They are employed to reduce the intersymbol interference
and tolerate the recovery of the transmitted signal .
In general, a decision circuit amplifies attenuated input signal, and then determines digital value after adding the compensation to cancel intersymbol interference
to the amplified signal.
In SC-FDE systems, linear equalization is simple and practical, but it does not do well in noise and intersymbol interference
(ISI) suppression .
So, different number of FFT carriers should be selected in a way to minimize the expected interference (caused, for example, by the Doppler effect or multiple reflections in free space) and intersymbol interference
The basic principle of duobinary coder is adding an intersymbol interference
(ISI) to the transmitted signal in a controlled manner and compensating its effect at the receiver.
Tachyon and Tachyon-100G materials use spread glass and reduced profile VLP-2 copper (very low profile copper with 2 um Rz surface roughness copper foil) to mitigate PCB induced differential skew, improve signal rise times, and reduce jitter and intersymbol interference
Use one of three dual-Dirac models to measure and separate noise into total (Tn), random (Rn) and deterministic (Dn) components, and further decompose Dn into Intersymbol Interference
Noise (ISIn) and Periodic Noise (Pn).
More than ever, signal integrity issues due to crosstalk and channel effects such as intersymbol interference
lead to closed eyes and jitter.
The DWT system also displays minimal side-lobes which contribute to its immunity to intersymbol interference
This is the definition of intersymbol interference
and will contribute to collapse of the eye.
His topics include deterministic and random signal analysis, information theory and channel coding, modulation and demodulation, intersymbol interference
and equalization, and fading channels.
The performance of conventional CDMA systems  is limited by multiple access interference (MAI), as well as intersymbol interference