Traditional works rely on the use of complete Channel State Information
(CSI) at the base station to take space-time scheduling
decisions in the uplink of multi-user MIMO wireless systems.
However, this might be a complex and costly solution.
On the other hand, the simplest scheduler is the Round Robin
(RR) scheduler that schedules terminals one after the other
without using CSI. However, when multiple antennas are used,
many terminals could be simultaneously scheduled because of
the additional spatial dimension. The optimal number of terminals
to be scheduled by a space-time scheduler with no CSI
in a multi-user SIMO system is investigated in this paper. Furthermore,
we also study how spatial diversity and multiplexing
gains are translated into throughput gains. In particular, when
a ZF receiver is used, we show that the benefits of using multiple
antennas increase with the minimum SNIR requirements
and that, when the number of antennas is much higher than the
number of terminals, the throughput gains due to multiplexing
increase linearly with the number of terminals and exponentially
with the minimum SNIR requirements.
CitationREALP, M.; Pérez, A. Throughput gains of space-times scheduling with no CSI. A: PIMRC'07. "PIMRC'07". Atenas: 2007, p. 1-8.
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