Probability Distributions for Noise Plus Several Sine Waves - The Problem of Computation
Stephen A. Rice · IEEE Transactions on Communications · 1974
The problem of computing the distributions of the envelope and instantaneous value of the sum of several sine waves plus Gaussian noise is reviewed. It is pointed out that the associated integrals can be efficiently evaluated by the trapezoidal rule except when the noise is small. Approximations which hold when the noise is small are given.