# Eliminating the Barriers: Demystifying Wi-Fi Baseband Design and Introducing the PicoScenes Wi-Fi Sensing Platform

@article{Jiang2022EliminatingTB,
title={Eliminating the Barriers: Demystifying Wi-Fi Baseband Design and Introducing the PicoScenes Wi-Fi Sensing Platform},
author={Zhiping Jiang and Tom Hao Luan and Xincheng Ren and Dongtao Lv and Han Hao and Jing Wang and Kun Zhao and Wei Xi and Yueshen Xu and Rui Li},
journal={IEEE Internet of Things Journal},
year={2022},
volume={9},
pages={4476-4496}
}
• Published 20 October 2020
• Computer Science
• IEEE Internet of Things Journal
The research on Wi-Fi sensing has been thriving over the past decade but the process has not been smooth. Three barriers always hamper the research: 1) unknown baseband design and its influence; 2) inadequate hardware; and 3) the lack of versatile and flexible measurement software. This article tries to eliminate these barriers through the following work. First, we present an in-depth study of the baseband design of the Qualcomm Atheros AR9300 (QCA9300) NIC. We identify a missing item of the…

## References

SHOWING 1-10 OF 53 REFERENCES
<inline-formula><tex-math notation="LaTeX">$\pi$</tex-math><alternatives> <inline-graphic xlink:href="zhu-ieq1-2793222.gif"/></alternatives></inline-formula>-Splicer: Perceiving Accurate CSI Phases with Commodity WiFi Devices
• Computer Science
IEEE Transactions on Mobile Computing
• 2018
Results of extensive real-world experiments indicate that accurate CSI phase measurements can significantly improve the performance of splicing and the stability of the derived power delay profiles (PDPs).
Decimeter Ranging With Channel State Information
• Computer Science
IEEE Transactions on Wireless Communications
• 2019
This paper aims at the problem of time-of-flight estimation using channel state information obtainable from commercialized multiple-input-multiple-output orthogonal frequency-division multiplexing wireless local area network (WLAN) receivers by first understanding CSI, its constituent building blocks, and the sources of error that contaminate it and introducing pre-processing methods to clean CSI from those errors and make it usable for range estimation.
Precise Power Delay Profiling with Commodity Wi-Fi
• Computer Science
IEEE Transactions on Mobile Computing
• 2019
Splicer, a software-based system that derives high-resolution power delay profiles by splicing the CSI measurements from multiple WiFi frequency bands is presented and a set of key techniques to separate the mixed hardware errors from the collected CSI measurements are proposed.
RF-based inertial measurement
• Computer Science
SIGCOMM
• 2019
RIM turns a commodity WiFi device into an Inertial Measurement Unit (IMU) that can accurately track moving distance, heading direction, and rotating angle, requiring no additional infrastructure but a single arbitrarily placed Access Point (AP) whose location is unknown.
Analysis of Non-Intrusive Hand Trajectory Tracking by Utilizing Micro-Doppler Signature Obtained From Wi-Fi Channel State Information
• Computer Science
IEEE Access
• 2020
A human limb model was developed to simulate the deterministic movement of a hand gesture by exploiting the non-rigid motion of the robotic arm, and the hand Doppler signature could be successfully extracted from the spectrum with an error of less than 4 Hz at the 90th percentile of the CDF.
Comb Decoding towards Collision-Free WiFi
• Computer Science
NSDI
• 2020
This paper presents a new design called comb decoding (CombDec) to efficiently resolve RTS collisions without changing the 802.11 standard, and creates algorithms that carefully construct the search range for sparse recovery, making the complexity feasible for system design and implementation.
Et Tu Alexa? When Commodity WiFi Devices Turn into Adversarial Motion Sensors
• Computer Science
NDSS
• 2020
It is shown that just by sniffing existing WiFi signals, an adversary can accurately detect and track movements of users inside a building, made possible by a new signal model that links together human motion near WiFi transmitters and variance of multipath signal propagation seen by the attacker sniffer outside of the property.
TagRay: Contactless Sensing and Tracking of Mobile Objects using COTS RFID Devices
• Computer Science
IEEE INFOCOM 2020 - IEEE Conference on Computer Communications
• 2020
TagRay is presented, a contactless RFID-based sensing system, which significantly improves the tracking accuracy, enabling mobile object tracking and even material identification.
BreathTrack: Tracking Indoor Human Breath Status via Commodity WiFi
• Computer Science
IEEE Internet of Things Journal
• 2019
Extensive experiments are conducted to show that BreathTrack could estimate the breath rate with the median accuracy of over 99% in most scenarios, and could track the detailed status of breath directly using the raw phase variation.
Free Your CSI: A Channel State Information Extraction Platform For Modern Wi-Fi Chipsets
• Computer Science
WiNTECH@MOBICOM
• 2019
The nexmon CSI Extractor Tool allows per-frame CSI extraction for up to four spatial streams using up toFour receive chains on modern Broadcom and Cypress Wi-Fi chips with up to 80MHz bandwidth in both the 2.4 and 5GHz bands.