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Downlink capacity of OFDMA-CR based 5G femtocell networks

机译:基于OFDMA-CR的5G毫微微小区网络的下行链路容量

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This research work explores small cell densification as a key technique for next generation wireless network (NGWN). Small cell densification comprises space (i.e, dense deployment of femtocells) and spectrum (i.e., utilization of frequency band at large). The usage of femtocells not only improves the spectral efficiency (SE) of the Heterogeneous two-tier networks against conventional approach, but also it alleviates outage probability and enhances the achievable capacity. We yield an analytical framework to establish the density of the femto base station (FBS) to a monotonically increasing or decreasing function of distance or radius, respectively. This ensures the enhanced performance in spectrum sharing Orthogonal Frequency Division Multiple Access (OFDMA) femtocell network models. We also illustrate the influence of active Femto users (i.e., users in femtocells, and they are usually low mobility and located closer to the cell center with less fading), cluster size (i.e., a group of adjacent macrocells which use all of the systems frequency assignments) via simulation results.
机译:这项研究工作探索了小型小区致密化作为下一代无线网络(NGWN)的一项关键技术。小小区致密化包括空间(即,毫微微小区的密集部署)和频谱(即,大范围的频带的利用)。相对于传统方法,毫微微小区的使用不仅提高了异构两层网络的频谱效率(SE),而且还减少了中断概率并提高了可达到的容量。我们得出一个分析框架,以建立毫微微基站(FBS)的密度,使其分别具有距离或半径的单调递增或递减函数。这确保了频谱共享正交频分多址(OFDMA)毫微微小区网络模型的增强性能。我们还说明了活跃的Femto用户(即,毫微微小区中的用户,通常移动性较低,并且位于衰落较少的位置,更靠近小区中心),集群大小(即,使用所有系统的一组相邻宏小区)的影响频率分配)。

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