nghiên cứu hệ thống LTE và LTE advance

TRƢỜNG ĐẠI HỌC SƢ PHẠM KỸ THUẬT TP.HCM
KHOA ĐIỆN - ĐIỆN TỬ
BỘ MÔN ĐIỆN TỬ VIỄN THÔNG








ĐỒ ÁN TỐT NGHIỆP
 
HỆ THỐNG THÔNG TIN DI ĐỘNG
THẾ HỆ THỨ 4
THEO CÔNG NGHỆ LTE
VÀ LTE PHÁT TRIỂN







GVHD: T.S LÊ QUANG TUẤN
SVTH: PHAN THÁI HẰNG
MSSV: 06117023

PHẦN A: GIỚI THIỆU

 t nghip Trang i


LỜI CẢM ƠN



i thc hi  xin gi li c
 n tt c  
n t-Vi
n-n t ng dn, truyt
kin thc trong sut thi gian hc tp tngn tng
i thc hi thc hi t nghi

i thc hi i li cn
Thng dn,
ch bo trong sut th i thc hin
   

Xin gi li cc bin nhi b
h i thc hin trong thi gian qua.

Mt ln n

i thc hi 
ng

 t nghip Trang ii


QUYẾT ĐỊNH GIAO ĐỀ TÀI

ng MSSV: 06117023
Công nghệ Điện tử - Viễn thông
HỆ THỐNG THÔNG TIN DI ĐỘNG THẾ HỆ THỨ 4 THEO
CÔNG NGHỆ 4G LTE VÀ LTE PHÁT TRIỂN
1) 
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2) 
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3) 
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4) TS. Lê Quang Tuấn
5) 

6) 




BỘ GIÁO DỤC VÀ ĐÀO TẠO
TRƢỜNG ĐẠI HỌC SƢ PHẠM
KỸ THUẬTTP. HỒ CHÍ MINH
CỘNG HÕA XÃ HỘI CHỦ NGHĨA
VIỆT NAM
Độc lập – Tự do – Hạnh phúc
Giáo viên hƣớng dẫn








T.S Lê Quang Tuấn
Ngày ….. tháng ….. năm 2011

 t nghip Trang iii
NHẬN XÉT CỦA GIÁO VIÊN HƢỚNG DẪN
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
Giáo viên hƣớng dẫn






 t nghip Trang iv
NHẬN XÉT CỦA GIÁO VIÊN PHẢN BIỆN
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
Giáo viên phản biện 2






Giáo viên phản biện 1

 t nghip Trang v



LỜI NÓI ĐẦU

Tip theo m h th 
quc t ng ti mt chun cho mng t i th h th 4
t tri dn IP, truyn
s lin vi t t nhiu so vng hin
 truyn d li n 100 Mb/s, thn
1 u ki
Nhu cu cng ln s i, tn tn ca
m m u t t nhu cu c
n s n c 4G. Th nh  nhu cu
cng dng ca mp
internet. Th  i vn s
cung cch v  ng hu tuyn, mng
 i nha h
nhu cu v chng dch v cung cc t  truy
nhp Web, ti xung ti c
ngh ng 4G.
 Vit Nam, hin rm r  ti
na. Theo tin t T a
c lt trm BTS s dng cho dch v 
ngh LTE,  tii Vi
 p vi xu th i thc hi  H th

ng th h th  n 
c  m


 t nghip Trang vi




Ni dung c n:
Phần A: Giới thiệu
Phần B: Nội dung
 Chƣơng 1: Tổng quan các hệ thống thông tin di động
 Chƣơng 2: Hệ thống 4G LTE
 Chƣơng 3: Tổng quan mạng di động 4G LTE Advance
 Chƣơng 4: Mô phỏng
Phần C: Phụ lục và tài liệu tham khảo
 c hi  n ch ci thc hi
 u thit mong s n ca th










 t nghip Trang vii

MỤC LỤC
Phn A: Gii thiu
 ............................................................................................................... i
 .............................................................................................. ii
N ..........................................................................iii
N ........................................................................... iv
 ............................................................................................................. iv
 ................................................................................................................ ivii
 ............................................................................................................. x
 ............................................................................................................ xi

