intersymbol interference (ISI) is a form of distortion of a signal in which one symbol interferes with subsequent symbols
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There are two processes:-
1 Bandlimited channel
2 Multipath propogation
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MAI cause a significant problem when the power level of the
desired signal is higher than that of the interfering signal.
Multiuser detection(MUD) uses the information present in the MAI to
decode the signal.
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Interference.
Constructive Interference, which is where the waves increase
amplitudes and troughs when they overlap.
Destructive Interference, which is where the waves cancel each
other out when they overlap.