Signals transmission by invariant method with the subsequent non-linear processing

The invariant system of the information processing based on square-law characterized non-linear processing has been synthesized. Calculating the parameters of such kind system it is assumed that the readings of the sub-carrier are interfered with the additive noise and non-correlated with each other. The quantitative estimation of the operation of such kind system is compared with the quantitative indicators of the classical system with the amplitude modulation and with the characteristics of the invariant system based on extended synchronous detection.