how to vary the transmit power among user equipment with distance in matlab

You can vary the transmit power among user equipment with distance by implementing a path loss model and adjusting the transmit power based on the distance. Here is a simple example in MATLAB:

main.m
% Define parameters
transmitPower = 1; % Initial transmit power
maxDistance = 100; % Maximum distance
distance = 1:1:maxDistance; % Distance range
pathLossExponent = 2; % Path loss exponent

% Calculate path loss
pathLoss = (distance.^pathLossExponent);

% Vary transmit power based on distance
transmitPower = transmitPower ./ pathLoss;

% Plot the results
figure;
plot(distance, transmitPower);
xlabel('Distance');
ylabel('Transmit Power');
title('Transmit Power vs Distance');
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In this example, the transmit power decreases as the distance increases based on the path loss model. You can adjust the parameters and the path loss model based on the specific wireless communication scenario you are simulating.

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