Waveform shaping device, equalizer, receiving system, method of controlling waveform shaping device, control program, and computer-readable medium in which control program is recorded

摘要

A waveform shaping device shapes a waveform of an externally input signal and outputs the input signal with the shaped waveform as an output signal to an equalizer for compensating a distortion of a signal, and includes a nonlinear process section for generating a nonlinear process signal (i) in which positive and negative signs of a low-frequency-free signal obtained by removing at least a direct current component from frequency components of the externally input signal are retained and (ii) which broadly monotonically increases nonlinearly with respect to the low-frequency-free signal when values of the low-frequency-free signal are at least in the vicinity of 0, the nonlinear process signal being added to the low-frequency-free signal so as to generate the input signal.