摘要
针对引入家庭基站后带来的干扰问题,提出了干扰协调算法.首先由家庭基站获取的邻居列表建立干扰矩阵,然后根据干扰矩阵对家庭基站进行分组,不同组之间可以频率复用.同组家庭基站在分配正交频率资源的基础上,充分考虑家庭基站用户的信道差异和负载差异,进行频率资源的动态分配及有效利用,保障了家庭基站用户的Qo S.算法分析了在不同干扰门限下家庭基站分组规模的大小以及对频率资源分配的影响,仿真结果表明,在合适的干扰门限下,算法实现了不同分组之间的频率复用,有效解决了家庭基站之间的同道干扰,提高系统容量和频谱效率.
The interference coordination algorithm is put forward by the interferential issues coming from bringing up the Femtocell.Firstly,a interfering matrix should be established according to a neighbor table achieved by the Femtocell.Next,the femtocell is to be deviced into groups in line with the interference matrix,and a frequency reuse can be producted in different groups.On the basis of the orthogonal frequency allocation in a same group,the differences of channel and traffinc of femtocell should be fully considered so that the resources can be allocated dynamically and effective use,to protect the femtocell divide of users Qo S.We analyze the impact of interference threshold which has impact on the size of the group size of femtocell and at different frequency resource allocation in algorithm,as the result of the simulation,under an appropriate interference threshold,the frequency reuse of different groups are brought out by this algorithm.Thereby,the algorithm solves the co-channel interference efficiently between femtocells and promotes the system capacity and spectral efficiency.
出处
《小型微型计算机系统》
CSCD
北大核心
2016年第4期807-810,共4页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(11273001)资助
关键词
LTE系统
家庭基站分组
干扰协调
频率复用
LTE system
femtocell divide group
inter-cell interference coordination scheme（ICIC）
frequency reuse
