ITU-R M.473- (00/0)! (TDMA/FDMA) ""# $ %!& ' " ( ) 34 --./ 0, (MSS) * * )! +, 56 78 89 : ;, - "9 <5 =*< * ' A! +, TV-FM * >?@ * GHz 3- > ""# B!, #C D, *! (!! " # M
ITU-R M.473- ii.. (IPR) (ITU-T/ITU-R/ISO/IEC).ITU-R http://www.itu.int/itu-r/go/patents/en. (http://www.itu.int/publ/r-rec/en ) ( ) ( ) BO BR BS BT F M P RA S RS SA SF SM SNG TF V :.ITU-R 00 ITU 00..(ITU)
ITU-R M.473- * ITU-R M.473- (MSS) (TDMA/FDMA) - GHz 3- TV-FM (00-000) (ITU-R 8/5 ITU-R 0/4 ) - (MSS) TDMA/FDMA.GHz 3- TV-FM.ITU-R M.39 ( - ) MHz 55-58 ( ( - ) MHz 559-55 ( 3 MHz 530-55 ( MHz 559-550 MHz 70-60 MHz 00-70 ( ( - ) MSS ( MSS ( ( C/(N + I) C/N C/I ( *. 5 4.
ITU-R M.473- ( C/(N + I) C/N C/I ITU-R M.39 ( TV-FM MSS MSS TDMA/FDMA TV-FM GHz 3- ) ITU-R M.39.(3. -. -...MSS MSS GSO - 3 MSS.GSO MSS (MSS) TV-FM GHz 3- (TDMA/FDMA) MSS MSS. C/(N + I) C/N C/I.FS.
3 ITU-R M.473- ITU-R M.39 ITU-R F.555 ITU-R F.393 TV-FM FDM-FM C/(N + I). C/(N + I). MSS ITU-R M.39. 5 9.. MSS ITU-R M.39. C/N C/I TV-FM TDMA/FDMA ITU-R SF.766 (B ). ITU-R M.39. TV-FM TV-MF.MSS..IF GHz 3-....007 ITU-R F.393..007 ITU-R F.555
ITU-R M.473-4 (db) ITU-R F.555 ITU-T J.6 C B :km 500 %0 db 57 -. %0, db 45 -. % db 53 S/N S/(N + I).. / MSS. TV-FM C/N C/I ITU-R M.39 C/I. TV-FM MSS TDMA/FDMA. C/I C/N.C/I C/N C/I C/N. n ( + n) (a) C N : (db) C/N total = 0 log i 0 C 0. N : i (db) C/I. (b) () C N + I C I total total = 0 log i 0 C 0. I i C C 0. 0. = 0 log 0 I total + 0 N total : (db) S/N (3) 0.( S/ N ) 0.( S/ I ) S/N = S/(N th + I) = 0 log ( 0 th + 0 ). I N th S
5 ITU-R M.473- db S/I : (4) : S/I = C/I + B B. B (990) ITU-R SF.449 (5) B = 6 + 0 log (ΔF) MHz 0.(MHz) TV-FM B (6) B = S/N C/I = 0 log ΔF.dB 6.[Wu and Chang, 985] B : / 0.7 ( A / A ) /(75 Pn ) S/N A /A C/I = 0 log A /A. P n. (6) : (7) A Pn = C n 75A ΔF n [ nf0 g( nf0 ) h( nf0 )] TV TV k = Δf/f 0 n Δf Pr Vr ).f 0 = 0,0039065 MHz (.f(t) TV fr : P n :g(nf 0 ) :h(nf 0 ) :ΔF : C n [S/N th ] : (8) [S/N th ] = 0 log(3/) + 0 log (ΔF /F max ) + pw + C/N (MHz). :ΔF :F max :pw :C/N :
ITU-R M.473-6.. S/(N + I) : TV-FM C :..ITU-R P.530 I : MSS TDMA/FDMA MSS / MSS. MSS MSS TDMA/FDMA C/I :3. C/N MSS C/N C/I :4. ( ) ( ) :5 C/I (7) (6) B TDMA MSS. B. S/N th :6.((8) ) FDM-FM S/N C/N C/N TV-FM S/(N + I) :7 TDMA/FDMA. :8 MSS. S/(N + I) :9. ITU-R F.555. 3 WU Z.-Y. and CHANG S.-Y. [985] The Interference Theory of TV and System Compatibility. Proc. of International Conference on Communications, IEEE.
