UMTS .
UMTS (DS CDMA), .. ( ), CDMA. ( 2 /) .
, 3,84 /., 5 . DS-CDMA 1 , , IS-95, CDMA. UMTS , , . , 5 , , . 200 4,4 5 .
UMTS , , . 10 , . . .
UMTS : (FDD) (TDD). FDD 5 , TDD 5 - . , . TDD FDD , UMTS () , ITU IMT-2000.
UMTS , IS-95 , GPS. ( ) , GPS.
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UMTS UMTS - -. IS-95, CDMA .
UMTS , CDMA, / . , , .
UMTS GSM. () GSM MTS , GSM UMTS.
2.1 - UMTS
DS-CDMA | |
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3,84 /. | |
10 | |
- - | |
, | , |
2.2
UMTS : , UMTS - UTRAN, . , . .
UMTS GSM GPRS. UMTS. UTRAN . RNC (Radio Network Conroller) .
2.1 - UMTS