Comtech EF Data MIDAS 4 System and Design - Manual (Page 52)

System and Design Manual, Revision 2
3–10
Theory of Operation
Example: For 6400bps carrier, QPSK and FEC 3/4, No AUPC or Reed-
Solomon, the bandwidth would be:
Modulation:
6400 * 0.5 = 32000
FEC:
3200/0.75 = 42667
Allocation Factor:
42667 * 1.4 = 59734 Hz
Note: If Reed-Solomon was available, the bandwidth would increase to
65564 Hz.
C C i i r r c c u u i i t t S S e e t t u u p p a a n n d d
T T e e r r m m i i n n a a t t i i o o n n
MIDAS supports the following circuit types:
• Full duplex data and video circuits
• Point-to-point simplex data and video circuits
• Point-to-multipoint simplex data and video circuits
F F u u l l l l D D u u p p l l e e x x C C i i r r c c u u i i t t s s
MIDAS supports full duplex circuits for data and video applications. The full
duplex data and video circuits could be symmetric or asymmetric.