Relative power in dB, returned as an N-by-M
matrix. M equals the number of columns in the signals provided and
N equals ceil(PowerRange/PowerResolution) + 1.
Data Types: double
Probability in percentage, returned as a 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.