W. Ser et al., A NEW METHOD FOR DETERMINING UNKNOWN WORST-CASE CHANNELS FOR MAXIMUM-LIKELIHOOD SEQUENCE ESTIMATION, IEEE transactions on communications, 46(2), 1998, pp. 164-168
We derive a series of upper and lower bounds for the minimum distance
between two noise-free output sequences over unknown channels with fix
ed-energy finite-duration impulse responses. Using these bounds, we de
velop a method for determining the minimum distance, Such distance is
crucial for determining the worst possible performance of maximum-like
lihood sequence estimation (MLSE).