On Time-of-Arrival Estimation in Dense Ultra-Wideband Channels

摘要：

We derive a pilot-assisted maximum likelihoo (ML) timing estimator for ultra-wideband radio systems for the realistic scenario in which the received pulse shape and the channel are unknown. We compare the performance of the ML timing estimator to the Cramer-Rao bound and to sub-optimal methods such as the dirty-template method and a delay-correlate timing estimator for transmitted reference systems, both of which do not require knowledge of the channel and received pulse shape. The performance results indicate that, at medium-to-high signal-to-noise ratios, the ML estimator significantly outperforms the sub-optimal schemes, especially in non-line-of-sight channels.

作者: Sandeep R.Aedudodla Tan F.Wong

作者单位: Wireless Information Networking Group University of Florida Gainesville, Florida 32611-6130, USA

会议类型: 国际会议

会议名称: 2006 International Conference on Communications,Circuits and Systems(第四届国际通信、电路与系统学术会议)

会议地点: 广西桂林

会议语种:英文

页码: 1315-1320

在线出版日期: 2006-06-25（万方平台首次上网日期，不代表论文的发表时间）