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How can you block WIFI signals? 

Transmission (telecommunications)
Communications system
Mobile device
Wireless
Cyclic prefix

Answers from top 10 papers

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Papers (10)Insight
Proceedings Article•DOI
BackFi: High Throughput WiFi Backscatter
Dinesh Bharadia, Kiran Joshi, Manikanta Kotaru, Sachin Katti 
17 Aug 2015
418 Citations
Specifically, we show that it is possible to design devices and WiFi APs such that the WiFi AP in the process of transmitting data to normal WiFi clients can decode backscatter signals which the devices generate by modulating information on to the ambient WiFi transmission.
Open access•Proceedings Article•DOI
Detecting human encounters from WiFi radio signals
Geert Vanderhulst, Afra Mashhadi, Marzieh Dashti, Fahim Kawsar 
30 Nov 2015
25 Citations
We propose the use of WiFi probes, management frames of WiFi, that periodically radiate from mobile devices (as proxies for humans), and existing WiFi access points to automatically capture radio signals and detect human copresence.
Proceedings Article•DOI
WiDraw: Enabling Hands-free Drawing in the Air on Commodity WiFi Devices
Li Sun, Souvik Sen, Dimitrios Koutsonikolas, Kyu-Han Kim 
07 Sep 2015
271 Citations
This paper demonstrates that it is possible to leverage WiFi signals from commodity mobile devices to enable hands-free drawing in the air.
Proceedings Article•DOI
Supporting WiFi and LTE co-existence
Sangki Yun, Lili Qiu 
24 Aug 2015
86 Citations
Our approach leverages LTE and WiFi antennas already available on smartphones to let LTE and WiFi transmit together and successfully decode the interfered signals.
Open access•Posted Content
Towards LTE-U Interference Detection, Assessment and Mitigation in 802.11 Networks using Commodity Hardware
Michael Olbrich, Anatolij Zubow, Sven Zehl, Adam Wolisz 
13 Feb 2017-arXiv: Networking and Internet Architecture
2 Citations
We propose WiPLUS -- a system that enables WiFi to deal with the stealthy invasion of LTE-U into the frequency bands used by WiFi.
Proceedings Article•DOI
Malicious WiFi networks: A first look
Andrew Zafft, Emmanuel Agu 
01 Oct 2012
18 Citations
In the end, we found no strong correlation between WiFi insecurity rates and blacklisting rates, which we attribute to inadequate education of the inhabitants of cities on how to report malicious activity so that perpetuators can be blacklisted.
Proceedings Article•DOI
On cyclostationary analysis of WiFi signals for direction estimation
Changlai Du, Huacheng Zeng, Wenjing Lou, Y. Thomas Hou 
08 Jun 2015
14 Citations
Simulation results show that the pilot-induced cyclostationary property of WiFi signals is a promising feature that can be used to solve the SSDE problem.
Open access•Journal Article•DOI
Interference cancellation schemes for single-carrier block transmission with insufficient cyclic prefix
Kazunori Hayashi, Hideaki Sakai 
01 Jan 2008-Eurasip Journal on Wireless Communications and Networking
10 Citations
The proposed scheme at the transmitter can exterminate the interferences by only setting some signals in the transmitted signal block to be the same as those of the previous transmitted signal block.
Open access•Journal Article•DOI
Recognizing Keystrokes Using WiFi Devices
Kamran Ali, Alex X. Liu, Wei Wang, Muhammad Shahzad 
09 Mar 2017-IEEE Journal on Selected Areas in Communications
93 Citations
In this paper, we show for the first time that WiFi signals can also be exploited to recognize keystrokes.
Open access•Proceedings Article•DOI
WiFi-ID: Human Identification Using WiFi Signal
Jin Zhang, Bo Wei, Wen Hu, Salil S. Kanhere 
26 May 2016
214 Citations
In this paper, we show for the first time WiFi signals can also be used to uniquely identify people.

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