Estimation of parameters of signal mixture with noise based on monitoring outputs of the multichannel device of orthogonal signals distinction at coherent reception

Mathematical expressions for optimal and quasi-optimal estimations of signal/noise relation and spectral density of noise capacity, based on monitoring outputs of the coherent multichannel device of distinction of orthogonal signals have been received. It was found that, by means of processing outputs of channels in multichannel devices of distinction of orthogonal signals, one can make almost implementable quasi-optimal estimations of signal/noise relation or noise parameters with rather high accuracy.