Nodes and/or clusters of a wireless network operating on the same frequency can operate using three different paradigms: Competition: traditionally, this is information theoretically casted in the framework of interference channels. Cooperation: silent transmitters/receivers can help active transmitters/receivers in the transmission/reception of their messages, but have to extract this message from the underlying transmission or by other methods, and Cognitive Radio Transmission: some devices extract the message(s) of other transmitter(s) from their signals or by other methods, and use it to minimize interference from/to their own transmitted signals.
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