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Since non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC) can achieve superior spectral-efficiency and energy-efficiency, the concept of SCN using NOMA with SIC is proposed in this paper. Due to the difference in small-cell base stations’ locations, each mobile user perceives different channel gains to different small-cell base stations. Therefore, it is important...
The limited backhaul capacity has been considered as an important issue that influences the performance of traffic offloading in small-cell networks. We thus investigate how mobile users (MUs) efficiently offload traffic to different small cells with the new paradigm of dual-connectivity, subject to different backhaul capacities of small cells. Specifically, we formulate an optimization problem that...
Machine-to-machine (M2M) communications is regarded as the keystone of Internet of things (IoT) since it enables ubiquitous data exchange among devices without any artificial intervention. Cellular system is expected to play a significant role in successfully implementing the M2M communications for its ready-to-use infrastructure. However, there still exist many challenges, such as co-channel interferences...
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