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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

new CRAWDAD dataset - factory channel gain measurements - September 22, 2015

A new dataset has been added to CRAWDAD.

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

Measurement of the channel gain for multiple distances within a
factory environment.

If you do use these data, please let us know, and you can use the DOI
10.15783/C7N01X to do so. BibTeX and RIS are provided on the website.


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

and you can access the dataset at both

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
If you are interested in knowing more about DOIs then there is lots of
information at


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.

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.