首页> 外文会议>2017 Wireless Days >Weighted rank constrained rank minimization interference alignment for 3-tier downlink heterogeneous networks
【24h】

Weighted rank constrained rank minimization interference alignment for 3-tier downlink heterogeneous networks

机译:3层下行链路异构网络的加权秩约束秩最小干扰对齐

获取原文
获取原文并翻译 | 示例

摘要

In this paper, interference alignment (IA) in 3-tier heterogeneous networks (HetNets) is addressed. The rank constrained rank minimization (RCRM) approach is modified to deal with the nature of tiers with different quality-of-service (QoS) requirements. In the proposed approach, which we name weighted RCRM (WRCRM), different tiers are treated with different weighting factors to reflect their tolerance to interference. We first study the achievable degrees of freedom (DoFs) for the 3-user mutually interfering broadcast channels (MIBCs) and derive an inner and a loose outer bound on the achievable DoFs. Then, using the derived expressions and the condition of IA feasibility, we show that, by choosing the appropriate weighting factors, the proposed WRCRM-IA solution can outperform the RCRM-IA approach in terms of the average sum rate and the average number of DoFs. Moreover, the WRCRM-IA solution comes closer to the perfect IA DoFs outer bound.
机译:在本文中,解决了三层异构网络(HetNets)中的干扰对准(IA)。修改了等级约束等级最小化(RCRM)方法,以处理具有不同服务质量(QoS)要求的层的性质。在我们称为加权RCRM(WRCRM)的提议方法中,使用不同的加权因子来对待不同的层,以反映其对干扰的容忍度。我们首先研究三用户相互干扰广播信道(MIBC)的可实现的自由度(DoF),并得出可实现的DoF的内部和外部宽松边界。然后,使用推导的表达式和IA可行性的条件,我们表明,通过选择适当的加权因子,提出的WRCRM-IA解决方案在平均总和率和DoF的平均数量方面可以胜过RCRM-IA方法。 。此外,WRCRM-IA解决方案更接近完美的IA DoF的外部界限。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号