摘要
3GPP制定的LTE标准中,上行链路采用部分功率控制方法,该方法可以使不同路径损耗下用户目标信干噪比不同,提高小区性能的同时保证小区边缘用户的速率。文章针对标准中补偿因子设置不够灵活,导致小区中心用户难以发挥自身优势的问题,提出位于终端侧基于补偿因子自适应的功率控制算法,仿真分析表明该算法在吞吐量和平均速率方面优于标准中方法的同时,控制了对邻近小区的干扰水平。
Uplink factional power control is adopted by the specification of LTE released by 3GPP.By this scheme,tanget SINR may be different with distrnctive path loss,which means improved cell performance and cell-edge bit rates. To solve the problem that static compensation factor results in underu tilization of cell-center users,this paper proposes a power control scheme base d on adaptive compensation factor.Simulation shows higher throughput and mean rate over the factional power control scheme and the interfer ence to neighbor cells is effectively controlled.
出处
《信息工程大学学报》
2011年第5期560-564,共5页
Journal of Information Engineering University
基金
河南省杰出青年科学基金资助项目(074100510023)
关键词
补偿因子
功率控制
自适应
干扰门限
compensation factor
power control
adaptive
interference threshold
