基于级联预编码的蜂窝下行机会干扰对齐  

Cellular downlink opportunistic interference alignment based on cascaded precoding

作　　者：叶宗刚 李兆玉[1] 赵迎芝 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《计算机应用研究》2017年第3期835-837,845,共4页Application Research of Computers

基　　金：长江学者和创新团队发展计划资助项目(IRT1299);重庆市科委项目(CSTC2012jj A40044;CSTC2013yykf A40010);重庆市科委重点实验室专项经费资助项目;重庆邮电大学自然科学基金资助项目(A2011-51)

摘　　要：针对多天线蜂窝网络下行干扰信道,利用级联预编码思想和以干扰对齐为用户调度准则的随机波束赋形方法,提出了一种机会式干扰对齐算法。在基站与被选中用户的下行链路中,双层预编码的设计可以同时处理小区内和小区间干扰。与普通的随机波束赋形算法相比,方法使得系统具有更大和容量且有更高的能量效率,仿真验证了算法的优越性。Aiming at MIMO cellular interfering broadcast channel,using the cascaded precoding and random beam-forming that based on interference alignment user scheduling rules,this paper proposed an opportunist interference alignment algorithm. The cascaded precoding could respectively process the interference that comes from intra-cell and inter-cell in the downlink network between base station and the chosen user. Meanwhile the proposed method significantly outperformed the classic random beam-forming in terms of sum capacity of system and average energy efficiency. The simulation results verify the effectiveness of the proposed method.

关 键 词：蜂窝网络 多输入多输出 下行链路 级联预编码 机会干扰对齐 

分 类 号：TN911.2[电子电信—通信与信息系统]