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This is a form of frequency division multiplexing where there are more users than frequencies so some method must be used to assign the frequency to each user needing one.
In organized systems, such as trunked ones, one frequency is used for coordination. There is one station that keeps track of who is where when and assigns new requesters an unused frequency. When they are through they notify the one station who can then assign that frequency to another user.
In an unorganized system each user selects a frequency by listening first to make sure it is not used. The ham bands are an example of this type of system.
This is a form of frequency division multiplexing where there are more users than frequencies so some method must be used to assign the frequency to each user needing one.
In organized systems, such as trunked ones, one frequency is used for coordination. There is one station that keeps track of who is where when and assigns new requesters an unused frequency. When they are through they notify the one station who can then assign that frequency to another user.
In an unorganized system each user selects a frequency by listening first to make sure it is not used. The ham bands are an example of this type of system.
Actually I didn't mean freq. div. multiple access. what I know is - fdma is a type of dynamic memory access(dma). I want to know how is fdma different from dma.
Hi,
FDMA is one among multiple access techniquies.dma(dynamic mem. access) is not at all related to this but,during code writing time allocation of memory normally use static memory allocation or dynamic memory allocation.donot compare FDMA with DMA.
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