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Eliminating the Barriers: Demystify Wi-Fi Baseband Design And Introduce PicoScenes Wi-Fi Sensing Platform | | Zhiping Jiang
; Tom H. Luan
; Han Hao
; Jing Wang
; Xincheng Ren
; Kun Zhao
; Wei Xi
; Yueshen Xu
; Rui Li
; | | Date: |
20 Oct 2020 | | Abstract: | Research on Wi-Fi sensing over the past decade has been thriving, but not
smooth. Three major barriers severely hamper the research, namely, the unknown
baseband design and its influence on CSI, inability to access the low-level
hardware controls and the lack of a flexible and versatile software toolkit for
hardware control. This paper tries to break the above three barriers from the
following aspects. First, an in-depth study on the baseband design of QCA9300,
the popular CSI-enabled Wi-Fi NIC, is presented. The lessons learned is of
great guiding significance for understanding what other commercial
off-the-shelf NICs. Second, several valuable features of QCA9300 are unlocked
for research, such as the arbitrary tuning for both the carrier frequency and
baseband sampling rate. By leveraging the unlocked features, we identify three
important types of CSI distortion, and pinpoint their origin through extensive
evaluations. Last, we develop and release PicoScenes, a powerful,
hardware-unified and extensible Wi-Fi sensing system. PicoScenes allows direct
access to the unlocked features of QCA9300 and IWL5300, and therefore greatly
facilitate the research on Wi-Fi sensing. It also supports the SDR-based Wi-Fi
sensing by embedding a 802.11a/g/n/ac/ax software baseband implementation. We
release PicoScenes at this https URL. | | Source: | arXiv, 2010.10233 | | Services: | Forum | Review | PDF | Favorites | |
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