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
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
or as a transmitter site object. When the signal source of interest is
'strongest', the transmitter with the greatest
signal strength is chosen as the signal source of interest for that
location. When computing
SignalSource can be a
array with equal number of elements
rxs where each
transmitter site element defines the signal source for the corresponding
'PropagationModel'— Propagation model to use for path loss calculations
'longley-rice'| propagation model object
Propagation model to use for path loss calculations, specified as
'longley-rice', or as
an object created using the
'ReceiverNoisePower'— Total noise power at receiver
-107(default) | scalar
Total noise power at receiver, specified as 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 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 using
'ReceiverAntennaHeight'— Receiver antenna height
1(default) | scalar
Receiver antenna height above the ground, specified as a scalar in
meters. If you call the function using an output argument, the default
value is computed using
'Map'— Map for surface data
siteviewerobject | terrain name
'Values'— Values of SINR for display
[-5:20](default) | numeric vector
Values of SINR for display, specified as 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 SINR map from each transmitter site
Maximum range of the SINR map from each transmitter site, specified as
a positive numeric scalar in meters representing a great circle
distance. This property defines the region of interest on the map to
plot. If the
'Map' is a siteviewer object with
'Buildings' specified, the default value is the
distance to the farthest building. Otherwise, the default value is 30000
m or 30 km.
When using terrain, the
MaxRange limit is
'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,
'auto' or a numeric scalar in meters.
The resolution defines the maximum distance between the locations. If
the resolution is
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 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 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
'Transparency'— Transparency of SINR map
0.4(default) | numeric scalar
Transparency of SINR map, specified as 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.