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In this work, a relay-selection scheme is proposed for underlay cognitive radio networks, with fixed and adaptive relaying power. The relay-selection and power allocation is based on the calculation of the log-likelihood ratio (LLR) value, calculated at each of the relay nodes available in the secondary network. No interference is caused to the primary network, through the satisfaction of a low power...
The evolving fifth generation (5G) cellular wireless networks provide higher data rates, enhanced end-user quality-of-experience (QoE), reduced end-to-end latency, and lower energy consumption. The 5G networks will consist of macrocells, femtocells and picocells with heterogeneous characteristics and capacities which will result in a multi-tier architecture. Hence, interference is one of the main...
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