EDGE - Enhanced Data Rates for GSM Evolution - GSM - GSM- 3G -UMTS - Universal Mobile Telecommunication System - .
EDGE (ESTI) 1997 . EDGE - 384,0/ ( ~171,2/ GSM/GPRS).
EDGE Web-, , . , - .
, , , - , EDGE - Enhanced Data rates for Global Evolution - 384,0/.
EDGE , 3G .
EDGE - ITU- (-) 3G.
EDGE 3G - , . EDGE - GPRS: .
EDGE .
EDGE TDMA - () - . " ", () - 200,0, GSM.
EDGE ( ), , , .
3G - 3 Generation - , , , .
, , , (120 /), 144,0/, (4,0/) - 384,0 /, - 2,048/.
3G .
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3G - , , MS BTS.
3G , .
3G , .
3G , .
, , .
, GPRS EDGE, UMTS(UTRA) /W-CDMA - ( UMTS)/ (), , , , , Web-, ..
2G , 3G, 4G.
UMTS - 3G, ETSI. 2G - GSM .
UMTS.
- : 1920,0 - 1980,0 ( ); 2110,0 - 2170,0 ( ).
- ( ) - 190,0.
- - 5,0, 200,0.
- ( ) - 200,0.
- :
) - 9612,0 - 9888,0;
) - 10562,0 - 10838,0.
- , - 5,0.
- :
1. - QPSK;
2. HSDPA - QAM : 16 64.
- - .
- 1- - 384,0/.
- - "" ( ) .
- :
) - 256 4, - 15,0 960,0/
(15,0 64 = 960,0/);
) - 512 4, 2 - 7,5 / 960 /.
- 10,0 , 15 (), .
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- - , . On-line - " " , Off-line - " " - . , , , .
H-SCSD
H-SCSD High- Speed Circuit Switched Data - . 4G, 14,4/, - 3,0/. H-SCSD GSM-.
H-SCSD , , -, , SMS, .
GSM , H-SCSD (), . 14.4/,
4- 57,6/.
H-SCSD GSM , .
. () .
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H-SDPA
H-SDPA - High-Speed Downlink Packet Access - - , 4G. 14,4/, - 3,0/.
H-SDPA :
- - QPSK - 16 QAM;
- - HARR - Hybrid Automatic Repeat Request;
- MAC-high speed.
H-SDPA - High-Speed Downlink Shared Channel - HS-DSCH, . , (), .
UMTS, H-SDPA (). 3G
( ) 384,0/ ( , 3G, 2,4/).
, H-SDPA ( , ).
5,0 30,0 , 3,0 20,0 . , DSL.
: HSDPA 2008-2009.
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H-SDPA : WiMAX (EEEI 802.16) - , () 70,0/, , H-SDPA. EEEI 802.16 -WMAN - WiMAX . - , HSDPA , .. .
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H-SUPA
H-SUPA - "Highly () Seductive () Ultra () Pace () Technology ()"
H-SUPA : "High-Speed () Uplink () Packet () Access ()".
Samsung . "" , , . 5 W-CDMA, . H-SUPA 2007 .
H-SUPA - W-CDMA, . 2,0/ ( MS BTS - ) 3,6/ ( BTS MS - ).
H-SDPA MS CCTrCH - Coded Composite Transport Channel, .
H-SUPA , , , H-SDPA, , .
5. W-CDMA FDD UTRA TDD
W-CDMA FDD | UTRA TDD | |
, | 2110,0 - 2170,0 . 1920,0 - 1980,0 . | 1900,0 - 1920,0 . 2010,0 - 2025,0 . |
DS-CDMA | TD-CDMA | |
, | 25; 27,5; 215 | |
, | ||
(), / | 3,84 | 3,84 |
: | ||
. | QPSK | QPSK |
. | QPSK | QPSK |
, | 27,2 | |
, | 5,787 (.)/ 4,475 (.) | 6,041 (.)/ 5,279 () |
: " " - "", "" "", , 3G( ) .
3G :
- 1900,0-2200,0,
- ,
- ..
- ,
- On-line .
3G , 2008.
, , , , 4G , 3G .
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, (-) 4G , 1,0/ / 100,0/ 120,0/.
4G, , " " ( , - , , ..) . 3,5G. , ( ), "" , 4G, 3,5G . , , , .
:
- 1G - - ( NMT).
- 2G - - ( GSM, CDMA, AMPS, D-AMPS).
- 3G - - ( GPRS, UMTS) - . 3G , 3G - 4G. 3G - - 4G.
- 4G - . 4G, , , 100,0/ (EDGE, GMM, OFDM .).
- 5G - 1,0/.