1 12/15/2015 1 diversitytools for satenv. presentation of tools 1. antenna correlation tool passive...
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DIVERSITY DIVERSITY tools tools
for Satenv for Satenv
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Presentation of toolsPresentation of tools
1. Antenna correlation tool• passive measurement• calculates the correlation between two complex antenna patterns
2. Cumulative distribution tool• Active measurement of a device with diversity function• Calculates the Cumulative Distribution Function (CDF) of measured data• Compare how this CDF is evolving when diversity is switched off and then
switched on
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Antenna correlation toolAntenna correlation tool
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ProcedureProcedure
Connect cable to antenna 1 and measure in SatenvConnect cable to antenna 1 and measure in Satenv
node of measurement 1 is creatednode of measurement 1 is created
Connect cable to antenna 2 and measure in SatenvConnect cable to antenna 2 and measure in Satenv
node of measurement 2 is creatednode of measurement 2 is created
Run macro to calculate the envelope correlation Run macro to calculate the envelope correlation coefficientcoefficient
a correlation node is created in Satenva correlation node is created in Satenv
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Correlation formulasCorrelation formulas
Correlation function between two antenna radiation pattern
Envelope correlation coefficient
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Macro interfaceMacro interface
Node 1
Node 2
Correlation
parameters• XPR• Phi distribution• Theta distribution
Press start button to create the coreelation function node in Satenv
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Correlation parametersCorrelation parameters
Caracterize the antenna environment• Library included
XPR is related to the polarization
Phi distribution and Theta distribution are related to the antenna pattern
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Plot of envelope correlation coefficient Vs frequencyPlot of envelope correlation coefficient Vs frequency
Computed coefficient can be viewed as asymptotic performances a multiple antenna system may achieve compared to a single antenna system.
The more the antennas of the system are correlated, the less diverse information they provide.
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Cumulative distribution toolCumulative distribution tool
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ProcedureProcedure
Measure TIS with diversity OFFMeasure TIS with diversity OFF
EIS data node 1 is createdEIS data node 1 is created
Measure TIS with diversity OnMeasure TIS with diversity On
EIS data node 2 is createdEIS data node 2 is created
Run macro to calculate CDF functionsRun macro to calculate CDF functions
A CDF node is created in SatenvA CDF node is created in Satenv
compare the 2 CDF function to compare the 2 CDF function to quantify the diversity gainquantify the diversity gain
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Macro interfaceMacro interface
Node 1, Node 2
Layer
(Etotal)
Possibility to calculate the CDF for different frequencies
Press go to calculate
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Plot CDF in SatenvPlot CDF in Satenv
CDF node is created in Satenv
Plot of the CDF function• Number of EIS values less than a given threshold
Diversity On
Diversity Off