Phn B: Ni dung

 ............... 1
1.1 Lch s n c thng ........................................ 1
1.1.1 Th h 1G (First Generation).................................................................... 1
1.1.2 Th h 2G (Second Generation) ............................................................... 1
1.1.3 Th h 3G (Third Generation) .................................................................. 2
 4G ........................................................................................................ 4
 ..................................................................... 13
2.1 Tng quan ............................................................................................................ 13
2.1.1 Gii thiu v  LTE ................................................................. 13
 LTE v ng trin vng cho
 LTE ............................................................................................... 14
 LTE v Wimax ................................ 14
2.1.2.2 Nhng trin v LTE ............................................. 18
2.1.3 Mt k LTE ............................................................................ 20
2.1.3.1 Ti ....................................................................... 21

2.1.3.2 Hiu sut h thng ........................................................................... 22
2. n vic trin khai .......................................... 24
2.1.3.4 Ki dch chuyn (migration) .......................................... 28
2.1.3.5 Qun ............................................................. 28
 phc tp ..................................................................................... 29
2.1.3.7 Nhng v chung ........................................................................ 29
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2.1.4  lp va LTE ............................................................ 29
2.1.5 Dch v ca LTE .................................................................................... 30
n khai mng LTE ti Vin khai
mng LTE (4G) .............................................................................................. 33
2.2 Cng ..................................................................................................... 35
2.2.1 M ................................................................................................. 38
2.2.2 Mng truy cp ........................................................................................ 41
2.2.3 ng giao tip gia mi mng truy cn .................... 42
ng giao tip v d li ........................................ 44
2.2.5 C ............................................................. 44
2.2.6 Kt ni v ..................................................................... 45
2.3 Kic .............................................................................................. 46
2.3.1 Mt ph ........................................................................... 46
2.3.2 Mt phu khin ............................................................................. 47
2.4  dng trong E-UTRAN ................................................................... 50
 dng cho d lim : 50
2.4.2 m: ............... 50
n chuyn: bao g ............................................... 51
2.5 Truyn d ling xung .............................................................................. 51
n ca OFDM ............................................................... 51
2.5.2 Giu ch OFDM .............................................................................. 55

2.5.3 Thc hin OFDM s dng x  ............................................ 56
 .................................................................................. 58
n thi gian ca truyn OFDM ............................................. 60
2.5.6 S ng symbol tham chiu. .................................. 61
ng tn s vu quan trng c ............... 62
2.5.8 La chn nh n ca OFDM ......................................... 64
2.5.8.1 Kho ................................................ 64
2.5.8.2 S  ............................................................................ 65
2.5.8.3 Chi ..................................................................... 66
2.5.9 S bit truyn tc thi ..................................................... 67
 ho .............................. 67
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2.5.11 Truy ....................................... 69
2.6 Truyn d liu  ................................................................................... 71
2.7 MIMO .................................................................................................................. 73
n v MIMO LTE ........................................................................... 73
2.7.2 SU-MIMO (Single user MIMO) ............................................................. 74
2.7.3 MU-MIMO ............................................................................................ 74
............................................................................ 76
2.8 MIMO-OFDM ..................................................................................................... 77
 ................... 82
3.1 Tng quan ............................................................................................................ 82
3.2 Nh  xut cho LTE-Advance................................ 83
3.2.1 Truyn d ph tn ......................................... 83
3.2.2 Gi .................................................................................. 84
3.2.3 Truyn dm phi hp ................................................................. 84
 l chuyn tip ............................................................ 85
3.2.5 MCMC CDMA ...................................................................................... 86

3.2.5.1 H thng Multicarrier CDMA .......................................................... 86
3.2.5.2 H thng Multicode CDMA ............................................................. 90
3.2.5.3 H thng MCMC CDMA ................................................................. 94
 .................................................................................... 98
4.1 Giao di ............................................................................. 98
4.2. H th-FDMA ......................................................................... 100
ng h thng hp: c nh, di
chuyn ch), di chuy
 thng SC--CDMA ........................................... 108

Phn C: Ph lu tham kho




 t nghip Trang x






 t nghip Trang x




LIỆT KÊ BẢNG

B c dim c thng .................................. 11

Bng 2.1 Tin ca 3GPP ....................................... 16
Bng 2.2  ............................................................................ 17
Bu v hiu sut ph  .................. 23
Bu v thn, LTE--WCDMA ...... 25
B lp vt a LTE ..................................................... 29
Bng 2.6 T nh ca LTE theo lp ........................................................ 30
Bng 2.7 ch v ca 3G so vi 4G LTE .................................... 31

