Fundamentals of Spread Spectrum Modulation phần 5 pot
Fundamentals of Spread Spectrum Modulation phần 5 pot
... August 3, 2007 13: 15
44 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION
FIGURE 17: Digital implementation of a noncoherent matched filter for acquisition [1].
5. 3 Tracking in Spread Spectrum
Once the ... of the output of the
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 37
0
00
p
z
1
10
T
pz
1
12
T
pz
2
23
T
pz
3
34
T
p
z
4
45
T
p...
Fundamentals of Spread Spectrum Modulation phần 1 potx
... 13:19
v
Contents
FundamentalsofSpreadSpectrumModulation 1
1 Introduction 1
2 ReviewofBasicDigitalModulationTechniques 3
3 TypesofSpreadSpectrumModulation 7
4 Spreading Codes . 11
5 Code Acquisition ... features of a spread
spectrum modulation system. The type of spread spectrum system shown in Fig. 1 is known as
binary direct sequence (DS) spread spectrum modulation, beca...
Fundamentals of Spread Spectrum Modulation phần 2 potx
... descriptions of two generic spread spectrum modulation
techniques—QPSK spreading and frequency-hop spread spectrum.
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 11
4 SPREADING ... LEFT)
21
[
7
]
∗
32
[
13
]
∗
42
[
23
]
∗
56
[
45
]
∗
,
[
75
]
,
[
67
]
66
[
103
]
∗
,
[
147
]
,
[
155
]
718
[
211
]
∗
,
[
217
]
,
[
2 35
]
,
[
367
]
,...
Fundamentals of Spread Spectrum Modulation phần 4 pot
... 0.82 15 5.9067
41 .5 0.0032 0.8099 5. 8246
42.0 0.0028 0.7978 5. 7708
42 .5 0.0024 0.7 854 5. 7430
43.0 0.0020 0.7727 5. 7394
43 .5 0.0018 0. 759 6 5. 758 6
44.0 0.00 15 0.7462 5. 7990
44 .5 0.0013 0.7326 5. 859 7
45. 0 ... T
3
)
z
T
1
+T
2
+T
3
−1
. (5. 9)
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 33
0
00
pz
1
10
T
p
z
1
12
T
p
z
2...
Fundamentals of Spread Spectrum Modulation phần 8 pot
... d
f
+4 d
f
+5 d
f
+6 d
f
+7
3 (7, 5) 5 1 4 12 32 80 192 448 1024
4 ( 15, 15) 6 2 7 18 49 130 333 836 2069
5 ( 35, 23) 7 4 12 20 72 2 25 500 1,324 3680
6 ( 75, 53 ) 8 2 36 32 62 332 701 2,342 55 03
7 (171, ... d
f
+4 d
f
+5 d
f
+6 d
f
+7
3 (7, 7, 5) 8 3 0 5 0 58 0 201 0
4 (17, 15, 13) 10 6 0 6 0 58 0 118 0
5 (37, 33, 25) 12 12 0 12 0 56 0 320 0
6 ( 75, 53 , 47) 13 1 8 26 2...
Fundamentals of Spread Spectrum Modulation phần 3 doc
... loop of a code synchronizer locks.
0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5
0
0 .5
1
f, Hz
S
b
(f,
ε
)
Power spectrum of c(t)c(t+
ε
); T
c
= 1 s; N = 7
ε
= 0.1T
c
s
0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5
0
0.1
0.2
f, ... orthogonality of a pair of codes holds only if the codes are aligned.
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATIO...
Fundamentals of Spread Spectrum Modulation phần 6 ppt
... If ρ is the fraction of
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 53
As alluded to above, one could deduce the performance of FH spread spectrum in barrage
noise ... Performance of a FH/MFSK noncoherent spread- spectrum system in barrage noise
jamming.
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MOD...
Fundamentals of Spread Spectrum Modulation phần 7 ppsx
... book Mobk087 August 3, 2007 13: 15
58 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION
0 5 10 15 20 25 30 35 40 45 50
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
P/J W/R, dB
P
b
FIGURE 28: ... 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 57
0 5 10 15 20 25 30 35 40
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
P/J W/R, dB
P
b
FIGURE 27: Bit error probability for the F...
Fundamentals of Spread Spectrum Modulation phần 9 doc
... Morgan
and Claypool, 2006.
78 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION
book Mobk087 August 3, 2007 13: 15
76 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION
0 5 10 15 20 25 30
10
-12
10
-10
10
-8
10
-6
10
-4
10
-2
10
0
E
b
/N
0
, ... book Mobk087 August 3, 2007 13: 15
74 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION
0 5 10 15 20 25 30 35 40 45 50
10
-8
10
-...
Fundamentals of Spread Spectrum Modulation docx
... loop of a code synchronizer locks.
0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5
0
0 .5
1
f, Hz
S
b
(f,
ε
)
Power spectrum of c(t)c(t+
ε
); T
c
= 1 s; N = 7
ε
= 0.1T
c
s
0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5
0
0.1
0.2
f, ... 2.
book Mobk087 August 3, 2007 13: 15
FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 15
-20 - 15 -10 -5 0 5 10 15 20
-0 .5
0
0 .5
1
τ
, s
R
c
(
τ...
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