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A low delay multipl...
A low delay multiple reader passive RFID system using orthogonal TH-PPM IR-UWB
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- Zhang, Zhi (author)
- KTH,Elektronik- och datorsystem, ECS,VinnExcellence Center for Intelligence in Paper and Packaging, iPACK
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- Lu, Zhonghai (author)
- KTH,Elektronik- och datorsystem, ECS,VinnExcellence Center for Intelligence in Paper and Packaging, iPACK
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- Pang, Zhibo (author)
- KTH,VinnExcellence Center for Intelligence in Paper and Packaging, iPACK
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- Chen, Qiang (author)
- KTH,Elektronik- och datorsystem, ECS,VinnExcellence Center for Intelligence in Paper and Packaging, iPACK
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- Zheng, Li-Rong (author)
- KTH,Elektronik- och datorsystem, ECS,VinnExcellence Center for Intelligence in Paper and Packaging, iPACK
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- Yan, Xiaolang (author)
- Institute of VLSI Design, Zhejiang University, Hangzhou, China
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(creator_code:org_t)
- Zurich, 2010
- 2010
- English.
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In: Proceedings - International Conference on Computer Communications and Networks, ICCCN. - Zurich.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Current passive RFID systems face the challenges to locate mobile objects in real time in indoor environments, including the realization of low delay as well as effective cooperation among readers and accurate ranging ability in the physical layer. In order to overcome these challenges, this paper presents a low delay multi-reader passive RFID system using ultra high frequency (UHF) radio as the forward link from readers to tags and orthogonal time hopping pulse-position modulation (TH-PPM) impulse ultra-wideband radio (IR-UWB) over the dynamic framed slotted ALOHA algorithm as the backward link from tags to readers. The asymmetric radio links overlap parts of the forward and backward transmission and avoid reader-tag collisions. Readers cooperate via network synchronization by a server and a contention-based update strategy to acknowledge tags. An optimal system configured with 4 readers using 16 orthogonal TH sequences is suggested and operates 3 times faster than the theoretical potential of EPC Class-1 Generation-2 protocol with the listen-before-talk scheme.
Keyword
- IR-UWB
- Multi-reader
- Orthogonal TH-PPM
- Passive RFID
- Contention-based
- Forward links
- Indoor environment
- Low delay
- Mobile objects
- Network synchronization
- Physical layers
- Real time
- Slotted Aloha
- Tag collision
- Time-hopping
- Ultra-high frequency
- Ultra-wideband radio
- Local area networks
- Radio broadcasting
- Radio links
- Radio transmission
- Real time systems
- Broadband networks
Publication and Content Type
- ref (subject category)
- kon (subject category)
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