Title :
Advanced Collision Recovery Receiver for RFID
Author :
Kaitovic, Jelena ; Langwieser, Robert ; Rupp, Markus
Author_Institution :
Inst. of Telecommun., Vienna Univ. of Technol., Vienna, Austria
Abstract :
In this paper, we focus on a substantial throughput increase of a Radio Frequency Identification (RFID) multiantenna system. We investigate the influence of the channel estimation and the receiver structure on the theoretical throughput of Framed Slotted Aloha (FSA) based RFID systems. We propose an increase of the theoretical throughput by resolving collisions and acknowledging more than one tag per slot. Furthermore, in order to profit of such increase, we suggest a collision recovery method through successive interference cancellation and projection of the constellation into the orthogonal subspace of the interference. The performance of the proposed method is analysed by means of simulations.
Keywords :
access protocols; channel estimation; interference suppression; radio receivers; radiofrequency identification; FSA; RFID multiantenna system; advanced collision recovery receiver; channel estimation; collision recovery method; framed slotted ALOHA based RFID systems; orthogonal subspace; radiofrequency identification multiantenna system; successive interference cancellation; Channel estimation; Color; Radiofrequency identification; Receiving antennas; Throughput; Vectors; Channel Estimation; Collision Recovery; Framed Slotted Aloha; Radio Frequency Identification (RFID);
Conference_Titel :
RFID Technology (EURASIP RFID), 2012 Fourth International EURASIP Workshop on
Conference_Location :
Torino
Print_ISBN :
978-1-4673-2602-5
DOI :
10.1109/RFID.2012.25
