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An ad hoc network is a collection of autonomous nodes that communicate in a decentralized fashion without relying on a pre-established infrastructure or on a control unit. They are perceived as an important component of future wireless networks because of their reduced cost and the ease of their deployment. The latter is required for several applications such as for military networks. Since energy and spectrum resources are scarce and expensive, they must be efficiently managed to address the requirements of emerging applications. Considering the lack of a central control unit, this task is complex in ad hoc modes.
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