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With Cell DTx, a base station can dynamically be switched to sleep mode during very short periods (inferior to frame duration) in order to reduce its energy consumption. In this paper, we study the problem of energy consumption minimization with Cell DTx for the downlink of an Orthogonal Frequency Division Multiple Access (OFDMA) base station. We show that this problem can be rewritten as a convex...
The cross- and co-tier interference creates the challenges to facilitate the concept of heterogeneous cellular networks (HCNs) in practice. In this paper, we establish a combined learning framework to autonomously mitigate the destructive interference. The macrocell is modeled as the leader and protects itself through pricing the interference from small-cells, which are the followers in the stochastic...
Minimizing the cross-tier and co-tier interference while maintaining high system throughput or spectrum efficiency is one of the major fundamental challenges within femtocell networks. Cognitive radio enabled techniques can play a key role in mitigating the interference effectively by providing more secondary spectrum access opportunities, especially in dense femtocells deployment scenarios. Supported...
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