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Circuit setup and termination, Full duplex circuits – Comtech EF Data MIDAS 4 System and Design User Manual

Page 52

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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.

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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

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MIDAS supports full duplex circuits for data and video applications. The full
duplex data and video circuits could be symmetric or asymmetric.