一种基于干扰对齐的多跳网络吞吐量优化模型  

Interference Alignment Based Throughput Optimization Model of Multi-hop Networks

作　　者：熊最[1] 王可人[1] 金虎[1] 冯辉[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《系统仿真学报》2015年第6期1240-1246,共7页Journal of System Simulation

摘　　要：干扰对齐(Interference Alignment,IA)由于从信息论的角度提升了系统的频谱利用率,很快被应用到多跳网络中。针对现有基于IA的吞吐量优化模型中存在节点状态约束不充分和于扰对齐可行性缺乏约束的问题,通过对二组会话的节点路径建立分解模型,推导给出了任意会话条件下的节点时间纵向约束条件和于扰对齐可行性约束条件。仿真实验表明,加入节点状态纵向约束条件和干扰对齐可行性约束后,优化模型的可行域得到有效收缩,干扰对齐可行性得到了保证。Due to its benefits of enhancing the spectrum utility in information theory,interference alignment(IA) is quickly adopted in multi-hop wireless networks.The constraints of node activity in the existing throughput optimization model with IA are insufficient for converging to the optimal solution;the feasibility of IA is not involved.Thus,some measures were taken to compensate for the problems above.The longitudinal constraints of node activity were presented,and the feasibility condition of IA was discussed by the means of setting constraints on the data rates and the maximal number of interfering links at each node.The simulation results demonstrate that the feasible region of the modified optimization mode would be contracted with the longitudinal constraints.Meanwhile,IA feasibility would be guaranteed.

关 键 词：多跳网络 干扰对齐 混合整数规划 吞吐量优化 

分 类 号：TN911.4[电子电信—通信与信息系统]