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The Role of Small Cells, Coordinated Multipoint, and Massive
MIMO in 5G.
Volker Jungnickel
and
Konstantinos Manolakis,
, Fraunhofer Heinrich Hertz Institute,
Wolfgang Zirwas
and
Berthold Panzner
, Nokia Solutions and Networks,
Volker Braun
, Alcatel Lucent Bell Labs,
Moritz Lossow
, Telekom Innovations Laboratories,
Mikael Sternad,
and
Rikke Apelfröjd,
, Uppsala University, and
Tommy Svensson
, Chalmers.
IEEE Communications Magazine
, vol. 52, no 5, May 2014, pp. 44-51.
© 2014 IEEE
Paper in Pdf
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Abstract:
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5G will have to support a multitude of new
applications with a wide variety of requirements,
including higher peak and user data rates,
reduced latency, enhanced indoor coverage,
increased number of devices, and so on. The
expected traffic growth in 10 or more years from
now can be satisfied by the combined use of
more spectrum, higher spectral efficiency, and
densification of cells.
The focus of the present
article is on advanced techniques for higher
spectral efficiency and improved coverage for
cell edge users. We propose a smart combination
of small cells, joint transmission coordinated
multipoint (JT CoMP), and massive MIMO to
enhance the spectral efficiency with affordable
complexity.
We review recent achievements in
the transition from theoretical to practical concepts
and note future research directions. We
show in measurements with macro-plus-smallcell
scenarios that spectral efficiency can be
improved by flexible clustering and efficient user
selection, and that adaptive feedback compression
is beneficial to reduce the overhead significantly.
Moreover, we show in measurements that
fast feedback reporting combined with advanced
channel prediction are able to mitigate the
impairment effects of JT CoMP.
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Related publications:
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PhD Thesis by Rikke Apelfröjd, 2018
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A tutorial (slides in pdf)
by M. Grieger TU Dresden, T. Svensson, CTH, M. Sternad UU and W. Zirwas, NSN on
Coordinated Multi-Point in Cellular Networks: From theoretical gains to realistic solutions and their potentials, at IEEE ICC 2013
and at IEEE ISWCS 2013.
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Paper at IEEE Trans. on Communications 2019 on
Joint reference signal design and
Kalman/Wiener channel estimation for FDD Massive MIMO.
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