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应用科学学报 ›› 2007, Vol. 25 ›› Issue (6): 570-570 .

• 论文 • 上一篇    下一篇

UWB-OFDM系统中基于矩阵特性的ICI消除

齐丽娜 干宗良 朱洪波   

  1. 南京邮电大学 通信与信息工程学院，江苏 南京210003
  • 收稿日期:2006-12-07 修回日期:2007-07-18 出版日期:2007-11-30 发布日期:2007-11-30

ICI Cancellation in UWB-OFDM Systems Based on ICI Matrix Properties

QI Li-na, GAN Zong-liang, ZHU Hong-bo   

  1. College of Telecommunications＆Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China
  • Received:2006-12-07 Revised:2007-07-18 Online:2007-11-30 Published:2007-11-30

被引次数

1

摘要： 对UWB-OFDM系统ICI消除算法进行研究，首先分析了系统ICI的产生机理，在此基础上，提出一种基于矩阵特性的ICI消除的快速算法。信道模型采用IEEE UWB的CM1和CM4模型，系统仿真实验结果表明，本文基于矩阵特性的ICI消除快速算法在不同的超宽带室内信道环境以及不同的归一化频率偏移情况下均具有较好的性能，同时算法计算复杂度较低。

关键词: 超宽带-正交频分复用（UWB-OFDM）, 子载波干扰（ICI）, 时变多径信道, 均衡

Abstract: This paper studies the cancellation methods of ICI in UWB-OFDM systems. The mechanism of ICI is analyzed. A novel method of ICI cancellation based on ICI matrix properties is then proposed. Simulation results based on IEEE UWB channel models CM1 and CM4 show that, with the proposed ICI cancellation method, complexity of calculation can effectively be reduced with better performance over different UWB indoor channel environments and normalized different frequency shifts.

Key words:

ultra-wideband OFDM (UWB-OFDM), inter-carrier interference (ICI), variant multipath channel, equalization