T-DAB , . () , . :
(MSC), , ( );
(FIC), . , ;
, .
. 2.1 . 2.1 , . , - () . MSC FIC, , .
2.1.
4.1 | ||
FIC(FIDC+MCI+SI) | ||
, | ||
, (PAD) | ||
(f=24 48 ) | ||
1 |
2 |
3 |
4 |
4 |
FIBs |
CIFs |
.2.1. :
( (1-5) , .2.1)
1- FIDS; A2 - ; A3 - ; 4 - ; - ; - ; - ( , ); - MUSICAM.
MSC. , (PAD). , , , , , , , "/ " .. PAD, MSC ( AIC), (), .
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. , "" : , . .
MSC (. 2.1). (CIFs). 55296 , 864 (CU), CIFs, 24 . , MSC 2304 /. MSC , CU.
MSC ; , ( 8 /) , , . , .
8 / . . 4 - 24 96 , 19 91 . MCI (. ).
, , , FIC FIBs - , 256 . FIC (MCI), .. . , , . MCI FIBs , MCI .
, MCI ( 6 ) .
MCI FIC (SI), (FIDS) - , : , () (EWS). : , , (, , ), ; , , ; , ..
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, T-DAB, , .
T-DAB , . 30 3 . - - (SFN). (Band ill) - 174...230, 230...240 (L-Band) - 1452...1492 . 1992 . () .
. 2.2 . , , , -, .
I , , , .
2.2.
I | II | III | IV | |
( ), | <375 | < 1500 | <3000 | <750 |
, COFDM | ||||
, | -246 | -62 | -31 | -123 |
, | ||||
, | ||||
FIB | ||||
CIF |
II , 1,5 . III 3 , 47...862 . IV DAB- SFN, L-. , II.
2.3. :
MUSICAM
T-DAB MPEG-1 Audio, Layer 2 ( MUSICAM) , . 48 24 () R3B 8 384 /. 768 / 100 / . , , , . 2.3.
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MUSICAM . , .
2.3.
, | , R / | , | |
( ) ; ( ); | 32,48,56,64,80,96,112,128, 160,192 64,96,112,128,160,192,224, 256,320,384. | ||
8,16,24,32,40,48,56,64,80,96, 112,128,144,160. |
- 4 12 ( , 8 ). , , , , .
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. - (. . 2.3). - , , ;
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. 2.2 MUSICAM.
, , .. .
- |
. 2.2. MUSICAM
:
- ( 32- ). - - (). 32 , .. 32 ( ) /64;
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- ( ). - , , , . (. ) 6- (ScF) , 12 . 120 . , 12 . 12 , 6- . , 36 ( ). , . - . ;
- ( ). - , - , 1152 - ;
- () ( . 2.2 ). - . , ( ), . , . DAB . , . .
, MUSICAM (. 2.2) 24 48 , 1152 T-DAB. . - (32 ), .. , .
CRC (16 ), , . CRC , (ScFSI) , , . , , , . , .
T-DAB, DAB , (F-PAD). 0,667 / . 24 , 48 , F-PAD , . , F-PAD, X-PAD 4 . , .
F-PAD X-PAD :
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MUSICAM (. 2.3) , .
, , .
. , - .
. 2.3. MUSICAM