Impulse Noise Estimation for Adaptive Modulation and Coding

In this paper, a new method for estimating accurately the parameters of impulse noise disturbing an adaptive square QAM (Quadrature Amplitude Modulation)is presented. In this new method the impulse noise estimation is performed directly on the constellation diagram of QAM symbols data. A particular interpolation on the histogram of Error Vector magnitude is accomplished to obtain impulse noise parameters. A correction factor is added to take into account the clipping induced on the impulse noise by the decision regions of the constellation diagram. This estimation method was applied by simulation on several impulse noises with different parameters. And the results point-out that this new method performs perfectly with many practical impulse noise parameters.