7 ITU-R M.473- LEO-F 6 TV-FM.( ) 6 TV-FM LEO-F 6 TV-FM I I f f f f Hop Hop 3Hop 3 6 Hop 6 Station Station Station 3 3 Station 6 6 Station 7 7 Tx Tx 3 Tx 3 6 Tx Rx Rx 6 5 Rx 5 6 Rx 6 473-0
ITU-R M.473-8 TV-FM LEO-F SP5 SP4 SP3 SP)..MHz (SP) MHz 3 (SP7 SP6 TV-FM ( ) TV-FM MHz 95-75.MHz 0 MHz MHz 0 TV-FM LEO-F SP7 SP SP6 SP SP3 SP5 SP4 SP SP3 SP4 SP SP5 SP6 SP7 MHz 75 75 8 84 86 89 9 95 473-0 TV-FM.ITU-R F.45.TV-FM. 3
9 ITU-R M.473-65 PAL TV-FM 0 5,00 0,00 5 35 5 0 68 0 db 8 TV-FM (m 3,7 ) (db) (MHz) (dbi) (MHz) RF (MHz) (dbw) (db) (dbw) () (db) db 0. () (MHz) TV-FM (MHz) (km) 7, E 6,74 E 6,35 E 5,97 E 5,58 E 5,9 E 4,8 E 4,43 E 4,04 E 3,66 E 3,7 E,89 E,50 E, E,73 E,35 E 0,96 E 6,30 N 6,58 N 6,86 N 7,4 N 7,4 N 7,70 N 7,98 N 8,6 N 8,54 N 8,8 N 9,0 N 9,38 N 9,66 N 9,94 N 30, N 30,50 N 30,78 N (STN) STN STN STN 3 STN 4 STN 5 STN 6 STN 7 STN 8 STN 9 STN 0 STN STN STN 3 STN 4 STN 5 STN 6 STN 7
) 3,4 dbw 3,.LEO-F ITU-R M.473-0 LEO-F. (θ/θ 0 ) (db) (db 3 e.i.r.p 3 4 3 LEO-F 0 0 355 45 5 0 7 ( (km) ( ) ( ) ( ) 00-980 00-70 ( ) ( (MHz) (MHz) - 63 TDMA/FDMA 8 5 3, 6 4 500 3 MHz/ MHz / ( (ksymbols/s) (khz) (dbw) / e.i.r.p TDMA /..(7) (6) 3 9,96.ITU-R P.530 30,78 TV-FM B B 4 5 6
ITU-R M.473-3 0 5 0 5 Fade (db) depth (db) 0 5 30 35 40 45 50 0 0 0 3 0 4 0 5 0 6 0 7 Fraction of time 473-03 MHz 0 4 TV-MF B 70 60 Value of B factor (db) (db) B 50 40 30 0 0 0 0 3 4 5 6 7 8 9 0 Frequency (MHz) offset (MHz) 473-04
ITU-R M.473-. 0 s 50 TV-FM S/(N + I) S/I S/N 5 S/(N + I) S/N.ITU-R F.555 S/(N + I). S/N S/I. S/N. TV-FM. S/I..S/N 7 MHz 0 6 5 TV-FM S/(N + I) S/I S/N Cumulative distribution function 0 0 0 3 0 4 0 0 40 60 80 00 0 S/X (db) (db) S/X S/(N S/N + and I) S/(N S/N+ I) S/I S/I ITU-R Recommendation F.555 ITU-R F.555 473-05