Comments on 'Evaluating distance spectra and performance bounds of trellis codes on channels with intersymbol interference'

摘要

It is shown that the method presented by C. Schlegel (see ibid., vol.37, no.3, p.627-34, May 1991) for evaluating the distance spectra of trellis codes on channels with intersymbol interference is incorrect. A counterexample is presented along with comments on the feasibility of correcting the method.