Multiuser MIMO: Principle, Performance in Measured Channels and Applicable Service

—The exploitation of multiuser diversity and the application of multiple antennas at transmitter and receiver are considered to be key technologies for future highly bandwidthefficient wireless systems. We combine both ideas in a downlink multicarrier transmission scheme where multiple users compete for the available resources in time, frequency and space. The instantaneous channel impulse responses for all users are assumed to be perfectly known at the transmitter. Our proposed algorithm allocates each spatial dimension on a subcarrier to the user which has the highest channel tap gain on the respective spatial dimension. The scheduling strategy is optimized for sum capacity maximization. In this paper, we restrict ourselves to a more illustrative description of the idea rather then providing mathematical details. We demonstrate the potential of the proposed scheme by capacity results for measured real world channels in a large office environment. Finally, video streaming is used as...

• Type: Conference
• Year: 2007
• Where: VTC
• Authors: Gerhard Bauch, Pedro Tejera, Christian Guthy, Wolfgang Utschick, Josef A. Nossek, Markus Herdin, Jorgen Nielsen, Jørgen Bach Andersen, Eckehard G. Steinbach, Shoaib Khan
• Keywords: Multicarrier Transmission Scheme, Multiuser Diversity, Spatial Dimension, VTC 2007