. .
.
, , .
Sirius Satellite, , 100 . Sirius 60%, . . 13 . .
Radio 2001 ., Rock Roll, 10 . . , Sirius. , 3 5 .
XM-Radio S- ( 2330...2345 ). 1500 .
XM-Radio , S- , - . XM-Radio.
1990- World Space , 1450...1490 .
World Space : AmeriStar, ; AfriStar, ; AsiaStar, . AsiaStar , AfriStar- , .
World Space . World Space 70% 5 . .
World Space , 40 .
- , VSAT, . 3,6 / 180 VSAT .
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|
, World Space (, ..).
World Space - ( 2-4 ) . , World Space 50 . , - 25 .
World Space , 2011 . 10 . , .
, , L-. 100 .
, , , .. .
() , , .
, , . : 0,9 - Hot Bird (). 200 . . 1,2 , 300 .
. (-) .
. 4.1.
4.1.
- / ETSI | ||||
. 1130-1; | S-DAB (Media Star) | OFDM | 4--4/OFDM | |
.1130-1 | JPL|VOA | TDM | 4- | |
BO.1130+BS.1547 D | World Space | TDM, MCM | 4- | |
.1130-3 | Digital System E | CDM | 4- | |
.712-1 | DSR | TDM | 4- |
, , , .
.
|
|
.
, KB , , :
- , 60% ;
- , (, );
- , , - , , .
, KB 10 .
, KB ( 5,9...6,2 , 17,55...17,0 ), .
- , .
, -, , .
DAB (Digital Audio Broadcasting) - L- . , , .
. VSAT, ( ), . 10-15 .