B O
I HM K THUT TP. HCM
N - N T
B N T - VI 

-
Ñeà taøi:

-


. N

-g
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
QUY 
H   MSSV: 06117066
 MSSV: 06117028
 -
 -
1)  u:

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 














TP.HCM, N




TP.HCM, 


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









  . 
 (Optimum Multiuser Detector

 user.
neuron
, 
neuron
(Sub-Optimum).

neuron K
l 




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MC LC

PHN A: GII THIU
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 ii
 iii
 iv
 v
 vi
 vii
 x
 xiii
 xvii

PHN B: NI DUNG 1
:  2
1.1  2
1.2  4
 4
 9
1.3 K 14
 14
1.3 16

3.3.1  80
 80
 81
3.4  82
 82
-Forward 83
3.5 G 88
 89
-Marquardt 90
3.6  91
3.7 - 93
3.7 93
3.7.2  96
 97
3.8  Simulink 99
- 104
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 104
4.1  104
4.1.1  104
4.1 109
4.2  116
4.3 -  121
c 121
  123
-C 124
4.4  139
4.4  141
 144

1.3: Du ch BPSK 5
1.4: Gi vector pha cn ca v
BPSK
(t) 6
1.5: Ph tn s cu V
BPSK
(t) 7
1.6: Mu ch BPSK 8
1.7: Mch giu ch BPSK 8
1.8: C .8
1.9: M 9
 1.10: Du u ch QPSK. 10
 1.11: Gi vector ca QPSK. 12
 1.12:  khi mu ch QPSK. 13
 1.13:  khi mch giu ch QPSK. 14
4:  v mng 17
  19
n s 21
i gian 22
 23
D 24
 thu-i ph ca DS 25
: Mng b  .26
Mch tinh chng b DS. 26
. 27
 a chui ng 29
 a chui gi ng 29
M ph sut ca chui gi ng 30
B to chui ghi dch tuy 31
c sinh ng tra 31

Matched filter 67

3.1: neuron 68
3.2:  69
3.3:  69
3.4:  70
3.5:  70
3.6:  71
3.7:  72
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3.8:  .72
3.9:  73
3.10:  73
3.11:  74
3.12:  75
3.13:  76
3.14:  77
3.15:  77
3.16:  78
3.17:  78
3.18:  79
3.19: n 79
3.20:  80
3.21:  .82
3.22: . 83
nh 3.23: . 84
3.24:  84
3.25:  87
3.26:  89

t n 114
t ni C4 115
Ca Cyclone 116
Board DE2 117
 khi ca board DE2 117
Mt mng t nhiu phn t m
t p) 122
 123
 124
- 124
-
DE2 125
 32 bit .127
 129
. 132
 136
h 4.25:  139

 142

 143
Trang xvii

LI

1:
 1.1:  (t) cng vi mu 2 bit 9
 1.2: Bc sinh 31

3.1: r 75

 H th
 H th.
i hn c   th v h th
tin s. n trong mt h th . Thc
t i tt c  th  
 Trang 3
: 















i
i

i





b , rng dng c th u di
bit  dng thp. Vic chuy sang s trong h thng
thng tin s  u ch   
Modulation). Khi ginh dng thc hic ngc li i
u t s .
 Khm s bit nh  truyn bn tin. Vic
 i b n thi
ng truyc s dng hiu qu 
 Khi mt m v mn tin gc nhm m
 m c   m bo ch  n vi tin
m bo ch u
c nhn tin).
 Khhim v u s theo mt
quy luy, nh c
c li xn.
 Gin, gii mc thc hin  b 
c v 
 Khu tuy  ng
truyn vng  
 Trang 4
: 
 Khu chu s  truyn
v th theo mt t c, vi m p nh
cu mn s u ch  i dng xung,
dch chuyn ph tn s cn mu
a b u ch u ra ca b u ch 
hii.
 K

 Khp: l thut ho

c
luc 1 ca chui s c v minh ha  
 Trang 5
: 
t
t
1 10 0 01 0 11 0 01
Binary
NRZ
polar
Carrier
BPSK
Signal
+v
-v

Hình 1.3: Du ch BPSK
 Biu thc ca BPSK

     
. .coscos
BPSK o
v t Ad t t Ф


(1.1)
; w
o
n s  u c
lung bit nh n truyn, vc d(t) = +1 nu bit nh c lu

(1.4)
 Gi vector ca BPSK
 Trang 6
: 
  biu diu v
BPSK
   
 trc chun ca h thng. hiu v
BPSK
 m hai
t

10
( ) 2 cos
S
s t P t


(1.5)

00
( ) 2 cos
S
s t P t


(1.6)
 chc chun ca h th

10

01
( ) . ( )
sb
s t PT u t
(1.10)
Hai tr
1

0
 c biu di






.
1
()ut
Sb
PT
Sb
PT
1
()st
0
()st

Hình 1.4: gi vector pha cn ca v
BPSK






v



khi g ph t
ca






 
2

b
Sb
b
sin fT
G f P T
fT




   
   


   

(1.13)

b
 bit.
f
2
b
f
b
f
 
Gf
3
b
f
b
f
2
b
f
3
b

rong thc tu t (t
f
0
-f
b
n f
0
+f
b
)  xem di tn ph c
b
.
 Mu ch iu ch BPSK
Mu ch BPSK dc ma m
o
t
vi chui s u nh 1).
 Trang 8
: 

 
BFSK
vt
cos
o
At





(t) s   o
n s n tr 
0
. Sau khi qua b lc tn s 2f
0
 tri
ua mt b n s  lc tn s f
0
, nh
v
0
o t u v
BPSK
c.

(
)


Chia 2


0
f
0
2 f
()
BPSK
vt
0

VCO

(Loop Filter)

(LPF)
/4


2
()
PSK
vt
20
( ) cos( )
PSK
v t t


20
( ) sin( )
PSK
v t t


0
cos( )t


0
sin( )t


4
(t). Gi b
e

b
o
(t) l  trong mu thc cu
 c vii dng

 
( ) 2 cos ( )
QPSK o
v t A t t


(1.14)
(t) c trong bng sau
Bảng1.1: G (t) cng vi mu 2 bit
b
o
(t)
b
e
(t)
(t)
1
1
/4
 Trang 10


Hình 1.10: Du ch QPSK
 Gi vector ca QPSK
Dng tru QPSK, nu hai trc t c xem ln

0

sin (
0
t+i u thc c
c vit li dng

 
00
( ) ( )cos ( )sin
QPSK e o
v t Ab t t Ab t t
  
  
(1.15)

e

o
  ca chui s.
Gi P
S

S
 