In digital communication systems experiencing dispersion or using certain equalization techniques, a symbol's energy can spread forward in time. This forward spread causes interference with the preceding symbol, creating intersymbol interference. Engineers design specific filters to minimize this effect and maintain clear decision boundaries for the receiver.
Heard on the job
The eye diagram shows significant precursor interference, which means we need to adjust the feed-forward equalizer taps.
Also heard as
- pre-cursor ISI