摘要
分析了OFDMA上行系统中,由宏基站(macrocell)和家庭式基站(femtocell)组成的双层网络,并提出了高效的资源分配算法。为避免严重的跨层干扰导致双层网络中的资源分配不协调,提出了一个跨层干扰控制算法。在基于干扰控制算法的结果上,提出包括功率分配和频谱分配的资源分配算法,以满足UE的目标速率,并获得较好的吞吐量性能。通过仿真,结果显示所提的资源分配算法相比较传统的算法,尤其在UE QoS保证和吞吐量性能的体现上,能获得明显的性能增益。
In this paper, an effective resource allocation scheme in macrocell/femtocell OFDMA uplink networks is proposed. A cross-layer mitigation algorithm is designed firstly to avoid the severe cross-layer interference which will decouple the resource allocation between two networks. Then utilizing the result of cross-layer mitigation, a resource allocation strategy including power allocation and fre- quency assignment is proposed to satisfy the UE's target data rate and obtain the throughput performance. Simulation results show that the proposed algorithm can achieve significant performance gains over the traditional methods, especially in view of the guarantee of UE's quality of service(QoS) and throughput performance.
出处
《无线电通信技术》
2013年第1期13-15,42,共4页
Radio Communications Technology
基金
北京邮电大学-中兴联合基金专项课题(2011ZTE01-06)
作者简介
王广德(1987-),男,硕士研究生。主要研究方向:LTE及LTE-A无线资源管理技术。
常永宇(1963-),女,教授,博士生导。师。主要研究方向:CDMA移动通信技术。