English
资源说明：Multiple-input multiple-output (MIMO)
communication techniques have been an
important area of focus for next-generation
wireless systems because of their potential for
high capacity, increased diversity, and interference
suppression. For applications such as
wireless LANs and cellular telephony, MIMO
systems will likely be deployed in environments
where a single base must communicate
with many users simultaneously. As a result,
the study of multi-user MIMO systems has
emerged recently as an important research
topic. Such systems have the potential to combine
the high capacity achievable with MIMO
processing with the benefits of space-division
multiple access. In this article we review several
algorithms that have been proposed with
this goal in mind. We describe two classes of
solutions. The first uses a signal processing
approach with various types of transmitter
beamforming. The second uses “dirty paper”
coding to overcome the interference a user
sees from signals intended for other users. We
conclude by describing future areas of research
in multi-user MIMO communications.
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