How to Avoid ISI in Digital Communications: Nyquist Zero ISI Theorem

Explains how the Nyquist Zero ISI Theorem gives the maximum rate for sending binary digital communication data while avoiding Inter Symbol Interference. This is different to the more well-known Nyquist Sampling Theorem. It also shows that the highest data rate is achieved when the impulse response of the overall channel is a sinc function.
Related Videos: (see iaincollings.com)
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[@dextermorgan2360]

I have recently found your channel and I like your practical ways of explaining concepts. Very useful for Communication engineering students.

[@iain_explains]

Thanks for your comment. I'm glad you're finding the videos to be useful.

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[@iain_explains]

That's great to hear. I'm so glad I've been helping!

[@irrationalpie3143]

Haha.

[@edmundkemper1625]

The exact video i was looking for. I previously saw your 2 videos (pulse shaping and What is ISI). But i was suprised, why Nyquist's ISI criterion works, and there you are thanks a lot Professor

[@iain_explains]

Glad it was helpful!

[@marcofe82]

I did my course of electrical communication some times ago, but a good revise is always the right choice! Thank you so much and really good video!

[@iain_explains]

That's great to hear. I'm glad you like the video.

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[@iain_explains]

I'm so glad you're finding the videos helpful. It's always great to hear from people who like the way I've explained things.

[@pz472]

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[@iain_explains]

Thanks for your nice comment. I'm glad it was helpful!

[@katieburrows3033]

Your videos are helping me so much as I prepare for my final. Thank you!

[@iain_explains]

I"m so glad you're finding the videos helpful.

[@BassemBarakat]

Very clear video ! Thank you sir

[@iain_explains]

Glad it was helpful!

[@abdelrahmanzahran9697]

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[@iain_explains]

I'm glad the video helped.

[@arjunsnair4986]

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[@iain_explains]

You're welcome.

[@oliviaegbert421]

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[@iain_explains]

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[@xiaofengcheng6692]

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[@iain_explains]

You're welcome!

[@pitmaler4439]

Is there any definition of "interference"? It refers to transmission in the same frequency that aren't for the receiver. But what is with slightly different frequencies? Is that interference too? It is a more general question. Thanks a lot .

[@iain_explains]

Signals that are out of the frequency band of your receiver will be suppressed by your receiver front-end filter, so they will not interfere - unless your filter is not very good.

[@lutzvonwangenheim9682]

at 5:40 you have talked about in future compression i.e end to end delay what is that about is there any video available on your channel , can you give some insigts of this concept

[@iain_explains]

This is the same as in pulse shaping, where the energy from each data symbol is spread out over multiple symbol time slots (in order to constrain the bandwidth), and at the receiver, all of that energy needs to be collected at a single decision-time in order to make a digital detection of that symbol. This video gives more details on pulse shaping: "Pulse Shaping and Square Root Raised Cosine" kzbin.info/www/bejne/h5abf4Suac6Ve5o