11. 5. 8.19.[( /)]jou tMGS NLsMjG(S/N)ou tLsG20.PN1.2288Mc/s(c/schip/s, /)9.6kb/s3dB,7dBdBG216.9102288.1log103[( /)]21 (73)11jou tMGS NLsdB21.m2n12nmn22.n=15m=215-1=32767 p66 2-4 (8)(8)(8)(8)(8)10000310000000000000111100131001000000001011120265101000001011010113366310110111101100111423051100010011000101iiiiiCCCCC100003(8)m23.OFDMOFDM1/224.OFDM450kHz32 s280~840kb/sOFDMOFDMp88444 32128GICPs;(CP)5640TsCPs;CPTs_CP=6×CP=s768;111.56640sfMHzkHzTkHzB450288fBNskbR/37510768288616QAM+1/2skbR/750107684212886(CP34QPSK+3/4skbR/5.56210768243288625.OFDM(ICI)26.OFDM28.IFFT/FFTOFDM1.2.10dBm10W10dBdBmmW W dB4.2m5d1=10kmd2=5km450MHz82xkm32.4420lg20lg32.4420lg1520lg 450109.03fsLfddB321045010368fc83361213123 105 1010 10450 1047.1415 10d dxmddp983-421dB74.11xx109.0321130.03LdB212200mrdhthrkm24.12()4.12(2002)64.0942046.100m6bGdB3m0mGdB10km150MHz1 210W(1)32.4420lg20 lg32.4420 lg15020lg1095.96fsLfddBp1113-23( , )25mAf ddBp1123-24(,)6bbHh ddB(,)0mmHhfdB95.96256126.96LdB(2)10lg10610126.96110.9680.96pPdBWdBm11.COST-207IMT-2000PDPCOST-207IMT-200012.AOA1.3 Rake/4.2101101021p154, 4-17,(a) 011010jm000jP00jC1jm011jP11jC51jm110jP10jC0jm101jP01jC1jm011jP11jC 0011100111 8.101,NMSE22NMSE3010,2N=4/MSE432sin(2/)kdkNMSE(1) MSE222011201[][][ 2 cos(2/)][ 2cos(2/)sin(2/)sin(2 (1) /) ]kkkkkE eE dxEkNyyEk NkNkN(2)20[]0kE esin(2/)0kN21[]0kE esin(2 (1) /)0kNMSE=2[4 cos2/EkN(3)4/2sin(kyk2kk22122111sin(222111(1))sin()sin((1))222kkkkkky yykkk10001,3,5,....000,2,4,....01kk12 cos()sin()2 cos()sin((1))2222TTkkkkkkkPE d yd yEk001,3,5,....020,2, 4,....TTkkMSE=22TTkE dRP)dyy ykkk])/cos(4c(21)sin()sin((1))sin(1REE62201,3,5,....4 cos()40,2,4,.....2kkE dEkkMSE=10000022 0001,3,5,....0022kMSE=00004022 0202, 4,....0122k42sin(2/)kdkN 2241,3,5,....4sin()02, 4,.....2kkkE dEk22sin()2sin()sin((1))222TkkPEk201,3,5,....002, 4,6,.....TTkk101,3,5,.....00002,4,6,.....01kRkMSE=100402kMSE=00022 0042, 4,6,....0122k11.900MHz80/km h12sks/241117.52222mcfTmsf23324.3 107.5 10182NT R1.2.0200002 2041,3,5,....203.473.FDMA25kHzFDD100MHzkHzB52100255.100C=5/T=180/15%k5%20%()0375.0159036011805a/75.31000375.0App1845-2B=5% A=3.75n=77B=20%A=3.75n=527TDMATDMA38.CDMAFH-CDMAPNDS-CDMA13.14.8kmkmrN403kmN4083N>8.33 N=9j=3i=017.18.MSC21.0km40kmTDMTDMAPN8(1)725.777p2105-24MTP SCCP TCAP MAP OMAP ISDN-UPSP27.29.RAGSMRARAVLRMTT1HLRMTVLRIDT2VLRMSCMTT3T410.5km2.GSMGSMAMPSPDCGSM200kHz/8/16/3/648kb/s PDC25kHz,/42kb/sGSM22.8kb/sD-AMPS13 kb/sPDC11.2 kb/sGSMGSM3.123456HLRVLR12D-AMPSTDMA/FDMA270kb/s,D-AMPSPDCAMPS30kH30kHz3/6kb/sD-A9345(AUC)SIM6HLRVLRHLR--GSMHLRVLR—HLR4.()BSIC5.7-1312 126.20ms80bit1294)21/()4340(bit40bitskb/4.13)2120/(1347.TDMAMAHOFDMA BSBSBSMSCMSC TDMAMAHOMSFDMAFDMA8.GSM()9.GSM()10.()0bit134bit1011.GPRSGSMGSMGPRS()12.GPRS()1.CDMATDMA2.CDMA3.4.CDMA5.CDMA1/3CDMA6.CDMA117.CDMA CDMA8 .CDMA 9IS-95CDMA×××1063)×10
