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dc.contributor.authorGringoli, Francesco
dc.contributor.authorCominelli, Marco
dc.contributor.authorBlanco, Alejandro 
dc.contributor.authorWidmer, Joerg
dc.description.abstractChannel state information (CSI) is paramount to modern Wi-Fi communication systems, as it allows for proper equalization of frames at the receiver side and enables advanced signal processing techniques such as beamforming and MIMO. Given that the CSI can accurately mirror physical changes in the wireless channel, CSI analysis has become a valuable resource to many wireless sensing applications based on the opportunistic use of Wi-Fi signals. Since CSI can usually not be accessed by users directly, several CSI extraction tools have been published over the last few years for various Wi-Fi chipsets. In this paper, we present the first system ever capable of extracting CSI from 802.11ax consumer devices using the Broadcom 43684 Wi-Fi chipset. This platform can extract up to 160 MHz-wide CSI using 4x4 MIMO, and it is compatible with the latest HE PHY. We make our CSI extraction tool available to the research community to foster further work on this emerging
dc.titleAX-CSI: Enabling CSI extraction on commercial 802.11ax Wi-Fi platformses
dc.typeconference objectes
dc.conference.date4 February 2022es
dc.conference.placeNew Orleans, United Stateses
dc.conference.titleACM Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization (ACM WiNTECH), held in conjunction with ACM MobiCom*
dc.rights.accessRightsopen accesses

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