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2、 .6 7III 547072011ETSI TS 102 509 v1.1.1 (2006-05) (JTC) - (EBU), (CENELEC) (ETSI). 30 :- (): 148,5 283,5 1 1;- (): 526,5 1 606,5 1 3 525 1 705 - 2 1;- (): 2,3 27 . , -:- , , ( 11 );- . , , , , . :- ;- ;- , , - . , , , , , , . , - 30 , 1998 . (DRM). DRM , DRM . , , . - (http:/www.drm.org/) DRM.IV 54
3、7072011 DRM (SCS)Digital audio broadcasting system DRM.Single-channel simulcast transmission of programs (SCS) 201207011 , - (Single Channel Simulcast, SCS ). 30 . () () . DRM , - ETSI 2, DRM - . , , -, . SCS. .2 .3 , , 3.1 :3.1.1 (Fast Access Channel; FAC): -, , -.3.1.2 OFDM (OFDM symbol): , -, - .
4、3.1.3 (Single Frequency Network; SFN): , .1 547072011 3.2 :kn n- (0 c163n c163N) DRM/AM SCS c;N DRM/AM SCS .3.3 : ; (3,95 26,1 ); ; (0,1485 0,2835 ); ; (0,5265 1,6065 );AM (Amplitude Modulation) ;DRM (Digital Radio Mondiale) ;DSB (Double Sideband) ;FAC (Fast Access Channel) ;ITU (International Telec
5、ommunication Union) ();MCS (Multi Channel Simulcast) ;OFDM (Orthogonal Frequency Division Multiplexing) - ;SCS (Single Channel Simulcast) ;SFN (Single Frequency Network) ;SSB (Single Sideband) , ;VSB (Vestigial Sideband) .4 DRM DRM, ETSI 2, - 30 . ITU-R 1 - , . , DRM - . ( DRM ) . (, - ) . ETSI 2 (
6、) - (DSB, VSB SSB) DRM . 9 10 ( , Multi Channel Simulcast, MCS). DRM (-) ., ,DRM, DRM , DRM - MCS . - . DRM 16 ( 30 %- ). ( ) 6 , , ITU-R 3.2 547072011 MCS ( ), - : - (SCS). SCS 5.5 DRM/AM 5.1 DRM - . - SCS :1) DRM ;2) SCS ETSI 2;3) SCS ( ) ;4) , - DRM . SCS , - 1. :- DRM, (FAC) () 4,5 5 ;- ();- . DRM , . (01ETSI2). , - SCS - ( ), . DRM . - ( ) , DRM , . 2. - DRM/AM SCS , DRM -. 30 %, 18 (. . 18 ).3 547072011 1 DRM/AM DRM - (, - ETSI 2). , SCS SSB .5.2 , ITU-R 3. 3 DRM/AMSCS . .1) DRM ( ), - . - . . ,
