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In this paper, the authors present a networking perspective of cooperative spectrum sharing in wireless networks. For unlicensed band like WiFi, e.g., 2.4 GHz, it is particularly critical that network nodes share the same spectrum cooperatively and efficiently. They discuss several cooperative techniques for spectrum sharing in wireless networks including strategies to cooperatively reduce the transmitting power, and approaches to cooperatively reduce transmission interference. They also formulate the spectrum sharing problem as a cooperative game. Finally, they conduct extensive experiments to demonstrate techniques and phenomena for cooperative spectrum sharing in wireless networks.
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