Does a Sinc Pulse in Time Domain Resist Intersymbol Interference?

[oufa]

please can anyone tell me urgently is the sinc pulse in time domain apulse which resist intersymbol interference or not ?
i know that sinc is infinite given in frequency domain but is the condition of no ISI satisfied which is
summation of shifted sincs by the bit rate value must be aconstant value
is this right or not ?

 

[mohammed.omar]

Hey oufa,

I believe you have got something wrong. A sinc in the time domain corresponds to a rectangular pulse in the frequency domain. So if you transmit a sinc pulse in time, into a channel whose bandwidth is larger than the rectangle in the frequency domain, there would be no ISI.

You can think of this as sending the pulses such that the peak of one pulse would reside at the zero of other pulses, causing no ISI, as you said.

Regards,
Mohammed Omar