IEICE TRANSACTIONS on Communications
Interference Reduction Scheme for UHF Passive RFID Systems Using Modulation Index Control
Summary :
The performance of a UHF-band passive RFID system in a dense multi-reader environment is limited by both the reader-to-reader interference and reader-to-tag interference. In this paper, first, we propose a combination of subcarrier modulation backscattering and reduced carrier frequency offset among readers to reduce both the reader-to-reader interference and the reader-to-tag interference. Then, we propose a new distributed modulation index control scheme using the readers' estimation of the tag's SINR in order to further reduce the reader-to-tag interference. By adaptively controlling each reader's transmission modulation index, the asymmetric reader-to-tag interference can be effectively controlled to satisfy the required SINR of tags. Computer simulations show that the proposed scheme can reduce the minimum required inter-reader distance or increase the number of concurrently operable readers in dense multi-reader environments, especially when there are large differences in the levels of reader-to-tag interference. We show some optimizations of the proposed scheme for practical RFID applications. We also propose a bandwidth efficient modulation scheme for reader transmission which is suitable for the proposed modulation index control scheme.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E92-B No.4 pp.1272-1281
- Publication Date
- 2009/04/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E92.B.1272
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Keyword
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Yoshinori TANAKA, Iwao SASASE, "Interference Reduction Scheme for UHF Passive RFID Systems Using Modulation Index Control" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 4, pp. 1272-1281, April 2009, doi: 10.1587/transcom.E92.B.1272.
Abstract: The performance of a UHF-band passive RFID system in a dense multi-reader environment is limited by both the reader-to-reader interference and reader-to-tag interference. In this paper, first, we propose a combination of subcarrier modulation backscattering and reduced carrier frequency offset among readers to reduce both the reader-to-reader interference and the reader-to-tag interference. Then, we propose a new distributed modulation index control scheme using the readers' estimation of the tag's SINR in order to further reduce the reader-to-tag interference. By adaptively controlling each reader's transmission modulation index, the asymmetric reader-to-tag interference can be effectively controlled to satisfy the required SINR of tags. Computer simulations show that the proposed scheme can reduce the minimum required inter-reader distance or increase the number of concurrently operable readers in dense multi-reader environments, especially when there are large differences in the levels of reader-to-tag interference. We show some optimizations of the proposed scheme for practical RFID applications. We also propose a bandwidth efficient modulation scheme for reader transmission which is suitable for the proposed modulation index control scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.1272/_p
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@ARTICLE{e92-b_4_1272,
author={Yoshinori TANAKA, Iwao SASASE, },
journal={IEICE TRANSACTIONS on Communications},
title={Interference Reduction Scheme for UHF Passive RFID Systems Using Modulation Index Control},
year={2009},
volume={E92-B},
number={4},
pages={1272-1281},
abstract={The performance of a UHF-band passive RFID system in a dense multi-reader environment is limited by both the reader-to-reader interference and reader-to-tag interference. In this paper, first, we propose a combination of subcarrier modulation backscattering and reduced carrier frequency offset among readers to reduce both the reader-to-reader interference and the reader-to-tag interference. Then, we propose a new distributed modulation index control scheme using the readers' estimation of the tag's SINR in order to further reduce the reader-to-tag interference. By adaptively controlling each reader's transmission modulation index, the asymmetric reader-to-tag interference can be effectively controlled to satisfy the required SINR of tags. Computer simulations show that the proposed scheme can reduce the minimum required inter-reader distance or increase the number of concurrently operable readers in dense multi-reader environments, especially when there are large differences in the levels of reader-to-tag interference. We show some optimizations of the proposed scheme for practical RFID applications. We also propose a bandwidth efficient modulation scheme for reader transmission which is suitable for the proposed modulation index control scheme.},
keywords={},
doi={10.1587/transcom.E92.B.1272},
ISSN={1745-1345},
month={April},}
Copy
TY - JOUR
TI - Interference Reduction Scheme for UHF Passive RFID Systems Using Modulation Index Control
T2 - IEICE TRANSACTIONS on Communications
SP - 1272
EP - 1281
AU - Yoshinori TANAKA
AU - Iwao SASASE
PY - 2009
DO - 10.1587/transcom.E92.B.1272
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2009
AB - The performance of a UHF-band passive RFID system in a dense multi-reader environment is limited by both the reader-to-reader interference and reader-to-tag interference. In this paper, first, we propose a combination of subcarrier modulation backscattering and reduced carrier frequency offset among readers to reduce both the reader-to-reader interference and the reader-to-tag interference. Then, we propose a new distributed modulation index control scheme using the readers' estimation of the tag's SINR in order to further reduce the reader-to-tag interference. By adaptively controlling each reader's transmission modulation index, the asymmetric reader-to-tag interference can be effectively controlled to satisfy the required SINR of tags. Computer simulations show that the proposed scheme can reduce the minimum required inter-reader distance or increase the number of concurrently operable readers in dense multi-reader environments, especially when there are large differences in the levels of reader-to-tag interference. We show some optimizations of the proposed scheme for practical RFID applications. We also propose a bandwidth efficient modulation scheme for reader transmission which is suitable for the proposed modulation index control scheme.
ER -
English
