...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Science Letters >Intercell Interference Management for 4G Cellular Networks with Macro- and Femtocell Coexistence
【24h】

Intercell Interference Management for 4G Cellular Networks with Macro- and Femtocell Coexistence

机译：具有宏蜂窝和毫微微小区共存的4G蜂窝网络的小区间干扰管理

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

To meet high data-rate target and obtain best use of the valuable spectrum, the forthcoming cellular systems are designed to support universal frequency reuse (UFR) and deploy femtocells. However, actual implementations of UFR in cellular systems lead to unacceptable interference levels at cell-edge area. Inter-cell interference coordination (ICIC) is one of the key techniques to manage and mitigate the inter-cell interference (ICI) for the forthcoming wireless broadband systems. In this paper, three ICIC schemes for two-tier cellular networks are presented; the reuse-3, soft frequency reuse (SFR) and partial frequency reuse (PFR). The first scheme is much simpler than the last two schemes, which demand location information of each mobile user to carry out the power control and frequency allocation. Simulation results show that the deployment of femtocells not only significantly reduces the blocking rate, but greatly increases the system capacity and draws in the performance gap between cell center and cell-edge users. It is also found that as the femtocells are deployed, the capacity of the reuse-3 method becomes comparable with the other two schemes (SFR and PFR). This indicates the usability of the simple reuse-3 method under the femtocell deployment without demanding the location information of mobile users which is much expensive to implement especially for smaller cells and high mobility users.
机译：为了满足高数据速率目标并充分利用有价值的频谱，即将推出的蜂窝系统旨在支持通用频率复用（UFR）和部署毫微微小区。但是，在蜂窝系统中UFR的实际实现会导致在蜂窝边缘区域产生不可接受的干扰水平。小区间干扰协调（ICIC）是管理和减轻即将到来的无线宽带系统的小区间干扰（ICI）的关键技术之一。本文提出了用于两层蜂窝网络的三种ICIC方案。重用3，软频率重用（SFR）和部分频率重用（PFR）。第一种方案比后两种方案简单得多，后者需要每个移动用户的位置信息来执行功率控制和频率分配。仿真结果表明，毫微微小区的部署不仅显着降低了阻塞率，而且极大地增加了系统容量，并在小区中心和小区边缘用户之间造成了性能差距。还发现随着毫微微小区的部署，reuse-3方法的容量变得可与其他两种方案（SFR和PFR）相媲美。这表明在毫微微小区部署下简单重用3方法的可用性，而不要求移动用户的位置信息，这对于实施特别是对于较小的小区和高移动性用户而言是非常昂贵的。

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