1. A method comprising performing by circuitry for use in a receiver, said circuitry comprising a decision feedback equalizer (DFE): determining values of tap coefficients used by the DFE based on: an error signal that is based on an equalizer output and an estimated inter-symbol-correlated (ISC) signal; and a set of error vector(s), where each error vector in the set represents a difference between estimated symbols generated in the receiver and expected symbols.