多小区环境中基于动态功率分配的干扰安排算法  

Research on Interference Alignment Based on Dynamic Power Allocation in Multi-Cell

作　　者：周志栋[1] 谢显中[1] 邵奇[1] 

机构地区：[1]重庆邮电大学宽带接入网络研究所,重庆400065

出　　处：《吉林大学学报（信息科学版）》2011年第6期504-510,共7页Journal of Jilin University（Information Science Edition）

基　　金：国家自然科学基金资助项目(60872037);重庆市自然科学基金资助项目(CSTC2010BB2415;CSTC2011JJA40006);重庆市教委科学研究计划基金资助项目(KJ080508)

摘　　要：在多用户MIMO(Multiple-Input Multiple-Out put)干扰信道环境中,为了充分利用系统的总功率,将用户受到的干扰最大化地重叠,以提高系统性能。给出了MIMO干扰信道模型及子空间干扰安排算法分析;针对如何最大程度地利用系统功率问题提出了一种采用动态功率分配的干扰安排算法。仿真结果显示,该方案仅牺牲微小的系统容量,却显著地降低了系统的平均误码率和干扰功率,证明该算法较给定功率算法更有优势。In multi-user MIMO （Multiple-Input Multiple-Out put） interterence channel envlronment, m oraer to fully utilize the system＇s total power, disruption to the user to maximize overlapping, thereby improving system performance. The MIMO interference channel model and interference subspace scheduling algorithm analysis are given ; to maximize the use of system power, a dynamic power allocation algorithm for interference arrangement is presented. Simulation results show that the program is only at a small expense of system capacity, but significant- ly reduces the system＇s average error rate and interference power, to prove that the algorithm is better than the al- gorithm given the power advantage.

关 键 词：干扰安排/对齐 MIMO干扰信道 动态功率分配 多小区 

分 类 号：TN92[电子电信—通信与信息系统]