信源-信源编码-信道编码-调制-信道-解调-信道解码-信源解码-信宿
A.0.5 B.0.8 C.0.7 D.1
A.0.5m B.0.8m C.1.0m D.1.2m
A.STM-N帧中第3行的9×N列,共9×N个字节 B.STM-N帧中第4行的9×N列,共9×N个字节 C.STM-N帧中第5行的9×N列,共9×N个字节 D.STM-N帧中第6行的9×N列,共9×N个字节