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Demand Assigned Multiple Access (DAMA)
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One of the widely used satellite channel access
protocols is Demand Assigned Multiple Access (DAMA). This technique
matches user demands to available satellite capacity. Satellite
channels are grouped together as a bulk asset, and DAMA assigns
users variable time slots matching user information transmission
requirements. While user notices no change in channel quality, the
result is a dramatic increase of up to x4 in communications
capacity, number of supported users and networks. DAMA is most
effective where there are multiple users operating at low to
moderate duty cycles, which is the typical military usage pattern.
The network can assign different priorities or serve users on a
"first come first served" basis. Prioritization technique is
suitable for command type nets, while the minimum percentage
operation is suitable for support/logistic nets.
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