Demand Assigned Multiple Access
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Demand Assigned Multiple Access (DAMA) is a technology used to assign a channel to clients that do not need to use it constantly. DAMA systems assign communication channels based on news issued from user terminals to a network security system. When the circuit is no longer in use, the channels are again returned to the central pool for reassignment to other users.
Channels are typically a pair of carrier frequencies (one for transmit and one for receive), but can be other fixed bandwidth resources such as timeslots in a TDMA burst plan or even physical party line channels. Once a channel is allocated to a given pair of nodes, it is not available to other users in the network until their session is finished.
It allows utilizing of one channel (radio or baseband frequency,
DAMA and PAMA are related only to channel/resource allocation and should not be confused with the
DAMA is widely used in
DAMA is often used in military environments due to the relative simplicity of implementation, ease of modeling, and the fact that military usage profiles are a very good fit. In military
References
External links
A thumbnail overview can be found at https://web.archive.org/web/20080704202615/http://www.defense-update.com/products/d/dama.htm
Comprehensive information on DAMA Technology is available at : https://web.archive.org/web/20120208154524/http://stinet.dtic.mil/cgi-bin/GetTRDoc?AD=ADA336247&Location=U2&doc=GetTRDoc.pdf
A useful article with some interesting history can be found at https://web.archive.org/web/20071109100406/http://www.birds-eye.net/definition/d/dama-demand_assigned_multiple_access.shtml