公开(公告)号：US20150050944A1

公开(公告)日：2015-02-19

申请号：US13966079

申请日：2013-08-13

Applicant: QUALCOMM Incorporated

Inventor： Siavash EKBATANI ,  Alok Kumar GUPTA ,  Yih-Hao LIN

IPC: H04W4/04

CPC classification number: H04W4/04 ,  G01S5/0215 ,  G01S5/0221 ,  G01S5/14 ,  G01S11/08 ,  H04B1/7163

Abstract: Methods, systems, and devices for detecting earliest channel path and/or determining time of arrival of signals in location tracking systems are described. An ultra-wideband (UWB) signal may be received from a tag. A noise estimation level above which the UWB signal is detectable may be determined using a noise estimation metric. A channel impulse response (IR) energy level may be determined using a channel energy metric. A leading edge window of the UWB signal may be identified. The leading edge window may be based on, at least in part, the noise estimation level and the channel IR energy level.

Abstract translation: 描述了用于检测最早通道路径和/或确定位置跟踪系统中的信号到达时间的方法，系统和设备。 可以从标签接收超宽带（UWB）信号。 可以使用噪声估计度量来确定高于该噪声估计水平的UWB信号是可检测的。 可以使用信道能量度量来确定信道脉冲响应（IR）能级。 可以识别UWB信号的前沿窗口。 前沿窗口可以至少部分地基于噪声估计水平和信道IR能量水平。