Transmission of signals by invariant method with further non-linear processing by weak correlation

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