Spectrum Sensing and Resource Allocation for 5G Heterogeneous Cloud Radio Access Networks
作者： Saeedeh Parsaeefard , Hossein Safi , Javane Rostampoor , A. M Montazeri
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摘要: In this paper, the problem of opportunistic spectrum sharing for next generation wireless systems empowered by cloud radio access network (C-RAN) is studied. More precisely, low-priority users employ cooperative sensing to detect a vacant portion that not currently used high-priority users. The design scheme maximize overall throughput while guaranteeing quality service This objective attained optimally adjusting time with respect imposed target probabilities detection and false alarm as well dynamically allocating assigning C-RAN resources, i.e., transmit powers, sub-carriers, remote heads (RRHs), base-band units. presented optimization non-convex NP-hard extremely hard tackle directly. To solve problem, low-complex iterative approach proposed in which time, user association parameters powers RRHs are alternatively assigned optimized at every step. Numerical results then provided demonstrate necessity performing adjustment such balancing sensing-throughput tradeoff.
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arxiv.org参考文章(36)
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