Invention Grant
- Patent Title: Detecting earliest channel path in location tracking systems
- Patent Title (中): 在位置跟踪系统中检测最早的通道路径
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Application No.: US13966079Application Date: 2013-08-13
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Publication No.: US09084087B2Publication Date: 2015-07-14
- Inventor: Siavash Ekbatani , Alok Kumar Gupta , Yih-Hao Lin
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- Main IPC: H04W4/04
- IPC: H04W4/04 ; H04B1/7163 ; G01S5/02 ; G01S11/08 ; G01S5/14

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.
Public/Granted literature
- US20150050944A1 DETECTING EARLIEST CHANNEL PATH IN LOCATION TRACKING SYSTEMS Public/Granted day:2015-02-19
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