intersymbolinterference
Intersymbol interference, often abbreviated as ISI, is a phenomenon that occurs in signal transmission when one symbol interferes with a subsequent symbol. This interference can degrade the quality of the received signal, making it difficult for the receiver to correctly interpret the transmitted information. ISI arises because communication channels are not perfect and exhibit characteristics that cause a transmitted pulse to spread out in time. This spreading means that the energy from one symbol can persist and overlap with the time interval allocated to the next symbol.
Several factors contribute to ISI. The most significant is the limited bandwidth of the communication channel.
The consequences of ISI can be severe, particularly in digital communication systems. If ISI is significant,