[Discuss-gnuradio] Rfid 866MHz and PR-ASK modulation
From:
Thom L
Subject:
[Discuss-gnuradio] Rfid 866MHz and PR-ASK modulation
Date:
Mon, 5 Mar 2018 21:17:00 +0100
Hello,
First, I want to thank you for the quality of this list. The skill and kindness of the participants is just exceptional.
Well,
my problem is the following one. Not really a GNU radio problem but rather a theoretical problem...
I work on a project concerning the
RFID 866 MHz. Using usrp B210 real
part and magnitude of the signal centered on 866MHz corresponds perfectly with documentation EPCglobalGen2:
It seems to be a modulation Phase Reverse Amplitude Shift Keying
(PR-ASK). I can't understand how in annex H (p143 of the
documentation) the modulated waveform is obtained from baseband signal...
I can understand and decode signal but this little thing has disturbed me for too long ... Everything is summarized on attached file. What I don't understand is indicated by interrogation marks.