research-article

Free Your CSI: A Channel State Information Extraction Platform For Modern Wi-Fi Chipsets

Authors:

Francesco Gringoli,

Matthias Schulz,

Matthias HollickAuthors Info & Claims

WiNTECH '19: Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization

Pages 21 - 28

https://doi.org/10.1145/3349623.3355477

Published: 04 October 2019 Publication History

Abstract

Modern wireless transmission systems heavily benefit from knowing the channel response. The evaluation of Channel State Information (CSI) during the reception of a frame preamble is fundamental to properly equalizing the rest of the transmission at the receiver side. Reporting this state information back to the transmitter facilitates mechanisms such as beamforming and MIMO, thus boosting the network performance. While these features are an integral part of standards such as 802.11ac, accessing CSI data on commercial devices is either not possible, limited to outdated chipsets or very inflexible. This hinders the research and development of innovative CSI-dependent techniques including localization, object tracking, and interference evaluation. To help researchers and practitioners, we introduce the nexmon CSI Extractor Tool. It allows per-frame CSI extraction for up to four spatial streams using up to four receive chains on modern Broadcom and Cypress Wi-Fi chips with up to 80MHz bandwidth in both the 2.4 and 5GHz bands. The tool supports devices ranging from the low-cost Raspberry Pi platform, over mobile platforms such as Nexus smartphones to state-of-the-art Wi-Fi APs. We release all tools and Wi-Fi firmware patches as extensible open source project. It includes our user-friendly smartphone application to demonstrate the CSI extraction capabilities in form of a waterfall diagram.

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Cited By

Kim HKim YKim W(2024)Deep Reinforcement Learning-Based Adaptive Scheduling for Wireless Time-Sensitive NetworkingSensors10.3390/s2416528124:16(5281)Online publication date: 15-Aug-2024
https://doi.org/10.3390/s24165281
Hao ZHan KZhang ZDang X(2024)Wi-CHAR: A WiFi Sensing Approach with Focus on Both Scenes and Restricted DataSensors10.3390/s2407236424:7(2364)Online publication date: 8-Apr-2024
https://doi.org/10.3390/s24072364
Varga D(2024)Exposing Data Leakage in Wi-Fi CSI-Based Human Action Recognition: A Critical AnalysisInventions10.3390/inventions90400909:4(90)Online publication date: 15-Aug-2024
https://doi.org/10.3390/inventions9040090
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Index Terms

Free Your CSI: A Channel State Information Extraction Platform For Modern Wi-Fi Chipsets
1. Hardware
  1. Communication hardware, interfaces and storage
    1. Wireless devices
2. Networks
  1. Network types
    1. Wireless access networks
      1. Wireless local area networks

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Published In

cover image ACM Conferences

WiNTECH '19: Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization

October 2019

58 pages

ISBN:9781450369312

DOI:10.1145/3349623

General Chairs:
Yiannis Pefkianakis
Apple, USA
,
Kate Ching-Ju Lin
National Chiao Tung University, Taiwan

Copyright © 2019 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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SIGMOBILE: ACM Special Interest Group on Mobility of Systems, Users, Data and Computing

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 04 October 2019

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Funding Sources

Deutsche Forschungsgemeinschaft (DFG)
LOEWE centre

Conference

MobiCom '19

Sponsor:

SIGMOBILE

MobiCom '19: The 25th Annual International Conference on Mobile Computing and Networking

October 25, 2019

Los Cabos, Mexico

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Overall Acceptance Rate 63 of 100 submissions, 63%

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Cited By

Kim HKim YKim W(2024)Deep Reinforcement Learning-Based Adaptive Scheduling for Wireless Time-Sensitive NetworkingSensors10.3390/s2416528124:16(5281)Online publication date: 15-Aug-2024
https://doi.org/10.3390/s24165281
Hao ZHan KZhang ZDang X(2024)Wi-CHAR: A WiFi Sensing Approach with Focus on Both Scenes and Restricted DataSensors10.3390/s2407236424:7(2364)Online publication date: 8-Apr-2024
https://doi.org/10.3390/s24072364
Varga D(2024)Exposing Data Leakage in Wi-Fi CSI-Based Human Action Recognition: A Critical AnalysisInventions10.3390/inventions90400909:4(90)Online publication date: 15-Aug-2024
https://doi.org/10.3390/inventions9040090
Sharma ALi JMishra DJha SSeneviratne A(2024)Towards Energy Efficient Wireless Sensing by Leveraging Ambient Wi-Fi TrafficEnergies10.3390/en1702048517:2(485)Online publication date: 19-Jan-2024
https://doi.org/10.3390/en17020485
Xi ZZhang GZhang BZhang T(2024)Device Identity Recognition Based on an Adaptive Environment for Intrinsic Security FingerprintsElectronics10.3390/electronics1303065613:3(656)Online publication date: 5-Feb-2024
https://doi.org/10.3390/electronics13030656
Bian JZheng MLiu HMao JLi HTan C(2024)SimpleViTFi: A Lightweight Vision Transformer Model for Wi-Fi-Based Person IdentificationIEICE Transactions on Communications10.23919/transcom.2023EBP3102E107-B:4(377-386)Online publication date: Apr-2024
https://doi.org/10.23919/transcom.2023EBP3102
Turetta CKindt PMasrur AChakraborty SPravadelli GDemrozi F(2024)Environmental Microchanges in WiFi Sensing2024 Design, Automation & Test in Europe Conference & Exhibition (DATE)10.23919/DATE58400.2024.10546544(1-2)Online publication date: 25-Mar-2024
https://doi.org/10.23919/DATE58400.2024.10546544
Hassan MKelsey TRahman F(2024)Adversarial AI applied to cross-user inter-domain and intra-domain adaptation in human activity recognition using wireless signalsPLOS ONE10.1371/journal.pone.029888819:4(e0298888)Online publication date: 18-Apr-2024
https://doi.org/10.1371/journal.pone.0298888
Gu YChen JWu CHe KZhao ZDu R(2024)LocCamsProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36314327:4(1-24)Online publication date: 12-Jan-2024
https://dl.acm.org/doi/10.1145/3631432
Rosani MCena GCavalcanti DFrascolla VMarchetto GScanzio S(2024)A Software Platform for Testing Multi-Link Operation in Industrial Wi-Fi Networks2024 IEEE 20th International Conference on Factory Communication Systems (WFCS)10.1109/WFCS60972.2024.10540967(1-8)Online publication date: 17-Apr-2024
https://doi.org/10.1109/WFCS60972.2024.10540967
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