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Pseudo-random Aloha for inter-frame soft combining in RFID systems

Authors :
Petar Popovski
Fabio Ricciato
Paolo Castiglione
P., Castiglione
Ricciato, Fabio
P., Popovski
Source :
Castiglione, P, Ricciato, F & Popovski, P 2013, Pseudo-random Aloha for inter-frame soft combining in RFID systems . in IEEE 2013 18th International Conference on Digital Signal Processing . IEEE, International Conference on Digital Signal Processing proceedings, pp. 1-6, International conference on Digital Signal Processing, Fira, Greece, 01/07/2013 . https://doi.org/10.1109/ICDSP.2013.6622746, DSP
Publication Year :
2013
Publisher :
IEEE, 2013.

Abstract

In this work we consider a recently proposed variant of the classical Framed Slotted-ALOHA where slot selection is based on a pseudo-random function of the message to be transmitted and of the frame index. We couple this feature with convolutional encoding, that allows to perform Inter-frame Soft Combining (ISoC) of multiple (re)transmission attempts of the same payload across different frames. The ISoC scheme, proposed here for the first time, requires less memory usage and computational complexity at the receiver digital signal processor compared to existing techniques based on inter-frame signal cancellation (instead of combining). Numerical simulation results show that the ISoC scheme brings a noticeable throughput gain over traditional schemes in a dense RFID scenario with multiple concurrent Tag transmissions.

Details

Language :
English
Database :
OpenAIRE
Journal :
Castiglione, P, Ricciato, F & Popovski, P 2013, Pseudo-random Aloha for inter-frame soft combining in RFID systems . in IEEE 2013 18th International Conference on Digital Signal Processing . IEEE, International Conference on Digital Signal Processing proceedings, pp. 1-6, International conference on Digital Signal Processing, Fira, Greece, 01/07/2013 . https://doi.org/10.1109/ICDSP.2013.6622746, DSP
Accession number :
edsair.doi.dedup.....902c84ca7f5b70d61728489cc23893b0
Full Text :
https://doi.org/10.1109/ICDSP.2013.6622746