标题：Layered channel estimation for high data rate DS-UWB
作者：Li, Zhi Yong ;Meng, Xiang Lu ;Dong, Kai ;Yan, Shuai ;Wang, De Qiang
作者机构：[Li, Zhi Yong ;Meng, Xiang Lu ;Dong, Kai ;Yan, Shuai ;Wang, De Qiang ] School of Information Science and Engineering, Shandong University, Jinan 25010 更多
会议名称：2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014
会议日期：20 May 2014 through 21 May 2014
来源：Advanced Materials Research
关键词：Channel estimation; Mean square error; Ultra-wideband
摘要：In this paper, a layered channel estimation method is proposed for DS-UWB systems, where both ISI and IPI are taken into consideration. The multipath components are classified into layers with respect to their time delays and estimated layer-by-layer iteratively. In each layer, the ISI and IPI are mitigated by using the inherent characteristics of bipolar symbols and prior knowledge of the spreading code sequence and pilot symbols. A detection-directed refinement procedure is used to improve the estimation accuracy further. Simulation results show that the proposed scheme can be used to gain precise channel state information. © (2014) Trans Tech Publications, Switzerland.