Sources of ToA Estimation Error in LoS Scenario
Time-of-arrival (ToA) estimation technique used with ultra-wideband (UWB) transmission can be used for accurate indoor ranging. In the indoor multipath rich environment, these techniques often suffer from significant inaccuracy in ranging estimation. It is generally believed that the main cause of the ToA estimation error in the Line-of-sight (LoS) scenario is noise, usually modeled as white Gaussian noise. Through the established analytical framework for the analysis of the ToA estimation error, it is argued in this paper that the ToA estimation errors are caused by multipath interference and the fading statistics of the direct path. Therefore, variance of fading statistics of the direct path are considered on top of the noise variance for better prediction of the ToA estimation error. A comparison of predicted error with those obtained based on experimental measurements in an indoor environment confirms the validity of our analytical approach.
Marzieh Dashti Mir Ghoraishi Katsuyuki Haneda Jun-ichi Takada
Department of International Development Engineering, Tokyo Institute of Technology, Japan Aalto Univ Department of International Development Engineering, Tokyo Institute of Technology, Japan Aalto University School of Science and Technology, Finland
国际会议
南京
英文
1-4
2010-09-20（万方平台首次上网日期，不代表论文的发表时间）