...
'IMT-2020',
...
better
...
known
...
as
...
5G,
...
is
...
implemented
...
in
...
SEAMCAT
...
according
...
to
...
the
...
specifications
...
outlined
...
in
...
Recommendation
...
ITU-R
...
M.2101
...
–
...
'Modelling
...
and
...
simulation
...
of
...
IMT
...
networks
...
and
...
systems
...
for
...
use
...
in
...
sharing
...
and
...
compatibility
...
studies'
...
\[ref\].
...
The
...
SEAMCAT
...
implementation
...
and
...
user
...
interface
...
for
...
IMT-2020
...
systems
...
is
...
similar
...
to
...
the
...
OFDMA
...
module.
...
The
...
main
...
differences
...
are
...
the
...
inclusion
...
of
...
different
...
system
...
types
...
(as
...
outlined
...
in
...
10.2
...
below)
...
and
...
the
...
use
...
of
...
beamforming
...
array
...
antennas,
...
also
...
known
...
as
...
active
...
antenna
...
systems
...
(as
...
outlined
...
in
...
10.6
...
below).
...
Unless
...
specified
...
otherwise
...
in
...
the
...
following
...
sections,
...
the
...
features
...
are
...
implemented
...
in
...
the
...
same
...
manner
...
as
...
for
...
OFDMA
...
systems
...
according
...
to
...
section
...
9.
...