Concurrent backscatter streaming from batteryless and wireless sensor tags with multiple subcarrier multiple access

Nitish Rajoria, Yuki Igarashi, Jin Mitsugi, Yuusuke Kawakita, Haruhisa Ichikawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper proposes a novel multiple access method that enables concurrent sensor data streaming from multiple batteryless, wireless sensor tags. The access method is a pseudo-FDMA scheme based on the subcarrier backscatter communication principle, which is widely employed in passive RFID and radar systems. Concurrency is realized by assigning a dedicated subcarrier to each sensor tag and letting all sensor tags backscatter simultaneously. Because of the nature of the subcarrier, which is produced by constant rate switching of antenna impedance without any channel filter in the sensor tag, the tag-to-reader link always exhibits harmonics. Thus, it is important to reject harmonics when concurrent data streaming is required. This paper proposes a harmonics rejecting receiver to allow simultaneous multiple subcarrier usage. This paper particularly focuses on analog sensor data streaming which minimizes the functional requirements on the sensor tag and frequency bandwidth. The harmonics rejection receiver is realized by carefully handling group delay and phase delay of the subcarrier envelope and the carrier signal to accurately produce replica of the harmonics by introducing Hilbert and inverse Hilbert transformations. A numerical simulator with Simulink and a hardware implementation with USRP and LabVIEW have been developed. Simulations and experiments reveal that even if the CIR before harmonics rejection is 0 dB, the proposed receiver recovers the original sensor data with over 0.98 cross-correlation.

Original languageEnglish
Pages (from-to)2121-2128
Number of pages8
JournalIEICE Transactions on Communications
VolumeE100B
Issue number12
DOIs
Publication statusPublished - 2017 Dec 1

Fingerprint

Sensors
Frequency division multiple access
Group delay
Radar systems
Radio frequency identification (RFID)
Simulators
Antennas
Hardware
Bandwidth
Communication
Experiments

Keywords

  • Backscatter communication
  • Harmonic rejection
  • Multiple access

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Concurrent backscatter streaming from batteryless and wireless sensor tags with multiple subcarrier multiple access. / Rajoria, Nitish; Igarashi, Yuki; Mitsugi, Jin; Kawakita, Yuusuke; Ichikawa, Haruhisa.

In: IEICE Transactions on Communications, Vol. E100B, No. 12, 01.12.2017, p. 2121-2128.

Research output: Contribution to journalArticle

Rajoria, Nitish ; Igarashi, Yuki ; Mitsugi, Jin ; Kawakita, Yuusuke ; Ichikawa, Haruhisa. / Concurrent backscatter streaming from batteryless and wireless sensor tags with multiple subcarrier multiple access. In: IEICE Transactions on Communications. 2017 ; Vol. E100B, No. 12. pp. 2121-2128.
@article{2bc147437a9249d8b90f6d0520691751,
title = "Concurrent backscatter streaming from batteryless and wireless sensor tags with multiple subcarrier multiple access",
abstract = "This paper proposes a novel multiple access method that enables concurrent sensor data streaming from multiple batteryless, wireless sensor tags. The access method is a pseudo-FDMA scheme based on the subcarrier backscatter communication principle, which is widely employed in passive RFID and radar systems. Concurrency is realized by assigning a dedicated subcarrier to each sensor tag and letting all sensor tags backscatter simultaneously. Because of the nature of the subcarrier, which is produced by constant rate switching of antenna impedance without any channel filter in the sensor tag, the tag-to-reader link always exhibits harmonics. Thus, it is important to reject harmonics when concurrent data streaming is required. This paper proposes a harmonics rejecting receiver to allow simultaneous multiple subcarrier usage. This paper particularly focuses on analog sensor data streaming which minimizes the functional requirements on the sensor tag and frequency bandwidth. The harmonics rejection receiver is realized by carefully handling group delay and phase delay of the subcarrier envelope and the carrier signal to accurately produce replica of the harmonics by introducing Hilbert and inverse Hilbert transformations. A numerical simulator with Simulink and a hardware implementation with USRP and LabVIEW have been developed. Simulations and experiments reveal that even if the CIR before harmonics rejection is 0 dB, the proposed receiver recovers the original sensor data with over 0.98 cross-correlation.",
keywords = "Backscatter communication, Harmonic rejection, Multiple access",
author = "Nitish Rajoria and Yuki Igarashi and Jin Mitsugi and Yuusuke Kawakita and Haruhisa Ichikawa",
year = "2017",
month = "12",
day = "1",
doi = "10.1587/transcom.2016EBP3472",
language = "English",
volume = "E100B",
pages = "2121--2128",
journal = "IEICE Transactions on Communications",
issn = "0916-8516",
publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",
number = "12",