 t nghip Trang xi



LIỆT KÊ HÌNH

  n IMT-Advance .................... 7
  ng 4G ................ 8
 n c  ........................ 15
t k LTE ..................................................................... 20
 ph i 2 Ghz cn IMT-2000 ....... 26
 v p t ph
ca mt h thc trin khai .................................................... 27
 B  ............................................................................. 37
 thng m .......................................................................... 37
nh 2.7 S chuyi trong cng t UTRAN sang E-UTRAN .... 36
 .................................................................................. 37
n trong mng EPS .................................................... 37
a E- ............................... 39
p vi P-GW trong m ........... 44
ng vi 3G UMTS ............................................... 45
p giao thc mt phi a E-UTRAN........... 46

p giao thc mt phu khin ca E-UTRAN ............ 47
c ....................................................................... 48
 ........................................... 52
u ch OFDM .......................................................................... 53
i thi gian tn s OFDM ....................................................... 54
n ca giu ch OFDM ................................ 55
u ch OFDM bng x  ................................................ 57
u ch OFDM bng x  .......................................... 58
 i gian nhng . 58
 ....................................................................... 59
n tn s ca truyn nhn OFDM .............................. 60
 ng mu thu OFDM .................................. 61
 t nghip Trang xii


i thi gian tn s vi nhng symbol tham chiu bic .... 62

a chn tn
s .................................................................................................................. 63
t hp vi xen tn s trong truyn OFDM ................... 64
 c WCDMA ........................ 66
 ho......................... 67
 ................................................. 68
 hoch truyn Broadcast .......................................................... 69
 ....................................................... 70
 a truyng thn ........... 71
 khi DFT-s-OFDM ............................................................ 72
--MIMO .............................................. 74
a MU--MIMO .................................... 75
   ................................................... 75

 .................................................................. 76
 -OFDM ........................................................... 77
 ..................................................... 84
n dm phi hp ......................................................... 85
 tu MC-CDMA cho m ............................ 87
c tu MC-CDMA .............................................. 88
 khi b -code CDMA kiu truyn song song ....... 90
 khi b thu Multi-code CDMA kiu truyn song song ......... 91
  thu h thng Multi-code CDMA kiu ........ 92
-code CDMA t ......................................... 93

 S tu ri rc PMC-MC-CDMA ..................................... 95
  n cho s tu ri rc PMC-MC-CDMA ......... 95
 3.13: S tu ri rc MMC-MC-CDMA .................................... 96


 t nghip Trang xiii

NỘI DUNG









 t nghip Trang 1

 thng
CHƢƠNG 1: TỔNG QUAN CÁC HỆ THỐNG
THÔNG TIN DI ĐỘNG
1.1 Lịch sử phát triển của các hệ thống thông tin di động
1.1.1 Thế hệ 1G (First Generation)
 th s d

chia theo tn s u ch tn s FM vm:
 c truy nhp: FDMA.
 Dch v i.
 Chng thp.
 Bo m
Mt s h th
 NMT (Nordic Mobile Telephone): s dn 450Mhz trin khai tc
B
 TACS (Total Access Communication System): trin khai  
 AMPS (Advance Mobile Phone System): trin khai ti Bc M i
n 800Mhz.
1.1.2 Thế hệ 2G (Second Generation)
H thng m chuyn mch k thut s (digital
circuit-switched). K thu m sau:
 
 Chng thoi t
 H tr ch v s liu (data).
 c truy nhp.
Mt s h th
 t nghip Trang 2

 thng
 GSM (Global System for Mobile Phone) s dc truy cp TDMA
c trin khai t
 D-AMPS (IS-136-Digital Advance Mobile Phone System) s dc
truy cc trin khai ti M.
 IS-95 (CDMA One) s dc truy cc trin khai ti M
c.
 PDC (Personal Digital Cellular) s dc truy cc trin
khai ti Nht Bn.

1.1.3 Thế hệ 3G (Third Generation)
 h th ba ca chu n thon c d
liu thoi (ti d liu, gi email, tin nh
cung cp c hai h thn mn m thng 3G
u mt mng truy ci h thng 2G him
mnh c yn, nh li
nh chng cao cho c  n  
t 
Mi t d liu cao, capacity ca h thng lu qu
s dng ph tu ci tit lo ng
3G, tt c u d FDD ln TDD),
-SCDMA:
- UMTS c g s dng k thup WCDMA.
c chu c la chn bi hu
hp dch v   d liu t
1920Kbps (gc t t  tm 384Kbps 
ci tin t d liu ca3G, hai k thu ngh. Khi
c 2 k thuc trii ta gc
bi 3,5G.
 t nghip Trang 3

 thng
 HSDPA:  ng xung, t NodeB v ng).
T tc t  t tm 1,8Mbps
(hoc tt lng
u tri c
 gii.
 HSUPA:  i tin QoS. K thu
i t 
p dch v n khai

