Abstract
This article presents results on the pre-processing
(clipping/nulling) of impulse noise corrupted signal that is digitally
modulated. The novelty of the article is in performing the
clipping technique on the waveform of the digitally modulated
signal as opposed to working with the constellation of the
modulated signal. We present bit error rate performance results
of Frequency Shift Keying (FSK) modulation in the presence
of impulse noise and AWGN, when clipping is performed. We
furthermore, develop closed-form expressions for the bit error
rates of FSK modulation in the presence of both AWGN and
impulse noise, when clipping of the received signal has been
performed.