Ku Ka / /N . S/N . S/N /N, .
, - , . [11]. , , . (FEC) . (BER) . , , /N0, BER, S/N .
C/N /N0, , :
/N0 = C/N + 10 log(1/R) + 10 logDf, (5.32)
/N0 - () N0 (/); R - , /; Df , ; C/N - / Df, .
: /, . , , , , . . . , /N0 , () BER. /N0 , /N0. BER= . BER : FEC. FEC .
/ BER, :
(FEC) | Eb/No BER = , |
1/2 | 4.5 |
2/3 | 5.0 |
3/4 | 5.5 |
5/6 | 6.0 |
7/8 | 6.5 |