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COSMOS

Experiments that run on the ORBIT/COSMOS testbed.
Passive sniffing in 802.11 networks
Network security

Passive sniffing in 802.11 networks

In this experiment, we will observe the level of confidentiality provided by three kinds of WiFi networks - an open WiFi network, a WEP network, and a WPA network. You will have to download and install Wireshark to run this experiment. You should do this before your reservation on the
04 Apr 2018 12 min read
Channel planning in 802.11: understanding the effect of nearby networks
Wireless communication

Channel planning in 802.11: understanding the effect of nearby networks

When neighboring 802.11 networks operate on the same channel, they compete with one another to use the shared medium. In this experiment, you will observe the effect on throughput when neighboring cells operate on the same channel vs. on non-interfering channels. It should take about 2 hours to run
20 Mar 2017 13 min read
Nyquist formula: relating data rate and bandwidth
Wireless communication

Nyquist formula: relating data rate and bandwidth

This experiment looks at the relationship between data transmission rate, bandwidth, and modulation scheme, as described by the Nyquist formula. It should take about 60-120 minutes to run this experiment, but you will need to have reserved that time in advance. This experiment uses wireless resources (either the sb3 or
13 Feb 2017 8 min read
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