Non-reference metrics and its application for distortion compensation

This article summarizes the SNR estimation methods and suggests a relatively simple SNR method for estimating blind signals for QAM and PSK modulation signals. The proposed modification of this method allowed to accurately estimate the BER or SER with a transaction of a relatively small number of symbols and a minimal error without any reference sequences. A practical application of this method is also provided - compensation of the BPSK signal offset using AWGN in the channel.