Talks and Poster Presentations (with Proceedings-Entry):

S. Schwarz, R. W. Heath, M. Rupp:
"Multiuser MIMO in Distributed Antenna Systems with Limited Feedback";
Talk: IEEE Global Communications Conference (GLOBECOM 2012), Anaheim, California, USA; 12-03-2012 - 12-07-2012; in: "Proceedings of the IEEE Global Telecommunications Conference 2012", IEEE, (2012).

English abstract:
Augmenting the central antennas of a cellular base
station with remote radio units (RRUs) has the potential of
providing more uniform coverage of the area served by the
base station. In distributed antenna systems (DASs) these RRUs
are connected to the base station via high bandwidth and low
latency links, enabling coherent transmission from potentially all
available antennas at the same time. Prior work has identified
multiuser transmission over the entire distributed antenna array
as a promising technique. In this work, we demonstrate the
viability of zero forcing multiuser MIMO DASs with perfect
channel state information (CSI) at the transmitter (CSIT) in
an LTE simulation framework. Furthermore, the impact of
imperfect CSIT, obtained via limited feedback, on the achievable
transmission rates is investigated. Specifically, we modify
previously derived feedback algorithms to exploit the large scale
fading differences inherently existing in DASs.

Distributed antenna systems, remote radio units, channel state information estimation, limited feedback communication, quantized feedback, multiuser MIMO, LTE, OFDMA

Created from the Publication Database of the Vienna University of Technology.