- SDMA - Space Division Multiple Access - ().
MS BTS, . , SDMA , .
, FM.
- FDMA - Frequency Division Multiple Access - ().
FDMA BTS MS () .
- MS BTS - .
-
FDD - Frequency Division Duplex.
, GSM 900:
- ( ) 890,2 - 915,0;
- ( ) 935,2 - 960,0.
- 45,0;
- - 124;
- () - 200,0 (0,2).
- TDMA - Time Division Multiple Access - ().
TDMA FDMA . , , .. ( ). .
, , .
- TDMA . (, ).
, . TDMA FDMA .
TDMA ( ) : GSM, IS-54 (PS), IS-136 (AMPS), DECT . - .
() DECT:
10,0, .. 417,0.
10,0, .
|
|
1 12
417 BTS
MS
MS 1 12- . , . DECT .
- CDMA - Code Division Multiple Access - ().
- CDMA - ( ) MS .
. (, ) , , .
( ) CDMA FDMA TDMA.
CDMA ( ) .
, .. ( ) BTS, .. , "" .