1. A signal processing method comprising: receiving, at a signal processing system, a signal of interest; calculating, using the signal processing system, a power spectral density shape for the signal of interest; calculating, using the signal processing system and after said calculating the power spectral density shape, a basis vector based on the power spectral density shape; performing, using the signal processing system and after said calculating the basis vector, a linear regression using the basis vector to generate at least one estimate for at least one parameter of the signal of interest; and transmitting, after said performing the linear regression and based on the at least one generated estimate, a signal that avoids interference with the signal of interest.