Phase based spatial identification of UHF RFID tags

Никитин, П.В.; Martinez, Rene; Ramamurthy, Shashi; Leland, Hunter; Spiess, Gary; Rao, K. V.

doi:10.1109/rfid.2010.5467253

Cited by 388 publications

(167 citation statements)

References 54 publications

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“…The system is denoted as backward link limited, if the forward link channel gain is higher than F Th , but the backscatter link channel gain is lower than B Th [10]. …”

Section: Evaluation Methodsmentioning

confidence: 99%

“…On the one hand, the reader has to fulfill requirements with respect to the signal power in the communication links, i.e., the reader has to provide a sufficient transmission power and sensitivity. On the other hand, the reader has to fulfill requirements in order to perform localization based on phase difference of arrival (PDoA) techniques [10]. The core of the reader is chosen to be an SDR, to guarantee a fast implementation of the hardware and the PDoA algorithms.…”

Section: Reader Hardware Implementationmentioning

confidence: 99%

“…5.2), the SDR has to provide at least one transmitting chain and two receiving chains. For detecting phase differences of the signals that are received at the two receiving antennas, it is important that the receiving chains provide phase coherence and phase alignment [10].…”

Section: Pdoa-related Requirementsmentioning

confidence: 99%

“…For the two dimensional localization of tags, two PDoA algorithms are implemented that estimate the direction (SD-PDoA) and the range (frequency domain (FD)-PDoA) of the tag, respectively. The definitions of the estimators are based on the assumption that the tag is far away from the reader, compared to the spacing of the receiving antennas, the tag is at rest within the time period of an estimation, and the tag is frequency independent within the range of the operating frequencies [10].…”

Section: Reader Software Implementationmentioning

confidence: 99%

“…)-that are necessary to perform a reliable tag localization in the engine test bed. The final reader implementation exploits phase difference of arrival (PDoA) techniques for the localization of RFID tags as they are more robust in multipath environments compared to state-of-the-art techniques that are based on the received signal strength [10]. For the exploitation of the PDoA techniques, the reader antennas are setup in a single input multiple output (SIMO) configuration.…”

Section: Introductionmentioning

confidence: 99%

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SIMO UHF RFID reader using sensor fusion for tag localization in a selected environment

Grosinger

Khan

Auinger

et al. 2016

Elektrotech. Inftech.

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This paper presents an ultra high frequency (UHF) radio frequency identification (RFID) reader for transponder (tag) localization in a selected environment-an AVL engine test bed. The choice of the UHF RFID reader hardware components is based on the evaluation of radio channel measurements in the engine test bed. The presented method of the channel measurement based implementation of an RFID reader can be favorably applied to realize reliable custom-built UHF RFID systems in any selected environment. The core of the implemented UHF RFID reader is a software defined radio (SDR) that enables rapid prototyping and thus a fast verification of localization techniques. The localization is realized by a single input multiple output (SIMO) antenna configuration and the exploitation of phase difference of arrival (PDoA) techniques. The implemented PDoA techniques allow to estimate the direction and the range of a tag. A sensor fusion of direction and range estimates enables a two dimensional tag localization. The functionality of the reader hardware implementation and the implemented PDoA techniques have been verified in an anechoic chamber reaching a localization accuracy of 15 cm.Keywords: phase difference of arrival; sensor fusion; software defined radio; tag localization; UHF RFID SIMO UHF RFID-Lesegerät zur Tag-Lokalisierung mittels Sensorfusion in einer ausgewählten Umgebung. Dieser Artikel präsentiert ein RFID (Radio Frequency

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“…The system is denoted as backward link limited, if the forward link channel gain is higher than F Th , but the backscatter link channel gain is lower than B Th [10]. …”

Section: Evaluation Methodsmentioning

confidence: 99%

Section: Reader Hardware Implementationmentioning

confidence: 99%

Section: Pdoa-related Requirementsmentioning

confidence: 99%

Section: Reader Software Implementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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