Nonparametric TOA estimators for low-resolution IR-UWB digital receiver  

作　　者：Yanlong Zhang Weidong Chen 

机构地区：[1]School of Electrical Science and Engineering, University of Science and Technology of China

出　　处：《Journal of Systems Engineering and Electronics》2015年第1期26-31,共6页系统工程与电子技术（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(863 Program)(2009AA011204)

摘　　要：Nonparametric time-of-arrival（TOA） estimators for impulse radio ultra-wideband（IR-UWB） signals are proposed. Nonparametric detection is obviously useful in situations where detailed information about the statistics of the noise is unavailable or not accurate. Such TOA estimators are obtained based on conditional statistical tests with only a symmetry distribution assumption on the noise probability density function. The nonparametric estimators are attractive choices for low-resolution IR-UWB digital receivers which can be implemented by fast comparators or high sampling rate low resolution analog-to-digital converters（ADCs）,in place of high sampling rate high resolution ADCs which may not be available in practice. Simulation results demonstrate that nonparametric TOA estimators provide more effective and robust performance than typical energy detection（ED） based estimators.Nonparametric time-of-arrival（TOA） estimators for impulse radio ultra-wideband（IR-UWB） signals are proposed. Nonparametric detection is obviously useful in situations where detailed information about the statistics of the noise is unavailable or not accurate. Such TOA estimators are obtained based on conditional statistical tests with only a symmetry distribution assumption on the noise probability density function. The nonparametric estimators are attractive choices for low-resolution IR-UWB digital receivers which can be implemented by fast comparators or high sampling rate low resolution analog-to-digital converters（ADCs）,in place of high sampling rate high resolution ADCs which may not be available in practice. Simulation results demonstrate that nonparametric TOA estimators provide more effective and robust performance than typical energy detection（ED） based estimators.

关 键 词：conditional test nonparametric estimator time-of-arrival（TOA） low-resolution 

分 类 号：TN851[电子电信—信息与通信工程]