RFID Reader Receivers for Physical Layer Collision Recovery

Angerer, Christoph; Langwieser, Robert; Rupp, Markus

doi:10.1109/tcomm.2010.101910.100004

Cited by 152 publications

(103 citation statements)

References 23 publications

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“…We evaluate the system efficiency, average coordination time for one tag identification and identification rate (the number of tags identified per second), and compare its performance with existing methods including Maximum a posteriori estimation (MAP) [3], FEIA [10], ILCM [11], and Q-algorithm [9] over extensive Monte Carlo simulations. According to the EPC C1 Gen2 specification, the primary time parameters are listed in Tab.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…However, along with the increasing number of tags, the position of collision bit cannot be detected efficiently since the wide deviation of received signals [8][9] at a reader in UHF RFID system. Therefore, it is difficult to implement QT-based algorithms or hybrid algorithms which adopt bit tracking technology in UHF RFID systems.…”

Section: Introductionmentioning

confidence: 99%

“…To reduce the computation complexity and improve the identification performance of Aloha-based algorithms, we propose an effective frame breaking policy named detected sector based dynamic framed slotted Aloha (ds-DFSA) for the EPC C1 Gen2 standard [9]. Specifically, the proposed algorithm determines the optimal frame size based on the observation of a fraction of current frame.…”

Section: Introductionmentioning

confidence: 99%

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An Effective Frame Breaking Policy for Dynamic Framed Slotted Aloha in RFID

Sheng

Hong

et al. 2016

IEEE Commun. Lett.

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Guangjun (2016) An effective frame breaking policy for dynamic framed slotted aloha in RFID. IEEE Communications Letters, 20 (4). pp. 692-695. ISSN 1089-7798 This version is available from Sussex Research Online: http://sro.sussex.ac.uk/59314/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Abstract-Tag collision problem is considered as one of the critical issues in RFID system. To further improve the identification efficiency of UHF RFID system, a frame breaking policy is proposed with dynamic framed slotted aloha algorithm. Specifically, the reader makes effective use of idle, successful and collision statistics during the early observation phase to recursively determine the optimal frame size. Then the collided tags in each slot will be resolved by individual frames. Simulation results show that the proposed algorithm achieves a better identification performance compared with the existing Alohabased algorithms.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Effective Frame Breaking Policy for Dynamic Framed Slotted Aloha in RFID

Sheng

Hong

et al. 2016

IEEE Commun. Lett.

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“…For instance, Mindikoglu et al linearly combine the outputs of the elements of an antenna array, model the source signals as Zero Constant Modulus (ZCM) signals in order to remove the mutual interference and test the corresponding ZCM algorithms on synthetic and measured data sets with a simulation setup. Under the singlereceive-antenna detection scheme category, Zero Forcing (ZF) and Successive Interference Cancellation (SIC) are used in [6]. Maximum Likelihood (ML) sequence decoders are considered in [11][12][13].…”

Section: Related Workmentioning

confidence: 99%

Performance Enhancement of the Rfid Epc Gen2 Protocol by Exploiting Collision Recovery

Donno

Tarricone²,

Catarinucci³

et al. 2012

PIER B

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Abstract-Maximizing the Radio Frequency Identification (RFID) performance is one of the main challenges in application domains, such as logistics and supply chain management, where the undesired effect of Tag collisions can significantly degrade the speed of the inventory process. The dominating UHF EPC Class-1 Generation-2 (EPC Gen2) protocol only specifies collision avoidance algorithms but makes no provision for collision resolution. In this paper, performance enhancement of the EPC Gen2 standard exploiting Tag collision recovery is demonstrated, for the first time, in real time with measurements. Three simple and effective approaches to handle successful Tag acknowledgments of recovered collided packets are proposed and implemented on a software-defined Reader and programmable Tags. The attained benefits over the conventional EPC Gen2 MAC scheme are significant: the throughput per time slot is increased by 72% while the overall time required to inventory the Tag population is reduced by 26%. The effectiveness of the proposed approach and the validity of the achieved results are confirmed by the good agreement with simulations reported in the literature.

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“…However, it is extremely difficult to be implemented in EPC C1 Gen2 [7] or ISO 18000-6B [8] based UHF RFID systems, because of the wide deviation of received signals at a reader which cannot efficiently detect bits collision positions in a large scale. For example, in EPC C1 Gen2 standard, the symbol rate deviations of modulation signals may up to ±22% between tags [7] [9], which causes arrival times of different tag responses vary greatly in a range of 24 microseconds (µs). Similarly, in ISO 18000-6B standard, the symbol rates of tags also deviate up to ±15%.…”

mentioning

confidence: 99%

An efficient sub-frame based tag identification algorithm for UHF RFID systems

Sheng

Hong

et al. 2016

2016 IEEE International Conference on Communications (ICC)

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Abstract-In this paper, we propose an efficient identification algorithm for RFID systems based on EPC C1 Gen2 RFID standard 1 . Specifically, the proposed anti-collision algorithm is based on the observation of sub-frame during an identification process, and makes effective use of idle and collision statistics to accurately estimate the tag backlog and determine the proper frame size for the next inventory round. Simulation results are supplemented to demonstrate the advantages of the proposed algorithm in achieving time and computation efficiency.

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RFID Reader Receivers for Physical Layer Collision Recovery

Cited by 152 publications

References 23 publications

An Effective Frame Breaking Policy for Dynamic Framed Slotted Aloha in RFID

An Effective Frame Breaking Policy for Dynamic Framed Slotted Aloha in RFID

Performance Enhancement of the Rfid Epc Gen2 Protocol by Exploiting Collision Recovery

An efficient sub-frame based tag identification algorithm for UHF RFID systems

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