berconfint

Compute the confidence interval for the simulation of a communication system that has 100 bit errors in 106 trials. The bit error rate (BER) for that simulation is ${10}^{-4}$.

Compute the 90% confidence interval for the BER of the system. The output shows that, with 90% confidence level, the BER for the system is between 0.0000841 and 0.0001181.

nerrs = 100;    % Number of bit errors in simulation
ntrials = 10^6; % Number of trials in simulation
level = 0.90;   % Confidence level
[ber,interval] = berconfint(nerrs,ntrials,level)

ber = 
1.0000e-04

interval = 1×2
10-3 ×

    0.0841    0.1181

For an example that uses the output of the berconfint function to plot error bars on a BER plot, see Use Curve Fitting on Error Rate Plot.