Eye Diagram for PCM M - ary

This repo contain a Eye Diagram of a PCM M-ary, with a Raised Cosine Filter, Noise's Effect and Band Width Restrictions.

For M = 2, we have a Binary Comunication System, but for more symbols, we need M > 2.

Raised Cosine Filter

For α (Roll-off) in [0 , 0.5 , 0.75 ,1] your perfomance is:

Eye Diagram For M = 2 without Noise

With a Digital System without Noise, The ideal eye diagram don't have ISI and your perfomance will be clear.

Eye Diagram For M = 2 with Noise

Eye Diagram For M = 2 with Noise and LowPass Filter fc=0.975

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Eye Diagram For M = 4 without Noise

Eye Diagram For M = 4 with Noise

Eye Diagram For M = 4 with Noise and LowPass Filter fc=0.975