基于信道缩短的超宽带信道盲估计方法  

Blind Channel Estimation for UWB Systems Based on Channel Shortening

作　　者：田来[1] 刘郁林[1] 殷振华[1] 

机构地区：[1]重庆通信学院,重庆400035

出　　处：《通信技术》2008年第8期101-103,共3页Communications Technology

摘　　要：在基于一阶统计量解圆周卷积的超宽带信道盲估计方法中,存在着要求信道长度必须小于符号周期长度的局限性。使用信道缩短技术,对实际信道的长度进行缩短,估计出缩短信道后再恢复成实际的超宽带信道,有效地解决了这个问题。仿真实验表明,在信道长度大于符号周期长度时,仍然能很好地估计出信道。In the blind channel estimation algorithm which exploits the first-order cyclostationarity in the received signal and performs circular deconvolution for Ultra Wide-Band （UWB） systems, there exists a limitation that the duration of the channel must be less than the symbol duration. The problem could be effectively solved by using the channel shortening technique and compressing the length of the combined channel. As the combined channel is estimated, the actual UWBchannel would be recovered. Simulation results demonstrates that the channel could be well estimated even when the duration of the channel is larger than the symbol duration.

关 键 词：道缩短 超宽带 信道盲估计 

分 类 号：TN911.5[电子电信—通信与信息系统]