移动通信第一章

112„„„„„„3„„4---„1880“”——7002515km„19„18971912„19055TITANICTragedySpawnsWirelessAdvancements„Radioroom&RadioOfficersJackPhillipsHaroldBride6---„19211945„1928——AM„30„1935FM„3„“”„“”27---„19461968„1946Bell„——FM120kHz3kHzAM3kHz60FM30kHz/25kHz„——„60“IMTS——”FM150/450MHzFM308——„19491982„40Bell601974„1978——AMPS10FM——1982AT&T7„1983AMPS1980NMT1979NAMTS1985TACS()„9„10„----„„---„FM„FDMA„ISDN11——„„8090——„1992GSM„1991IS-54„1993PDC„1993IS-95(N-CDMA)19941212„313„„„GMSKQPSK„TDMACDMA„„„„„„14——„90Wideband2Mbps„1G2G„2G3G25„ITUWCDMAcdma2000TDSCDMADECT15„CDMA16„„CDMA„QPSK/„FDMA/TDMA/CDMA„„mediaMultimedia17„DS-CDMA„„„„QoS„IMT-2000„2GHzIMT-200018—IP„Broadband100Mbps„3GIP510419BeyondIMT-2000„BeyondIMT-2000Nomadic„3GIMT-2000„BroadbandBeyondIMT-2000100Mbps„Mbps/20„2122„IP20042324---5W„„(Whoever)„(Whenever)„(Wherever)„(Whomever)„(Whatever)525„„()„„„„„„„„26ITU„(ITU)„ITU(IFRB)(CCIR)(CCITT)„19933ITU„CCIR+IFRBITU-R„(CCITT)ITU-T„BDT27„„(CEPT)„(ETSI)1988GSMDECTHiperLAN„„(EIA)„(TIA)„(CTIA)„(ANSI)„IEEELAN„——CWTS282930„„„„„„631„„„SIM/UIM„„32zzzzBPz33„„„„„„34zVHFUHFzzzz3536„„„„„„737„---(TDD,FDD)„---FDMA,TDMA,CDMA,SDMA„---„---,„---„---,„---„---38„„„39„„„„„„„„40,,,,f1(f1)f1(f2)f1(f1)f1(f2)41f1f2f1f2f1f2:,:,,,,:,,42,:“-”,,,,,:,,843„„„44„„„„„„45„„„„„„46a.,,b.iii1BP---47c.124894950►►►►51„„„„N()„N„„52362622145753„····„54CADFGCFDEDFEGBGCBEBADEFGBCGFBGCBDCEDFE(N=7)DCBGFE1055Base1Base2Base3,563:,(wireless)5758a.(CT0,CT1):59b.(CT2)(TDD)CT2CT2(Telepoint)CT2,60c.(DECT)DECTDigitalEuropeanCordlessTelephone)1161DECT:DECT62PHSPACSCDCT86363↓↓),,,646566·····1267··68········►►695()(GEO),()NGEO)70PSTN71“”(Iridium)1998,“”(Globostar)1999“”(ICO)7277785km76661.2m,2.3m5L48(48)667km4000km21373(ITU),,,,745:,,75„„„„„„7677(MS,MobileStation)(BS,BaseStation)(MSC,MobileTelephoneSwitchingCenterorMobileServicesSwitchingCenter)BSBS(BS)(MS)(PSTN)(PLMN)(MSC)78„„„„