Doppler Sensing Using WiFi Round-Trip Channel State Information

Fangzhan Shi; Wenda Li; Chong Tang; Paul Brennan; Kevin Chetty

doi:10.1109/WCNC55385.2023.10119022

Doppler Sensing Using WiFi Round-Trip Channel State Information

Fangzhan Shi, Wenda Li, Chong Tang, Paul Brennan, Kevin Chetty

Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

133 Downloads (Pure)

Abstract

This paper presents a wireless Doppler sensing system using WiFi round-trip channel state information (RTCSI), which is implemented using the channel state information (CSI) from the Raspberry Pi CM4 onboard WiFi chip and a customized WiFi protocol. Utilizing the CSI phase in WiFi sensing is challenging as hardware asynchronization introduces significant phase errors. Similar to WiFi round-trip time (RTT) ranging, RTCSI was proposed to cancel the adverse effect of asynchronization through two-way communication. However, previous work mainly focuses on measuring RTCSI over frequency (different WiFi channels) to simulate a wide-band ranging. In this work, RTCSI is measured over time and a Doppler sensing prototype is built to detect a moving target in the wireless channel. Our findings show that this RTCSI-based Doppler sensing system is sensitive and effective in the real world. Moreover, it may be integrated with other techniques further to improve the performance in joint communications and sensing.

Original language	English
Title of host publication	2023 IEEE Wireless Communications and Networking Conference, WCNC 2023
Subtitle of host publication	Proceedings
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	6
ISBN (Electronic)	9781665491228
ISBN (Print)	9781665491235
DOIs	https://doi.org/10.1109/WCNC55385.2023.10119022
Publication status	Published - 12 Mar 2023
Event	2023 IEEE Wireless Communications and Networking Conference - Scottish Event Campus, Glasgow, United Kingdom Duration: 26 Mar 2023 → 29 Mar 2023 https://wcnc2023.ieee-wcnc.org/

Publication series

Name
Volume	2023-March
ISSN (Print)	1525-3511

Conference

Conference	2023 IEEE Wireless Communications and Networking Conference
Abbreviated title	WCNC 2023
Country/Territory	United Kingdom
City	Glasgow
Period	26/03/23 → 29/03/23
Internet address	https://wcnc2023.ieee-wcnc.org/

Keywords

Channel State Information
Joint Communication and Sensing
WiFi Doppler Sensing

ASJC Scopus subject areas

General Engineering

Access to Document

10.1109/WCNC55385.2023.10119022

Author Accepted ManuscriptAccepted author manuscript, 1.09 MB

Cite this

@inproceedings{ba81fd739fc340dea88513f1435a60de,

title = "Doppler Sensing Using WiFi Round-Trip Channel State Information",

abstract = "This paper presents a wireless Doppler sensing system using WiFi round-trip channel state information (RTCSI), which is implemented using the channel state information (CSI) from the Raspberry Pi CM4 onboard WiFi chip and a customized WiFi protocol. Utilizing the CSI phase in WiFi sensing is challenging as hardware asynchronization introduces significant phase errors. Similar to WiFi round-trip time (RTT) ranging, RTCSI was proposed to cancel the adverse effect of asynchronization through two-way communication. However, previous work mainly focuses on measuring RTCSI over frequency (different WiFi channels) to simulate a wide-band ranging. In this work, RTCSI is measured over time and a Doppler sensing prototype is built to detect a moving target in the wireless channel. Our findings show that this RTCSI-based Doppler sensing system is sensitive and effective in the real world. Moreover, it may be integrated with other techniques further to improve the performance in joint communications and sensing.",

keywords = "Channel State Information, Joint Communication and Sensing, WiFi Doppler Sensing",

author = "Fangzhan Shi and Wenda Li and Chong Tang and Paul Brennan and Kevin Chetty",

