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IEEEUWB的CM1和CM4模型.系统仿真实验结果表明,该文基于矩阵特性的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.
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.