Main trade-offs for energy efficiency in cognitive radio networks

In this paper, we investigate the major trade-offs that relates to the energy efficiency in cognitive radio networks. We address five main trade-offs (QoS, network architecture, primary user interference, fairness and security) that are vital since they affect all the components of cognitive radio network's operability, design and implementation. The relationship between these trade-offs and how they affect each other is investigated. How to bring about higher energy efficiency while satisfying the different actors and elements in a cognitive radio network is also studied.

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