摘要
LTE-A通过使用中继技术达到提升小区边缘用户吞吐量、拓展小区覆盖和提升小区频谱效率等效果。文中针对中继在小区中配置和使用的问题,在TD LTE-A系统下提出了一种中继规划方案。结合中继位置选择和中继服务基站选择两种方法得到中继规划方法;考虑两跳中继场景下的链路信干燥比,并得到最优频率效率的中继选择算法;结合两者得到中继规划方案并进行仿真。仿真结果显示,采用了中继规划方案的回溯链路的信干燥比得到平均约2 d B的提升,且使小区吞吐量提升了约13%。
In the LTE-A system,the use of relay enhances the cell edge user throughput,expands the area coverage,and improves the spectrum utilization efficiency. In this paper,a scheme of relay planning is proposed to realize the optimization of relay configuration. First,a relay planning method is obtained by combining with relay location selection and choice of relay served base station. Then the SINR of two-hop relay scenario is considered to get the optimal frequency efficiency of relay selection algorithm. Finally the above two are combined to obtain the relay planning scheme. The simulation shows that by using the scheme the SINR of the backhaul link channel is enhanced by about 2 d B and the cell throughput improves by about 13%.
出处
《电子科技》
2016年第5期34-38,共5页
Electronic Science and Technology
