The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Prestasi sistem RFID pasif jalur UHF dalam persekitaran berbilang pembaca yang padat dihadkan oleh kedua-dua gangguan pembaca-ke-pembaca dan gangguan pembaca-ke-tag. Dalam makalah ini, pertama sekali, kami mencadangkan gabungan penyerakan belakang modulasi subpembawa dan pengurangan kekerapan pembawa di kalangan pembaca untuk mengurangkan kedua-dua gangguan pembaca-ke-pembaca dan gangguan pembaca-ke-tag. Kemudian, kami mencadangkan skim kawalan indeks modulasi teragih baharu menggunakan anggaran pembaca SINR teg untuk mengurangkan lagi gangguan pembaca-ke-tag. Dengan menyesuaikan indeks modulasi penghantaran setiap pembaca secara adaptif, gangguan pembaca-ke-tag asimetri boleh dikawal dengan berkesan untuk memenuhi SINR tag yang diperlukan. Simulasi komputer menunjukkan bahawa skema yang dicadangkan boleh mengurangkan jarak minimum antara pembaca yang diperlukan atau meningkatkan bilangan pembaca yang boleh dikendalikan serentak dalam persekitaran berbilang pembaca yang padat, terutamanya apabila terdapat perbezaan besar dalam tahap gangguan pembaca-ke-tag. Kami menunjukkan beberapa pengoptimuman skim yang dicadangkan untuk aplikasi RFID praktikal. Kami juga mencadangkan skim modulasi cekap jalur lebar untuk penghantaran pembaca yang sesuai untuk skim kawalan indeks modulasi yang dicadangkan.
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Salinan
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
Salinan
@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},}
Salinan
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 -