北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (2): 46-49.doi: 10.13190/jbupt.200802.46.xufm

• 论文 • 上一篇    下一篇

支持广义MIMO技术的软分数频率复用方法

许方敏1,2,陶小峰1,2,王莹1,2,张平1,2   

  1. 1. 北京邮电大学 泛网无线通信教育部重点实验室, 北京 100876; 2.北京邮电大学 无线新技术研究所, 北京 100876
  • 收稿日期:2007-07-13 修回日期:1900-01-01 出版日期:2008-04-28 发布日期:2008-04-28
  • 通讯作者: 许方敏

A Fractional Frequency Reuse Scheme Supporting Generalized MIMO Technique

XU Fang-min1,2, TAO Xiao-feng1,2,WANG Ying1,2, ZHANG Ping1,2   

  1. 1.Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2.Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2007-07-13 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
  • Contact: XU Fang-min

摘要:

为了提高小区边缘用户(CEU)性能,提出了一种新型软分数频率复用(SFFR)方法。与以往频率复用方法不同的是,区域和频率的规划使多个小区联合多个CEU形成广义多输入多输出(MIMO)系统,在小区边缘可支持共信道空间分集和空间复用。另一方面,利用SFFR思想的频率规划通过干扰协同提高了频谱效率和CEU信干比。CEU信干比提高后,与采用空间分集相比采用空间复用将更有利于提高CEU性能;因此,为了更大程度上优化系统吞吐量,在小区边缘,对下行多用户进行广义MIMO的空间复用;而小区中心用户仍然由单个小区为其提供服务。仿真结果表明,这种支持广义MIMO技术的新型SFFR方法显著地提高了CEU性能。

关键词: 第四代移动通信系统, 小区边缘用户性能;软分数频率复用, 广义多输入多输出

Abstract:

To improve cell-edge user (CEU) performance, a new soft fractional frequency reuse(SFFR) scheme is introduced. Unlike other frequency reuse schemes, it supports space diversity and space multiplexing because multi-cell and multi-CEU form a generalized multi-input multi-output (MIMO) system. On the other hand, CEU performance is improved by interference coordination through frequency programming based on soft fractional frequency reuse. It provides a good chance to use space multiplexing than space diversity. For getting a further performance, space multiplexing is adopted. In the meantime, cell-center users are still served by one cell. Simulation results show that the novel fractional frequency reuse scheme can support generalized MIMO technique and improve CEU performance significantly.

Key words: the 4th generation (4G) mobile communication systems, cell-edge user performance;soft fractional frequency reuse, generalized multi-input multi-output

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