Display signal-to-interference-plus-noise ratio (SINR) map
sinr( displays the
signal-to-interference-plus-noise ratio (SINR) for transmitter sites,
txs. Each colored contour of the map defines the areas where
the corresponding SINR is available to a mobile receiver. For each location, the
signal source is the transmitter site in
txs with the greatest
signal strength. The remaining transmitter sites in
txs act as
txs is scalar, or there are no sources of
interference, the resultant map displays signal-to-noise ratio (SNR).
properties using one or more name-value pairs, in addition to the input arguments in
previous syntaxes. For example,
the range from the site location at 8000 meters to include in the SINR map
computed SINR data in the propagation data object,
pd = sinr(txs,___)
pd. No plot is
displayed and any graphical only name-value pairs are ignored.
Define names and location of sites in Boston.
names = ["Fenway Park","Faneuil Hall","Bunker Hill Monument"]; lats = [42.3467,42.3598,42.3763]; lons = [-71.0972,-71.0545,-71.0611];
Create a transmitter site array.
txs = txsite('Name', names,... 'Latitude',lats,... 'Longitude',lons, ... 'TransmitterFrequency',2.5e9);
Display the SINR map, where signal source for each location is selected as the transmitter site with the strongest signal.
txs— Transmitter sites
txsiteobject | array of
Transmitter site, specified as a
txsite object. Use array inputs to specify
rxs— Receiver sites
rxsiteobject | array of
Receiver site, specified as a
rxsite object. Use array inputs to specify
propmodel— Propagation model
Propagation model, specified as a character vector or string. You can use
propagationModel function to define this
You can also use the name-value pair
to specify this parameter.
comma-separated pairs of
the argument name and
Value is the corresponding value.
Name must appear inside quotes. You can specify several name and value
pair arguments in any order as
'SignalSource'— Signal source of interest
'strongest'(default) | transmitter site object
Signal source of interest, specified as the comma-separated pair
'strongest' or as a transmitter site object. When
the signal source of interest is
transmitter with the greatest signal strength is chosen as the signal
source of interest for that location. When computing
SignalSource can be a
txsite array with equal number of elements
rxs where each transmitter site element defines
the signal source for the corresponding receiver site.
'PropagationModel'— Propagation model to use for path loss calculations
'raytracing-image-method'| propagation model object
Propagation model to use for the path loss calculations, specified as
the comma-separated pair consisting of
'raytracing-image-method', or as an object
created using the
propagationModel function. The
default propagation model is
terrain is enabled and
'freespace' when terrain is
'raytracing-image-method' is specified,
the value of
'MaxNumReflections' property must be
lesser than 1.
'ReceiverNoisePower'— Total noise power at receiver
-107(default) | scalar
Total noise power at receiver, specified as the comma-separated pair
'ReceiverNoisePower' and a scalar in
dBm. The default value assumes that the receiver bandwidth is 1 MHz and
receiver noise figure is 7 dB.
N = Receiver noise in dBm
B = Receiver bandwidth in Hz
F = Noise figure in dB
'ReceiverGain'— Receiver gain
2.1(default) | scalar
Mobile receiver gain, specified as the comma-separated pair consisting
'ReceiverGain' and a scalar in dB. The receiver
gain values include the antenna gain and the system loss. If you call
the function using an output argument, the default value is computed
'ReceiverAntennaHeight'— Receiver antenna height
1(default) | scalar
Receiver antenna height above the ground, specified as the
comma-separated pair consisting of
'ReceiverAntennaHeight' and a scalar in meters.
If you call the function using an output argument, the default value is
'Map'— Map for visualization or surface data
siteviewerobject | terrain name
Map for visualization or surface data, specified as the comma-separated pair
'Map and a
siteviewer object or a terrain name. A terrain name may be specified if
the function is called with an output argument. Valid terrain names are
'gmted2010', or the name of the custom
terrain data added using
addCustomTerrain. The default value is the current Site Viewer. If no
Site Viewer is open, the default value is a new Site Viewer or else
'gmted2010' if the function is called with an output
'Values'— Values of SINR for display
[-5:20](default) | numeric vector
Values of SINR for display, specified as the comma-separated pair
'Values' and a numeric vector. Each
value is displayed as a different colored, filled on the contour map.
The contour colors are derived using
'MaxRange'— Maximum range of coverage map from each transmitter site
Maximum range of coverage map from each transmitter site, specified as
a positive numeric scalar in meters representing great circle distance.
MaxRange defines the region of interest on the
map to plot. The default value is automatically computed based on the
propagation model type as shown:
|Basic or urban|
'Resolution'— Resolution of receiver site locations used to compute SINR values
'auto'(default) | numeric scalar
Resolution of receiver site locations used to compute SINR values,
specified as the comma-separated pair consisting of
'auto' or a
numeric scalar in meters. The resolution defines the maximum distance
between the locations. If the resolution is
sinr computes a value scaled to
MaxRange. Decreasing the resolution increases the
quality of the SINR map and the time required to create it.
'Colormap'— Colormap for coloring filled contours
'jet'(default) | M-by-
3array of RGB triplets
Colormap for coloring filled contours, specified as the
comma-separated pair consisting of
'ColorMap' and an
3 array of RGB triplets,
where M is the number of individual colors.
'ColorLimits'— Color limits for color maps
[-5 20](default) | two-element vector
Color limits for color maps, specified as the comma-separated pair
'ColorLimits' and a two-element vector
of the form [min max]. The color limits indicate the SINR values that
map to the first and last colors in the colormap.
'ShowLegend'— Show signal strength color legend on map
Show signal strength color legend on map, specified as the
comma-separated pair consisting of
'Transparency'— Transparency of SINR map
0.4(default) | numeric scalar
Transparency of SINR map, specified as the comma-separated pair
'Transparency' and a numeric scalar in
the range 0–1. If the value is zero, the map is completely transparent.
If the value is one, the map is completely opaque.
r— Signal to interference plus noise ratio at the receiver
Signal to interference plus noise ratio at the receiver due to the transmitter sites, returned as a numeric vector. The vector length is equal to the number of receiver sites.
pd— SINR data
SINR data, returned as a
consisting of Latitude and Longitude,
and a signal strength variable corresponding to the plot type. Name of the