mng HSUPA  p m hoch trin khai mng
HSUPA.
- CDMA2000: bao gm CDMA2000 1xRTT (Radio Transmission Technology),
CDMA2000 (Evolution --DV(Evolution -Data
c chu 3G
c la chn bp mng CdmaOne.
 CDMA2000 1xRTT:  3G, tuy
  ca
 n 307Kbps, song hu hn khai ch gii hn
t peak  144Kbps.
 CDMA2000 EV-DO: s dng m li
cho t d ling xu
1xEV-DO Rev A h tr truy ng xun 3,1Mbps
c bi y t n -DO Rev
p mng g truyn d liu vi
t 73,5Mbps.
 CDMA2000 EV-DV: p tho li
CDMA2000 EV-DV cung cp t ng xun
 i hn
 t nghip Trang 4

 thng
vin ca 1xEV-p mng 
n EV-DO.
- TD-SCDMA  ngh bi "China Communications Standards
c ITU duyn 3G ca Trung Quc.
TD-- hon
hp 1,6MHz (cho t 2Mbps) hay 5MHz (cho t 
ca TD- u ln. Nhiu th nghim v  
din ra t  vn hi Olympic g.

1.2 Công nghệ 4G
Nhu cầu đối với các hệ thống sau 3G
p thit b m
i m
n thong d
(Short Message Service) tr ng dng truyn d li
c th ng mn thon
nh n SMS do bu thp v 
th ch v a nhng dch v truyn d li
-ng, duyt u dch v a. Nhng ng
dy tr n thc nh s xut hi
 liu theo giao th
u v bandwidth cng d 
 tht s ng s 
cu v bandwidth:
 M s dng m
i s dng dy cn truy cp mng.
 Nn: tuy nhng n l c
 y h 
bi  ng
 t nghip Trang 5

 thng
ng d liu cc truyi trang Web. Vic ti xuc
  biu v 

   t
ng dng mi s d
kh yu ch  n
s ng truyn ti Internet, bi

 th ni dung n chia s nh
nh ca h v
 Voice over IP: th gii tho n sang
ng VoIP. Nhiu kh  khoa, nhiu mng thoi chuyn
 nh hin nay s chuyn thoi d
 y, v n truy cp mng, nhi s dng
ch v thoa h ng DSL ho
Hi thy nhn di, b ng thoi
chuy st gim s t
qu p dch v tho 
 chuya.  y m 
m dch chuyn  c bi
u v  truyc thoi qua mng truyn
chuy.
 S thay th  nh: 
m   nh lc
y,  nhip dch v 
 gng km gi hong
i kh 
thit b ng UMTS/HSDPA hoc CDMA ca h
bu cnh tranh trc tip vp dch v n cnh
t ng c
 S cnh tranh t nhp dch v  mt s
p dch v i kh p
 t nghip Trang 6

 thng
ng ng Wifi hoc Wimax/802.16. Nh
cung c cnh tranh trc tip vp dch v 
CDMA truyn thng vng trong th 

Mt s  ng hon
tric thit k  ng nhu ca 3GPP,
i cy, nh 
 

ng ving quc t

  thng IMT-2000: tc nhng h th UMTS
CDMA2000.
  thng Enhanced IMT-2000: s n c thng IMT-2000 (tc
 ng th h a ca

  thng IMT- thng thuc lo thng 4G.
c t -
tiu  thng k tip sau IMT-2000. ITU-
rng c ng m  
IMT-2000, tuy n  t ng IMT-Adv
 n gi-  
h th
Trong giu, mt s  c ti-
th h sau ca truy nhn. Chng h c h tr mt
phn kinh t t  u v 
nim ct nhin t gn ging v
t m s li c thit k ng

 t nghip Trang 7

 thng
ng tin ti 4G. LTE s tn tu ca
4G, ti i dn t 3G UMTS sang

u ci dn t LTE sang IMT Adv
 n IMT-
i h-Advance. LTE-Advance
t phn c-Advance s c tri
2013 ho

.1 : T  n IMT-Advance
cng chuy
c hin k ho th xut
(Ultra Mobile Broadband) hoch tin ti 4G.
Mt l n ti mng 4G ca c c th hi1.2:
 t nghip Trang 8

 thng

1.2  ng 4G


 UMB
Chun UMB hin bi 3GPP2 vi k ho 
c 2009.
Mt s m k thu
  thun:

 thut beamforming antenna