Method for estimating the variance of the noise of symbols in a radio signal

摘要

A method is provided for estimating the variance of the noise of symbols in a radio signal when noise may appear impulsive samples between samples of Gaussian noise.The method includes the steps of adding samples of input and reference samples are consistent to produce samples of error, computing the squares of the samples of error.Separate samples of Gaussian noise and impulse noise samples square square.And nonlinear filtering of squares of samples of error to produce an estimate of the variance of the noise representing the sum of variance of Gaussian noise long-term average.And the variance of impulsive noise in short term.