Analysis of Impulse Noise Mitigation Techniques for Digital Television Systems

are inherently more resistant to impulse noise than single carrier systems, impulse noise can still be a significant problem in many applications including digital television. A number of impulse noise mitigation algorithms are investigated. These use non linear processing on the digital input signals to limit the size of impulses reaching the demodulator. It is shown that when the noise at the input is highly impulsive, significant reduction in the signal to noise ratio can be achieved. The most effective non-linearity is clipping of input signal samples with large amplitudes.