Main Content


Close-in propagation model


Model the behavior of electromagnetic radiation from a point of transmission as it travels through urban macro cell scenarios [1] by using a CloseIn object. Close-in propagation models have no enforced frequency range.


Create a CloseIn object by using the propagationModel function.


expand all

Free-space reference distance, specified as a scalar in meters.


The close-in model is valid for distances greater than or equal to the ReferenceDistance. Path loss is 0 for distances less than ReferenceDistance.

Data Types: double

Path loss exponent, specified as a scalar.

Data Types: double

Standard deviation of the zero-mean Gaussian random variable, specified as a scalar in decibels (dB).

Data Types: double

Number of data points of the zero-mean Gaussian random variable, specified as an integer.

Data Types: double

Object Functions

pathlossPath loss of radio wave propagation
rangeRange of radio wave propagation
addAdd propagation models


collapse all

Display the coverage area for a transmitter using the close-in propagation model.

pm = propagationModel("close-in");
tx = txsite("Name","Apple Hill","Latitude",42.3001,"Longitude",-71.3604);


[1] Sun, Shu, Theodore S. Rappaport, Timothy A. Thomas, Amitava Ghosh, Huan C. Nguyen, Istvan Z. Kovacs, Ignacio Rodriguez, Ozge Koymen, and Andrzej Partyka. “Investigation of Prediction Accuracy, Sensitivity, and Parameter Stability of Large-Scale Propagation Path Loss Models for 5G Wireless Communications.” IEEE Transactions on Vehicular Technology 65, no. 5 (May 2016): 2843–60.

Introduced in R2019b