期刊文献+

基于时分复用的LTE系统干扰协调算法

Interference coordination based on time reuse for LTE systems
下载PDF
导出
摘要 在多小区间的OFDMA网络中,用户分配和负载随时间变化不断变化,会导致严重的小区间干扰。为解决此问题,文中提出了一种新的资源划分方法:时域资源划分。此划分方案可以使用户在整个频域上调度最好的资源块,并且不用考虑小区边缘用户分布不均,避免频率资源的二次调整,节省了信令开销。这种时域资源划分方案与传统的公平比例调度算法有效的结合在一起,可以有效地提高系统的吞吐量。理论和仿真分析表明,所提的方案与传统的频域划分相比,使小区边缘用户的吞吐量以及多用户分集的效果得到了提高。 In the multi-cell OFDMA networks, the user distribution and load changes with time, which can cause serious inter-cell interference. In order to solve this problem, a new kind of resource partitio- ning schemes is presented: time-domain resource partitioning. The scheme allows users to schedule the best resource blocks across the frequency domain, and avoid secondary frequency resource adjustment problems without considering the cell edge user distribution, so it can save the signaling overload. The time-domain resource partitioning scheme combined with the conventional proportional fair scheduling al- gorithm can effectively improve the throughput of the systems. Simulation results show that compared with the conventional frequency domain scheme, the time-domain resource partitioning scheme can improve cell-edge user performance and multi-user diversity effects.
出处 《南京邮电大学学报(自然科学版)》 北大核心 2015年第2期84-90,共7页 Journal of Nanjing University of Posts and Telecommunications:Natural Science Edition
基金 国家自然科学基金(61372125 61401234) 江苏省科技支撑计划(工业)项目(BE2013019) 南京邮电大学宽带无线通信与传感网技术教育部重点实验室开放研究基金资助课题(NYKL201108) 江苏高校优势学科建设工程资助项目(信息与通信工程)资助项目
关键词 LTE 干扰协调 EFTR LTE interference coordination EFTR
  • 相关文献

参考文献18

  • 1ZHANG Guangrong,ZHANG Chao,ZHANG Jun,et al. Anovel uplink interference coordination scheme using highinterference indicator [ C ] // Vehicular Technology Confer-ence. 2010(72) : 1 -5. 被引量:1
  • 2BOUDERAU G’PANICKER J,GUO N,et al. Interferencecoordination and cancellation for 4G networks [ J]. IEEECommunications Magazine,2009,47(4) :74 -81. 被引量:1
  • 3SESIA S,TOUFIK I,BAKER M. LTE-The UMTS longterm evolution : From theory to practice [ M ] . Torquay :Wiley Publishing,2009. 被引量:1
  • 4QIAN Manli,HARDJAWANA W,LI Yonghui,et al. Inter-cell interference coordination through adaptive soft frequen-cy reuse in LTE networks[C] //IEEE Wireless Communi-cations and Networking Conference ( WCNC ). 2012 :1618 -1623. 被引量:1
  • 5马富樱,王喆,张日芳,李红霞.LTE系统的小区间干扰协调分析[J].数据通信,2010(5):15-17. 被引量:7
  • 6沈嘉.OFDM系统的小区间干扰抑制技术研究[J].电信科学,2006,22(7):10-13. 被引量:19
  • 7郑侃.宽带OFDM系统的干扰协调技术[J].现代电信科技,2007(6):13-17. 被引量:10
  • 8RENGARAJAN B,STOLYAR A,VISWANANTHAN H. Asemi-autonomous algorithm for selforganizing dynamic frac-tional frequency reuse on the uplink of OFDMA systems[C] //Wireless Conference 2005—Next Generation Wire-less and Mobile Communications and Services ( EuropeanWireless) . 2005. 被引量:1
  • 93GPP. R1-050507# Soft Frequency Reuse Scheme forUTRAN LTE[S]. 2005. 被引量:1
  • 10ZHU Chen, TANG Yuliang. Traffic-aware dynamic fre-quency band allocation scheme for OFDMA system [ J].IEEE Communications Letters, 2013,17 (8): 1604 -1607. 被引量:1

二级参考文献44

共引文献35

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部