Computer Networks and Distributes Systems University of Leipzig
University of Leipzig Department of Computer Science
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All Wireless Office MIMO Testbed
Raumplan
Floor plan of our office with an overview of the positions of the wireless nodes.


By approving the new IEEE 802.11n standard in september 2009, for the first time MIMO technology is used in IEEE 802.11. The usage of multiple antennas provides many advantages in real-life wireless communication. Not only the possible data rate is raised to up to 600 Mbit/s but also quality and maximum range of a transmission is considerably increased. In todays hardware two main methods are used: spatial multiplexing and spatial diversity. While the first one provides a theoretical data rate gain linear to the number of antennas, the second one dramatically improves receiption characteristics.

The performance of current MAC- and routing layer procedures suffer tremendously under 802.11n. Therefore, the goal of the All Wireless Office MIMO Testbed is to evaluate current procedures and protocols under 802.11n and to advance them to optimal utilize the new MIMO features.
 Two testbed nodes
Two testbed nodes equipped with 802.11n wireless LAN cards
For this purpose the All Wireless Office MIMO Testbed, consisting of 20 nodes was installed in the offices of our chair to form a representative indoor environment. We use a modified version of the Linux kernel to operate in the ad hoc modus and to conduct multihop experiments in this new promising standard.

For further information, please contact Prof. Dr.-Ing. Christoph Lindemann.