基于LTE-A中继网的自适应功率分配策略  

An Adaptive Power Allocation Strategy Based on LTE-A Relay Network

作　　者：李校林[1,2] 刘冰华[1] 

机构地区：[1]重庆邮电大学通信新技术应用研究中心 [2]重庆信科设计有限公司,重庆400065

出　　处：《河南师范大学学报（自然科学版）》2015年第1期44-48,共5页Journal of Henan Normal University(Natural Science Edition)

基　　金：重庆市自然科学基金(CSTC2012jjA40054)

摘　　要：中继作为Long Term Evolution Advanced(LTE-A)关键技术之一,主要作用是扩大小区覆盖面积和提高系统吞吐量,但是2跳速率匹配成为中继网中提高资源利用率的关键问题.针对该问题,提出一种基于LTE-A中继网的自适应功率分配策略.此策略分别以最大化用户速率和最小化系统发射功率为目标,根据第1跳和第2跳的实际速率的大小,自适应的调节子载波上的传输功率.仿真结果表明,和传统的资源分配算法相比,此自适应功率分配策略有效提高了系统的整体性能.Relay as one of the key technologies of LTE-A, the main role is to expand the coverage and improve the throughput of the system, but the two-hop rate matching become a key issue to improve the resource utilization rate in the relay network. Aiming at this problem, this paper puts forward an adaptive power allocation strategy which based on LTE-A relay network. The goals of the strategy are to maximize user rate and minimize the transmission power of the system, adjust the transmission power of the subcarriers according to the actual rate of the first and second hop. The simulation results show that, compared with the traditional resource allocation algorithm, the adaptive power allocation strategy proposed in this paper can effectively improve the overall performance of the system.

关 键 词：LTE-A中继网 功率分配 自适应 2跳 

分 类 号：TN929.5[电子电信—通信与信息系统]