Intersymbol Interference

1. What is meant by intersymbol interference?
2. What is intersymbol interference in digital communication?
3. What is ISI in eye diagram?
4. What is ISI in OFDM?

What is meant by intersymbol interference?

Intersymbol interference (ISI) is a phenomenon in which the energy of a symbol spills over into succeeding symbols causing interference. Tight filtering at the transmitter and receiver and/or channel distortion can cause the waveform that represents a symbol to spread out into succeeding symbol periods.

What is intersymbol interference in digital communication?

In telecommunication, intersymbol interference (ISI) is a form of distortion of a signal in which one symbol interferes with subsequent symbols. This is an unwanted phenomenon as the previous symbols have a similar effect as noise, thus making the communication less reliable.

What is ISI in eye diagram?

... inter-symbol interference (ISI) is determined as a function of a given timing offset. Performance may be depicted graphically in the form of the well- known eye diagram as illustrated in Fig. 2.2.

What is ISI in OFDM?

Abstract. An OFDM system is very sensitive to orthogonality relation. For a mobile wireless system, it is impossible to avoid Doppler-induced inter carrier interference (ICI). Moreover, while beyond guard interval delayed signal exists in channel, the delay-induced ICI and inter symbol interference (ISI) will occur.