5.
8.
19.MjMj
Ls
G
20.9.6kb/s7dB
PNG
G[(S/N)outLs](S/N)out
1.2288Mc/s(c/s
chip/s, 3dB,
/)
1.2288103
G10log
9.6Mj
21.
m
21dB
Ls]21(73)11dB
G[(S/N)out
1
n
2n1
mn
22.n=15m
=215-1=327672-4CiCi
100003(8)110013(8)120265(8)133663(8)142305(8)
10000000000000111001000000001011101000001011010110110111101100111100010011000101
p66
Ci
CiCi
100003(8)m23.OFDM1/2
24.OFDM
280~840kb/sOFDMp88
CP
OFDM450kHz
OFDM
32s
GICP4
(CP)(CPTs5CP
Ts_CP=6×CP=768s;11fMHz1.56kHz
Ts640
4
432128s;640s;
B450kHzN
Bf288
R
28876810
6
375kb/s
288142768106
16QAM+1/2
R750kb/s
2
2884QPSK+3/4
25.
(ICI)
26.
OFDM
R
324768106
OFDM
562.5kb/s
28.IFFT/FFTOFDM
1.
2.10dBm10WdBm W dBd4.12122(ht10dBmW4.hrr)200m4.12(20022)64.09km2md1=10kmd2=5km450MHz5x82kmLfs32.4442020lgfc
f
20lgd32.4420lg1520lg450109.03dB23
863108450106
310x1
d1d2d1d2450105101510310103347.14m
p983-4
L
21dB
xx1
1.74
109.0321130.03dB
3
6.Gm
0dB
100m
10km10W
32.4420lgf
20lgd
Gb
6dB3m
150MHz
1 2
(1)
Lfs
32.4420lg15020lg10
Am(f,d)
25dB
95.96dB
p1113-23
6dB
p1123-240dB
Hb(hb,d)Hm(hm,f)
L95.96256126.96dB
(2)
Pp
10lg10610126.96
110.96dBW
80.96dBm
11.COST-207IMT-2000
PDP
COST-207
IMT-200012.
AOA
1.
3
Rake
/
4.
2mjmj
211
0110101
PjPj
00
0
0
CjCj
0011
11
011010
p154,
4-17,(a)
4
mj
1
Pj
110
Cj
10
mj0Pj101Cj01mj
1
Pj
0
11
Cj
11
0011100111
8.
10
,
1NMSE2N
2MSE
300,
1
2N=4/MSE
43dk
2sin(2k/N)
MSE
(1) MSEE[e2
2
2k]
E[dkxk]
E[2cos(2k/N)0yk1yk
1]
E[2cos(2k/N)0sin(2k/N)1sin(2(k1)/N)2]2(2)E[ek]0sin(2k/N)00E[e2k]0sin(2(k1)/N)01MSE=E[4cos2k/N2](3)yksin(2k/4)dk2ccos((2k/4)sin(111REy2ky2k)2sin(kykE2k)sin(2(k1))1yk1yky2k1sin(1sin(1sin(1(k1))22(k1))2k)21000k1,3,5,....00k0,2,4,....
0
1
TP
EdTkyk
dkyk
1E2cos(
k2
)sin(
k2
)2cos(
k2
)sin(
2
(k1))
00T
k1,3,5,....0
2
T
k
0,2,4,....MSE=Ed2
T
k
R
2P
T
5
Edk
2
E4cos(
21000
k)
2
04
kk
1,3,5,....0,2,4,.....
0202
MSE=002
0001
02022000k1,3,5,....
MSE=4022020k2,4,....
4
dk2sin(2k/N) Edk
2
E4sin(
k2
)
2
40
kk
1,3,5,....2,4,.....
PE2sin(
k2
T
)
2
2sin(
k2
T
)sin(
2
(k1))
201
R
000
0000010
T
kkk
1,3,5,....2,4,6,.....1,3,5,.....
k10002,4,6,.....0001
02020202
MSE=422204k1,3,5,....
MSE=011.12
022004k2,4,6,....
80km/h
900MHz
244.3ks/s
c
1T12fm
2
12
f27.5ms
2NTR24.310
3
7.510
3
182
1.
2.
6
3.FDMA25kHzFDD100
B
5.
25kHz1002
100
5%(
)
5MHz
C=5
/
T=180/
20%
k
15%
aA
5180115903600.03751003.75
5-2n=5
0.0375
B=5%A=3.752
/
7
pp184A=3.75TDMA
n=77B=20%
TDMA
8.
CDMA
FH-CDMA
PN
TDMATDM3
DS-CDMAPN13.14.40km0km8km3NrN=9j=3
17.
i=0
40km3N840kmN>8.33 18.
MSC
21.
7
(1
25.7
727.
p210SP
)75-24
7
MTPSCCPTCAPMAPOMAPISDN-UP
29.
RAVLR
RAVLRMSC
GSMRAMTT1HLRMTT3T4
MT
VLRIDT2
1
2.PDC
GSM
0.5kmD-AMPS
PDC
GSM
30kHz30kH/
42kb/s13 kb/sPDC
GSM200kHz3/6
AMPS
/8/1648kb/s PDC
25kHz,
TDMA/FDMA270kb/s,D-AMPSAMPS/3/622.8kb/skb/sD-AD-AMPSGSM
GSM3.
12345612
11.2 kb/sGSM
HLRVLR
8
3456
HLR
VLR
HLR--VLR—HLR
4.
BSIC
5.
12 2
17-13
(
)
(AUC)GSM
SIM
HLR
6.20ms80bit0bit12
1(4034)/()240bit7.TDMA BSBS134bit94bit1)13.4kb/s2134/(20MAHOFDMABSMSC
MSC TDMAFDMA
MAHOMS
FDMA
8.GSM9.GSM10.
(
)
()
()
9
11.GPRS
GSMGPRS
GSM
(
)
12.GPRS()
1.CDMATDMA
2.CDMA
3.
4.CDMA
5.
CDMA1/3
CDMA
6.CDMA
10
7.
CDMA
CDMA
8.
CDMA
9IS-95CDMA
××
×106×103)
11
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