMcMcMcCDMhMhT-SGWT-SGWPSIPCSIuGrGiHSSHSSCSCFCSCFGGSNGGSNFrequencyTimePowerFrequencyTimePowerFrequencyTimePowerFDMATDMACDMAWCDMABER10-3„WCDMA1/21/3„TurboBER10-6„WCDMA1/3„SfSfSfSfWCDMA„SF=3.84Mcps„WCDMASF2256SF4512„GP=Wc/RWcR)„dBGP=10lg(Wc/R)„„„WCDMAmGold„2518WCDMAOVSFSpreadingDespreadingChipSF=1SF=2SF=4Cch,1,0=(1)Cch,2,0=(1,1)Cch,2,1=(1,-1)Cch,4,0=(1,1,1,1)Cch,4,1=(1,1,-1,-1)Cch,4,2=(1,-1,1,-1)Cch,4,3=(1,-1,-1,1)WCDMAWCDMA„WCDMA„WCDMA„HSDPAPowerd1d2d3„WCDMA‹‹‹‹‹‹‹WCDMA—12.2kbps64kbps384kbps144kbpsNodeBTPCSIRUESIRtarBLERBLERBLERBLERBLERBLERRNCBLERBLERtar10-100Hz„„„„„„RAKE„„d1d2d3RAKERAKERAKERAKEs(t)s(t)„CDMA„RAKEGSMWCDMATD-SCDMACDMA2000200K*2270.8kbit/sFDD4.615msGMSK2/s5M*21.25M*23.84Mc/s1.6M1.28Mc/sTDD10ms(5ms)TurboQPSK/8PSK1500/s200/s800/s1.228Mc/sFDDFDD10ms20msTurboTurboQPSK/BPSKQPSK/BPSK/WCDMAWCDMA„WCDMA„WCDMA„HSDPAHSDPAHSDPAHighSpeedDownlinkPacketAccessHSDPA„AMC„HARQ„FastScheduling„HS-PDSCH(DL)„HS-SCCH(DL)„HS-DPCCH(UL)22HSDPAAMCNodeB16QAMSF=16,2msframeHARQ2134562ms16QAMHARQAMC23HSDPA(Mbps)WCDMAR992.68831PS64ksubsor15PS128ksubsor7PS384ksubsSF=32orSF=16orSF=8HSDPA14.464Ingeneraleachsubs117.7kbpsSF=16R3/416QAMCDMA20001xEV-DO2.48Theaveragerateis200kbps24HSDPAHSDPA„HSDPA‹HSDPA‹WCDMAR99HSDPA‹WCDMAR99WCDMAWCDMAR99/R4HSDPAHSDPAHSDPACS/PSHSDPAR99HSDPAHSDPAHSDPAHSDPA„HSDPAWCDMAR99„HSDPAWCDMAR99HSDPAR99/R4HSDPAR99/R4HSDPAR99/R4HSDPAR99/R4„„UE„CS/PS„„„„„„„HSDPA„R99HSDPAf1R99/R4„HSDPAR99f2HSDPAR99/R4DCH+R5HSDPA„R99/R4R5HSDPAf3f2f1f1R99/R4+HSDPAf2R99/R4+HSDPAf3HSDPA„f1/f2HSDPA„f3HSDPAWCDMAW+CDMAW+CDMARAKERAKEHSDPAHSDPA3G3G