Use CCDF to find probability for specified relative power
Find Relative Power for Specified Probability
Compute the average power measurement of the generated voltage signal.
x = complex(rand(10000,1)-0.5,rand(10000,1)-0.5); pm = powermeter(ComputeCCDF=true); averagePower = pm(x); % power in dB
Compute the probability that the instantaneous power of the signal is 3 dB above the average power.
prob = probability(pm,3) % probability in percentage
prob = 7.6009
Plot the CCDF curve.
Find the relative power for the given probability.
relativepwr = relativePower(pm,prob)
relativepwr = 3.0000
relpower — Relative power
Relative power in dB, specified as a column vector.
prob — Probability
Probability in percentage, returned as an
N-by-M matrix. The probability that the
instantaneous signal power of the jth
channel is above its average signal power by
relpower(i,j), in dB, is
prob(i)/100. N equals the
number of rows in
relpower and M equals the
number of signals provided to the
PowerRange property is not set sufficiently large, the computed CCDF curve
may not reach some relative power values in
relpower and the
corresponding values in
Introduced in R2022a