Hardware Platform and Implementation of a Real-Time Multi-User MIMO-OFDM Testbed


Markus Wenk, Peter Luethi, Thomas Koch, Patrick Maechler, Michael Lerjen, Norbert Felber, and Wolfgang Fichtner


ISCAS 2009. IEEE International Symposium on Circuits and Systems, 2009., pp. 789-792, May 2009.

DOI: 10.1109/ISCAS.2009.5117872

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This paper describes a modular hardware platform of a multi-user (MU) multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) testbed. The hardware platform is based on multiple field programmable gate arrays (FPGAs), provides four integrated radio-frequency (RF) chains, and has capabilities for future extensions. The performance and modularity of the testbed enables real-time MU-MIMO-OFDM experiments as well as offline processing experiments. To this end, the MIMO physical (PHY) layer of Haene et al., IEEE J-SAC, 2008, has been adapted to the new hardware platform and extended with bi-directional communication facilities and a basic media access control (MAC) layer equipped with Ethernet (ETH) connectivity.

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