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J. Kaitovic, R. Langwieser, M. Rupp:
"RFID Reader with Multi Antenna Physical Layer Collision Recovery Receivers";
Poster: IEEE International Conference on RFID-Technologies and Applications (RFID-TA), Sitges, Spain; 09-15-2011 - 09-16-2011; in: "2011 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)", (2011), ISBN: 978-1-4577-0026-2; 4 pages.

Radio Frequency Identification (RFID) is a wireless
identification technology which often operates in environments
with multiple RFID tags. Already introduced multiple antenna
receivers can recover from a collision of up to M tags as long as
M is less than the number of receive antennas and the channel
is known at the receiver. This paper proposes a Zero-Forcing
(ZF) and a Minimum Mean Square Error (MMSE) receiver
which allows the separation of up to M=2NR tags, where NR
is the number of receiving antennas on the reader. The proposed
algorithms are verified through simulations.

Project Head Christoph Mecklenbräuker:
Christian Doppler Lab "Funktechnologien für nachhaltige Mobilität"