摘要
为得到适于OFDM-UWB系统的信道估计方法,通过分析线性插值、高斯插值和DFT时域补零插值法来获得完整信道响应的估计,得到最小的均方误差。仿真结果表明,对于UWB室内信道中的CM1和CM4两种信道模型,在低信噪比时可以采用复杂度较低的线性插值算法,在高信噪比时可以采用DFT时域补零插值算法。
In order to get the suitable channel estimation for OFDM-UWB system,the linear interpolation,Gauss interpolation and DFT time-domain zero-padding interpolation method are analyzed to get the full channel responses with the minimum mean square error.Simulation results show that for channel CM1 and CM4,the linear interpolation method of low complexity can be adopted in low SNR,and the DFT method can be adopted in high SNR.
出处
《西安邮电学院学报》
2010年第5期1-4,共4页
Journal of Xi'an Institute of Posts and Telecommunications
基金
陕西省教育厅专项科研计划资助项目(09JK730)
