Layered Channel Estimation for High Data Rate DS-UWB

• DOI: 10.4028/www.scientific.net/amr.926-930.1966
• Publication Date: 2014-05-23T14:53:38Z
• Authors: Zhi Yong Li; Xiang Lu Meng; Kai Dong; Shuai Yan; De Qiang Wang
• Keywords: 0508 media and communications; 05 social sciences

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.