}

TY - JOUR

T1 - Concurrent backscatter streaming from batteryless and wireless sensor tags with multiple subcarrier multiple access

AU - Rajoria, Nitish

AU - Igarashi, Yuki

AU - Mitsugi, Jin

AU - Kawakita, Yuusuke

AU - Ichikawa, Haruhisa

PY - 2017/12/1

Y1 - 2017/12/1

N2 - This paper proposes a novel multiple access method that enables concurrent sensor data streaming from multiple batteryless, wireless sensor tags. The access method is a pseudo-FDMA scheme based on the subcarrier backscatter communication principle, which is widely employed in passive RFID and radar systems. Concurrency is realized by assigning a dedicated subcarrier to each sensor tag and letting all sensor tags backscatter simultaneously. Because of the nature of the subcarrier, which is produced by constant rate switching of antenna impedance without any channel filter in the sensor tag, the tag-to-reader link always exhibits harmonics. Thus, it is important to reject harmonics when concurrent data streaming is required. This paper proposes a harmonics rejecting receiver to allow simultaneous multiple subcarrier usage. This paper particularly focuses on analog sensor data streaming which minimizes the functional requirements on the sensor tag and frequency bandwidth. The harmonics rejection receiver is realized by carefully handling group delay and phase delay of the subcarrier envelope and the carrier signal to accurately produce replica of the harmonics by introducing Hilbert and inverse Hilbert transformations. A numerical simulator with Simulink and a hardware implementation with USRP and LabVIEW have been developed. Simulations and experiments reveal that even if the CIR before harmonics rejection is 0 dB, the proposed receiver recovers the original sensor data with over 0.98 cross-correlation.

AB - This paper proposes a novel multiple access method that enables concurrent sensor data streaming from multiple batteryless, wireless sensor tags. The access method is a pseudo-FDMA scheme based on the subcarrier backscatter communication principle, which is widely employed in passive RFID and radar systems. Concurrency is realized by assigning a dedicated subcarrier to each sensor tag and letting all sensor tags backscatter simultaneously. Because of the nature of the subcarrier, which is produced by constant rate switching of antenna impedance without any channel filter in the sensor tag, the tag-to-reader link always exhibits harmonics. Thus, it is important to reject harmonics when concurrent data streaming is required. This paper proposes a harmonics rejecting receiver to allow simultaneous multiple subcarrier usage. This paper particularly focuses on analog sensor data streaming which minimizes the functional requirements on the sensor tag and frequency bandwidth. The harmonics rejection receiver is realized by carefully handling group delay and phase delay of the subcarrier envelope and the carrier signal to accurately produce replica of the harmonics by introducing Hilbert and inverse Hilbert transformations. A numerical simulator with Simulink and a hardware implementation with USRP and LabVIEW have been developed. Simulations and experiments reveal that even if the CIR before harmonics rejection is 0 dB, the proposed receiver recovers the original sensor data with over 0.98 cross-correlation.

KW - Backscatter communication

KW - Harmonic rejection

KW - Multiple access

UR - http://www.scopus.com/inward/record.url?scp=85038360290&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038360290&partnerID=8YFLogxK

U2 - 10.1587/transcom.2016EBP3472

DO - 10.1587/transcom.2016EBP3472

M3 - Article

AN - SCOPUS:85038360290

VL - E100B

SP - 2121

EP - 2128

JO - IEICE Transactions on Communications

JF - IEICE Transactions on Communications

SN - 0916-8516

IS - 12

ER -