Hi,
I’m trying to receive a signal from a ISO14443 compliant rfid tag. I
have a
USRP N210 + gnuradio running and I issue
commands (just the anticollision loop) via a ACS ACR122U reader to a
faked
german ID card (fake like “offical fake by Bundesdruckerei”).
As I’m a computer scientist and not that much into signal processing I
googled around and found: http://web.mit.edu/zacka/www/mbta.html
About half way down the page I saw their toolchain and tried to
implement a
receiver at 12.71 MHz for one of the subcarriers.
Within the spectrum I can see that there is a signal but after
demodulation
I can not see a thing in the scope plot.
Would someone be able to share a simple receiver with me so that I can
learn from that? I would really appreciate that.
Best regards