% Run OFDM simulation

tic	% Start stopwatch to calculate how long QAM simulation takes
disp(' '),disp('------------------------------------------------------------')
disp('OFDM Simulation')


tx
ch
OFDM_SNR=snr;
rx

% Stop stopwatch to calculate how long QAM simulation takes
OFDM_simulation_time = toc;
if OFDM_simulation_time > 60
	disp(strcat('Time for OFDM simulation=', num2str(OFDM_simulation_time/60), ' minutes.'));
else
	disp(strcat('Time for OFDM simulation=', num2str(OFDM_simulation_time), ' seconds.'));
end