Tele-Communication (Telecom) Terms Glossary and Dictionary
Intersymbol interference refers to following definitions: (1) Destortion of the received signal in a digital transmission system which distortion is manifested in the temporal spreading and consequent overlap of individual pulses to the degree that the receiver can not reliably distinguish between changes of state (i.e. between individual signal elements). (2) Extraneous energy from the signal in one or more keying intervals that interferes with the reception of the signal in another keying interval. (3) The disturbance caused by extraneous energy from the signal in one or more keying interval that interferes with the reception of the signal in another keying interval.