Remcom’s XFdtd and Wireless InSite: Advanced Tools for Advanced Communication Systems Analysis
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Transcript of Remcom’s XFdtd and Wireless InSite: Advanced Tools for Advanced Communication Systems Analysis
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WiMax System Analysis Using
XFdtd® and Wireless InSite ®
Kyle L. Labowski
Joseph J. Rokita
Modern Communication Systems
Network • LTE, WiMax, etc.
networks require consideration for coverage and capacity
• May require modification for special events or moving/shifting populations
• Intended coverage for normal, “Business Day” operation
• Intended coverage for “Special Event” operation
Antenna Array Modeling in XFdtd
• Circular array of dipoles
• Phase between elements
set based upon:
– Number of elements
– Width of array
– Desired main beam
direction
• “Design and optimization
of an antenna array for
WiMax base stations”
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
Antenna Array Modeling in XFdtd
• Circular array of
dipoles
• Element phase
– Proper Phasing
between elements
creates directionality
– Allows electronically
steering of beam
direction
XFdtd: Parameterization
• Parameters • Equations
• Math functions
• Units
• Auto completes
previously used
parameters
XFdtd: XACT® Mesh Coarse Mesh 80.9 MB
Fine Mesh 160.2 MB
XACT Mesh 86.5 MB
XFdtd: Parameter Sweep
• The feed points can be parameterized and a
sweep performed to quickly iterate through
various configurations and beam patterns.
Single Parameter Sweep Multiple Parameter Sweep
XFdtd: Modeling Beam Steering
No Phase Offset Main Beam Phi = 0
Main Beam Phi = 180 Main Beam Phi = 270
XFdtd: XStream GPU Acceleration
• XStream®, Remcom’s GPU acceleration
technology, allows each simulation to be
performed at a fraction of the time needed
using CPUs only.
XFdtd: XStream GPU Acceleration
XFdtd: Generate Optimal Far-Zone Patterns
XFdtd: Export Far-Zone Pattern
• Once modeling the antenna array is completed
using XFdtd, the sample far-zone patterns can
be sent to Wireless InSite to analyze in-situ
performance.
Transfer Far-Zone Pattern from
XFdtd to Wireless InSite • Once modeling the antenna
array is completed using XFdtd,
the sample far-zone patterns
can be sent to Wireless InSite
to analyze in-situ performance.
Analyze Array Performance Using
Wireless InSite • Wireless InSite can be
used to determine coverage and throughput for different configurations of antenna pattern.
• The WiMax carrier wishes to provide coverage for the hi-rise section of the city during normal working hours.
• The beam can be shifted to provide better coverage for the stadium during football games and other events without modifying any physical installation.
Wireless InSite: Import Terrain
• Start by importing
terrain
Wireless InSite: Import Terrain
• Start by importing terrain
• Can be flat, irregular,
or imported from a
DTED or DEM
database
Wireless InSite: Import 3D Building
Data • Import 3D
building (“city”)
data
• Can be obtained
from DXF or ESRI
shapefiles
• In this case, we
have a model of
part of the city of
Chicago, as well
as Soldier Field.
Wireless InSite: Import 3D Building
Data • Import 3D
building (“city”)
data
• Can be obtained
from DXF or ESRI
shapefiles
• In this case, we
have a model of
part of the city of
Chicago, as well
as Soldier Field.
Wireless InSite: Place Transmitters
and Receivers
Wireless InSite: Place Transmitters
and Receivers
Wireless InSite: Place Transmitters
and Receivers
Wireless InSite: Assign Waveform
and Run Simulation
• Assign desired waveform
• Run simulation using Full
3D propagation model
Wireless InSite: XStream 3D
Acceleration (V 2.6)
• New XStream 3D model can utilize GPU technology
to enhance calculation speed
• Take-away: 2-19x speed-up
(30 Faces) (1,000 Faces) (5,200 Faces)
Wireless InSite: XStream 3D
Acceleration (V 2.6)
• New XStream 3D model can utilize GPU technology
to enhance calculation speed
• Take-away: Hours Minutes
(30 Faces) (1,000 Faces) (5,200 Faces)
Wireless InSite: Quickly Obtain
Results • Iterate quickly to
determine the
optimal
configuration
• The best beam-formed
far-zone pattern
provides coverage for
each scenario
Wireless InSite: Data Throughput
Analysis (Rel. 2.6)
• Throughput
toolbox
provides
analysis for
LTE and WiMax
configurations
Wireless InSite: Data Throughput
Analysis
• Coverage for
Business Hours
• Coverage for
Stadium Event
Summary
• XFdtd and Wireless InSite can be used to model the device as placed into a Communications System Network.
• Advanced features speed iterations, to allow engineers to rapidly optimize the network with minimal disruptions.
Read more about XFdtd and Wireless InSite,
watch videos, and download this presentation at:
www.remcom.com/mtt-ims-2011
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www.remcom.com 1-814-861-1299