??????????? ????????????? ??????????????? ??????? ? ??????????? ??? ??? ???????? ????? LTE - PowerPoint PPT Presentation

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??????????? ????????????? ??????????????? ??????? ? ??????????? ??? ??? ???????? ????? LTE

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Title: UMTS Author: skvg Last modified by: skvg Created Date – PowerPoint PPT presentation

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Title: ??????????? ????????????? ??????????????? ??????? ? ??????????? ??? ??? ???????? ????? LTE


1
??????????? ????????????? ??????????????? ???????
? ??????????? ??? ??? ???????? ????? LTE
  • ??????????? ????????? ??? ???? ???????????
    ????????? ????? LTE ? ??????,
  • ??????, 29 ?????? 2009 ?.

2
??????????? ????????????? ??????????????? ???????
? ??????????? ??? ??? ???????? ????? LTE
?.?. ??????????, ????. ????. ????, ???
????????? ???????????, ???????????? ???????
?????? ??? ????? ? ?????? ????? ????????? ???
????
3
???????? ???????? ?????????? ??????? ?????
2006
2007
2008
2009
2010
Evolved EDGE DL 1.0 ????/? UL 947 ????/?
GSM/EDGE 474 ????/? (??????? 100-150 ????/?)
LTE (Long Term Evolution)
3GPP GSM
2x2 MIMO DL 173 ????/? UL 58 ????/? (20 ???)
4x4 MIMO DL 326 ????/? UL 86 ????/? (20 ???)
  • ?????? ???????????
  • ???????????
  • 1920-1980 ???/2110-2170 ???
  • ?????????????? (??????????????)
  • 790-862 ??? 900 ???, 1800 ???
  • 2500-2690 ??? 2,3-2,4 ???
  • 3,4-3,6 ???
  • ?????? ??????
  • 1,4 ??? 3 ??? 5 ??? 10 ???
  • 15 ??? 20 ???
  • ?????? ?????? ?? 5 ??
  • ????? ???????? ??????? ?? 10 ??
  • (???????? ?????? ? ????????
  • ???????)

HSPA (Rel8) DL 42 ????/? UL 23 ????/? (5 ???)
HSDPA/HSUPA (Rel6) DL 14,4 ????/? UL 5,76
????/? (5 ???)
HSPA (Rel7) DL 28 ????/? UL 11,5 ????/? (5
???)
HSDPA (Rel5) DL 14,4 ????/? UL 384 ????/? (5
???)
3GPP UMTS
MIMO 2x2
UMB (Ultra Mobile Broadband)
2x2 MIMO DL 173,0 ????/? UL 58,0 ????/? 20 ???
2x2 MIMO DL 140 ????/? UL 34 ????/? (20 ???)
4x4 MIMO DL 280 ????/? UL 75 ????/? (20 ???)
EV-DO (Rev 0) DL 2,4 ????/? UL 153 ????/? (1,25
???)
EV-DO (Rev A) DL 3,1 ????/? UL 1,8 ????/? (1,25
???)
EV-DO (Rev B) DL 14,7 ????/? UL 4,9 ????/? (5
???)
3GPP2 CDMA2000
?????? ??????????? 450 ??? 700 ??? 800 ???
900 ??? 1800 ??? 1,9 ??? 2,1 ???
?????? ?????? 1,25 ??? 2,5 ??? 5 ???
10 ??? 15 ??? 20 ??? ????? ???????? ???????
?? 14 ??
4
??????????? ???????????????? ???????? ????????
?????? ?? ?????? ?????? LTE
5
??????????? ??????????????? LTE
????? ????? ???????????? OFDMA (Orthogonal
Frequency Division Multiplexing Access)
(????????????? ?????????????? ???????????????????
). ????????? ?????? ???????? ??????????
????????? ? ???????? ????
MIMO (Multiple Input Multiple Output)
?????????? ???????????????-??????????
??????????? ????????????. ????????? ???????????
???????? ?????????? ??????????? ? ????????
????????????? ??????
??????????? LTE
6
??????????? ?????????????? ??????? ? LTE
(OFDMA, SC-FDMA)
OFDMA
SC-FDMA
User 1
User 2
User 3
Time
Frequency
180 KHz
7
??????? ????????-?????????? ??????? ?
LTE(????????? ???? RB)
???. ???-?? RB 6 ????. ???-?? RB 110
110 RB (????.)
6 RB (???.)
f
?????? ???????
20 ???
1,4 ???
15 ???
3 ???
5 ???
10 ???
?????? ?????? (5 ???)
???-?? RB
?????? ??????, ??? 1,4 3 5 10 15 20
?????? ?????????? 15 ??? 15 ??? 15 ??? 15 ??? 15 ??? 15 ???
???????? ???????, ??? 1,92 3,84 7,68 15,36 23,04 30,72
???-?? ?????????? 73 181 301 601 901 1201
???-?? RB 6 15 25 50 75 100
?????? ???????? (9 RB)
f
8
?????????????? ?????? LTE
????? ???
??????????? ?????????????
?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ??????
1.4 ??? 3 ??? 5 ??? 10 ??? 15 ??? 20 ???














9
???????? ? ??????????? ????????????? ??? ???
????? LTE
????????? ??????? ??????? ???????
???????????? ?????
??????????????? ??????????? LTE
??????????? ????????????? ??? ?? ????
???????????? ?????? ?????? ? ??????????
????????? ???????
????????????? ???
???????????? ???????
???
?????????????? ????? ??????? ?????? ????????
?????????????? ?????????? ??, ??????????????? ?
?????? ?????? ??????? ??
??????????? ????????????? ??? (?????? ??????)
????????????? ??????????- ???????? ???? ??
????????????? ? ??????? ????????????? ???
MIMO ??????????? ????, ??? ??????
???????? ????? ??????? ??? ?????? ?????? ??????
????????? ???????????? ???????????
10
??????? ?? ????????
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