An UHF RFID performance evaluation architecture based on traces from a software defined transceiver

Bothe, Alexander; Schraeder, Constantin; Aschenbruck, Nils

doi:10.1109/rfid-ta.2014.6934203

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Despite these advances, the efficiency and versatility of the early systems were restricted by the USRP1 SDR and outdated GNU radio software. Recently, RFID systems have been upgraded with new hardware and software such as GNU Radio v3.6 and, subsequently, GNU Radio v3.7 with USRP2 SDR, mostly for commercial tags [ 20 , 21 ]. However, their application and flexibility for research are limited, since these modifications are rarely made publicly available [ 21 ].…”

Section: Related Workmentioning

confidence: 99%

“…Recently, RFID systems have been upgraded with new hardware and software such as GNU Radio v3.6 and, subsequently, GNU Radio v3.7 with USRP2 SDR, mostly for commercial tags [ 20 , 21 ]. However, their application and flexibility for research are limited, since these modifications are rarely made publicly available [ 21 ]. Furthermore, research has been conducted on customised FPGA-based systems [ 22 , 23 ].…”

Section: Related Workmentioning

confidence: 99%

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Empowering the Blind: Contactless Activity Recognition with Commodity Software-Defined Radio and Ultra-High-Frequency Radio Frequency Identification

Khan,

Althobaiti,

Almutiry

et al. 2024

Sensors

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This study presents a novel computational radio frequency identification (RFID) system designed specifically for assisting blind individuals, utilising software-defined radio (SDR) with coherent detection. The system employs battery-less ultra-high-frequency (UHF) tag arrays in Gen2 RFID systems, enhancing the transmission of sensed information beyond standard identification bits. Our method uses an SDR reader to efficiently manage multiple tags with Gen2 preambles implemented on a single transceiver card. The results highlight the system’s real-time capability to detect movements and direction of walking within a four-meter range, indicating significant advances in contactless activity monitoring. This system not only handles the complexities of multiple tag scenarios but also delineates the influence of system parameters on RFID operational efficiency. This study contributes to assistive technology, provides a platform for future advancements aimed at addressing contemporary limitations in pseudo-localisation, and offers a practical, affordable assistance system for blind individuals.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Empowering the Blind: Contactless Activity Recognition with Commodity Software-Defined Radio and Ultra-High-Frequency Radio Frequency Identification

Khan,

Althobaiti,

Almutiry

et al. 2024

Sensors

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“…To compensate these disadvantages, a trace-based evaluation architecture is a valuable alternative. [2] extends freely available RFID reader implementations based on GNU Radio (cf. [3]- [6]).…”

Section: Trace-based Evaluation Architecturementioning

confidence: 99%

Improving UHF RFID read rates by juggling selected bits

Bothe

Aschenbruck

2016

2016 IEEE International Conference on RFID (RFID)

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Increasing the robustness of EPCglobal Class 1 Generation 2 ultra-high frequency (UHF) Radio Frequency IDentification (RFID) communication is crucial for deployments in challenging scenarios, such as tags moving at high speeds or under harsh environmental conditions. It becomes even more important when sensor data has to be read at high data rates with low robustness modulation schemes. In this paper, our goal is to increase the RFID read rates for different modulation schemes at various Signal to Noise Ratios (SNRs). We propose and evaluate a selected subset of improvements, which can be implemented purely on the reader side and conform to the standard. First, we compare various combinations of clock recovery and bit decoding strategies. The results show, that the performance of individual combinations varies with the uplink encoding and SNR. The overall read rate can be improved if multiple combinations are used simultaneously. Second, we introduce and evaluate a basic soft-decision approach, which attempts to correct bit errors based on the calculated bit correlation scores. Overall, we can improve the read rates in our simulations by up to 31 %.

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