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Welcome to CRAWDAD

CRAWDAD is the Community Resource for Archiving Wireless Data At Dartmouth, a wireless network data resource for the research community. This archive has the capacity to store wireless trace data from many contributing locations, and staff to develop better tools for collecting, anonymizing, and analyzing the data. We work with community leaders to ensure that the archive meets the needs of the research community.

CRAWDAD is grateful to its current and past sponsors.

 

Latest News

DOIs for CRAWDAD datasets - August 27, 2015

Hello CRAWDAD users,

It is now possible to cite datasets using DOIs (Digital Object
Identifiers). These increasingly popular persistent identifiers should
provide stable citation references for use in your papers when you use
CRAWDAD datasets. They should also help with anyone who is thinking of
contributing data to CRAWDAD, since some funding bodies now require
that datasets have DOIs.

So for instance you can now cite the latest version of the
dartmouth/campus dataset as follows:

David Kotz, Tristan Henderson, Ilya Abyzov, Jihwang Yeo, CRAWDAD
dataset dartmouth/campus (v. 2009‑09‑09), downloaded from
dartmouth/campus20090909, doi:10.15783/C7F59T, Sep
2009.

and you can access the dataset at both
dartmouth/campus20090909/>
and
http://doi.org/10.15783/C7F59T

We also now provide both BibTeX and RIS so that both LaTeX and Word
users can cite CRAWDAD datasets easily and accurately. If you are
interested in knowing some common data citation errors, and why it is
important to cite data correctly, then you might want to see the
article that we wrote for D-Lib Magazine
http://doi.org/10.1045/january2015-henderson
If you are interested in knowing more about DOIs then there is lots of
information at http://www.doi.org/

Cheers,
Tristan

PS it took a while for me to get my head around the issuing (or
"minting") of DOIs. So if you notice any weirdness then please shout.

new CRAWDAD dataset - ISM channel gain measurements - July 07, 2015

A new dataset has been added to CRAWDAD.
init/robotarm

Time- and frequency-variant 2.4 GHz ISM band channel gain

Contributed by Dimitri Block, Niels Hendrik Fliedner, Daniel Toews,
Uwe Meier.

The time- and frequency-variant channel gain is measured in the
presence of an industrial cyclic moving robot arm obstacle for four
coexisting wireless nodes for the whole license-free 2.4-GHz-ISM band
with a time- and frequency-resolution of 110 microsseconds and 1 MHz,
respectively. Results for two links are given.

Cheers,
Tristan

two new CRAWDAD datasets - HTTP measurements over 802.11, 3G and LTE - June 19, 2015

Two new datasets have been added to CRAWDAD.

kyutech/interference
Measurements of HTTP requests over 802.11 in dense wireless classrooms

and

kyutech/throughput
Measurements on real HTTP throughput via several 3G/LTE providers in
Japan

These datasets were contributed by Marat Zhanikeev. Thank you for your
contribution.

Cheers,
Tristan