基于部分频率复用的超密集网络覆盖率性能分析  

Performance analysis of coverage probability in ultra-dense small cell networks based on fractional frequency reuse

作　　者：王钰炜 葛佳[1] 俞晖[1] Wang Yuwei;Ge Jia;Yu Hui(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《上海师范大学学报（自然科学版）》2018年第2期171-178,共8页Journal of Shanghai Normal University(Natural Sciences)

摘　　要：在超密集小小区网络中,通过区分视距传播和非视距传播,提出了使用部分频率复用的策略,以提高用户通信质量,并基于随机几何理论和概率论推导出表征用户通信质量的覆盖率表达式.仿真结果表明,当小小区用户密集到一定程度时覆盖率会降低,而采用部分频率复用策略可以提高覆盖率,在用户信干噪比阈值较高时提升效果尤为明显.Based on stochastic geometry theory and probability theory,a fractional frequency reuse strategy was proposed to improve user communication quality by differentiating line-of-sight propagation from non-line-of-sight propagation in ultra-dense small cell networks.The simulation results showed that when the small cell density reaching to a certain extent,the coverage would be reduced.However,fractional frequency reuse strategy made a greater role in improving the coverage probability,especially when the user′s Signal to Interference plus Noise Ratio(SINR)threshold was high.

关 键 词：视距 非视距 超密集小小区 部分频率复用 

分 类 号：TN929.5[电子电信—通信与信息系统]