公开(公告)号：US20190104003A1

公开(公告)日：2019-04-04

申请号：US15719687

申请日：2017-09-29

Applicant: NXP B.V.

Inventor： Ulrich Andreas Muehlmann ,  Ulrich NEFFE

IPC: H04L27/22 ,  G06K7/10

CPC classification number: H04L27/22 ,  G06K7/10019 ,  G06K7/10029 ,  H04B5/0062

Abstract: Various embodiments relate to a method for classifying received radio frequency signals, including: receiving an input signal; matched filtering the input signal to produce a correlation result signal; sampling the correlation result signal at a plurality of half-bit-grids and a plurality of bit-grids to produce a set of modulated phase correlation result samples and a set of non-modulated phase correlation result samples; calculating a minimum of the set of modulated phase correlation result samples; calculating a maximum of the set of non-modulated phase correlation result samples; and classifying the input signal as valid data or collision data based on the minimum and the maximum.