...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>電子情報通信学会技術研究報告. 無線通信システム. Radio Communication Systems >A Study on Downlink Interference Mitigation Based on Interference Alignment for Coexisting MIMO Femtocell and Macrocell Networks affected by Heterogeneous Pathloss and Shadowing
【24h】

A Study on Downlink Interference Mitigation Based on Interference Alignment for Coexisting MIMO Femtocell and Macrocell Networks affected by Heterogeneous Pathloss and Shadowing

机译：受干扰路径和阴影影响的MIMO Femtocell和Macrocell网络共存的基于干扰对准的下行链路干扰缓解研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper considers downlink interference mitigation for two-tier cellular systems using Interference Alignment (LA). In order to manage both the co-tier and cross-tier interference in MIMO femtocell and macrocell networks, we have proposed modeling such networks as an overlay cognitive radio network in which the macrocell tier plays the role of primary user and the femtocell tier acts as the secondary user/users. The proposed framework is composed of cooperation between the two tiers by using the Restricted Water-Filling (RWF) algorithm where the PU can release some of its weakest eigenmodes to be used by the SUs. Such cooperation helps the MBS to offload some of its load to be served by the associated FBSs, meanwhile, the FBSs are now able to increase their downlink sum rates through aligning both the co-tier and cross tier interference at its users' receivers. In this paper, we extend the proposed framework to cases affected by heterogeneous path loss and shadowing. The simulation results prove the superiority of our proposed interference mitigation framework compared to the legacy interference alignment approaches in various environments.
机译：本文考虑了使用干扰对准（LA）的两层蜂窝系统的下行链路干扰缓解。为了同时管理MIMO毫微微小区和宏小区网络中的共层和跨层干扰，我们提出了将此类网络建模为覆盖认知无线电网络的方法，其中宏小区层扮演主要用户的角色，而毫微微小区层充当次要用户。所提出的框架是通过使用受限注水（RWF）算法由两层之间的协作组成的，其中PU可以释放一些最弱的本征模式以供SU使用。这样的合作帮助MBS减轻了由相关FBS承担的部分负载，同时，FBS现在能够通过在用户接收器处调整共层和跨层干扰来提高其下行链路总速率。在本文中，我们将提出的框架扩展到受异构路径损耗和阴影影响的情况。仿真结果证明，与各种环境下的传统干扰对准方法相比，我们提出的干扰缓解框架具有优越性。

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