note = "Funding Information: Fangzhan Shi is funded by the China Scholarship Council (CSC) from the Ministry of Education of P.R. China. Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 ; Conference date: 26-03-2023 Through 29-03-2023",

year = "2023",

month = mar,

day = "12",

doi = "10.1109/WCNC55385.2023.10119022",

language = "English",

isbn = "9781665491235",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2023 IEEE Wireless Communications and Networking Conference, WCNC 2023",

address = "United States",

url = "https://wcnc2023.ieee-wcnc.org/",

}

Shi, F, Li, W, Tang, C, Brennan, P & Chetty, K 2023, Doppler Sensing Using WiFi Round-Trip Channel State Information. in 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023: Proceedings., 10119022, Institute of Electrical and Electronics Engineers Inc., Piscataway, NJ, 2023 IEEE Wireless Communications and Networking Conference, Glasgow, United Kingdom, 26/03/23. https://doi.org/10.1109/WCNC55385.2023.10119022

Doppler Sensing Using WiFi Round-Trip Channel State Information. / Shi, Fangzhan; Li, Wenda; Tang, Chong et al.
2023 IEEE Wireless Communications and Networking Conference, WCNC 2023: Proceedings. Piscataway, NJ: Institute of Electrical and Electronics Engineers Inc., 2023. 10119022.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Doppler Sensing Using WiFi Round-Trip Channel State Information

AU - Shi, Fangzhan

AU - Li, Wenda

AU - Tang, Chong

AU - Brennan, Paul

AU - Chetty, Kevin

PY - 2023/3/12

Y1 - 2023/3/12

N2 - This paper presents a wireless Doppler sensing system using WiFi round-trip channel state information (RTCSI), which is implemented using the channel state information (CSI) from the Raspberry Pi CM4 onboard WiFi chip and a customized WiFi protocol. Utilizing the CSI phase in WiFi sensing is challenging as hardware asynchronization introduces significant phase errors. Similar to WiFi round-trip time (RTT) ranging, RTCSI was proposed to cancel the adverse effect of asynchronization through two-way communication. However, previous work mainly focuses on measuring RTCSI over frequency (different WiFi channels) to simulate a wide-band ranging. In this work, RTCSI is measured over time and a Doppler sensing prototype is built to detect a moving target in the wireless channel. Our findings show that this RTCSI-based Doppler sensing system is sensitive and effective in the real world. Moreover, it may be integrated with other techniques further to improve the performance in joint communications and sensing.

AB - This paper presents a wireless Doppler sensing system using WiFi round-trip channel state information (RTCSI), which is implemented using the channel state information (CSI) from the Raspberry Pi CM4 onboard WiFi chip and a customized WiFi protocol. Utilizing the CSI phase in WiFi sensing is challenging as hardware asynchronization introduces significant phase errors. Similar to WiFi round-trip time (RTT) ranging, RTCSI was proposed to cancel the adverse effect of asynchronization through two-way communication. However, previous work mainly focuses on measuring RTCSI over frequency (different WiFi channels) to simulate a wide-band ranging. In this work, RTCSI is measured over time and a Doppler sensing prototype is built to detect a moving target in the wireless channel. Our findings show that this RTCSI-based Doppler sensing system is sensitive and effective in the real world. Moreover, it may be integrated with other techniques further to improve the performance in joint communications and sensing.

KW - Channel State Information

KW - Joint Communication and Sensing

KW - WiFi Doppler Sensing

U2 - 10.1109/WCNC55385.2023.10119022

DO - 10.1109/WCNC55385.2023.10119022

M3 - Conference contribution

AN - SCOPUS:85159781826

SN - 9781665491235

BT - 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023

PB - Institute of Electrical and Electronics Engineers Inc.

CY - Piscataway, NJ

T2 - 2023 IEEE Wireless Communications and Networking Conference

Y2 - 26 March 2023 through 29 March 2023

ER -

Doppler Sensing Using WiFi Round-Trip Channel State Information

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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Cite this