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Tutorial Paper
- Orthogonal Frequency Division Multiple Access
: Is it the Multiple Access System of the Future?
Srikanth S., Kumaran V. , Manikandan C., Murugesapandian.
There is significant interest worldwide
in the development of technologies for broadband cellular
wireless (BCW) systems. One of the key technologies
which is becoming the de-facto technology for use in
BCW systems is the orthogonal frequency division multiple
access (OFDMA) scheme. In this tutorial article, we
discuss the reasons for the popularity of OFDMA and
outline some of the important concepts which are used
in OFDMA as applied to BCW systems. We shall use the
IEEE 802.16 based WiMAX standards for highlighting some
of the significant ideas in the practical use of OFDMA
systems.
[Download]
Technical Reports
- A report on the “Design and Implementation
of an Open Source Software/Tools based Wi-Fi security test
bed”
Securing the Wi-Fi wireless communication
networks is very important, as it is highly susceptible
to attacks and is challenging. To enable security in
WiFi, one has to appropriately configure the various
elements of the network with suitable software / tools.
We have set up an open source software / tools based
Wi-Fi security test bed. The various security mechanisms
based on IEEE 802.1x and EAP methods such as EAPTTLS,
PEAP, TLS, MD5 and WPA PSK were installed and configured
on RADIUS server, wireless client and Access Point (AP).
Atheros AP and client cards were used in our setup.
The open source software used includes FreeRADIUS, WPA-Supplicant,
MADWIFI and Wireshark. The results of our experiments,
captured on the wired and wireless side, are presented.
[Download]
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