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In: Electrical Engineering

Draw the waveform and eye diagram of BPSK and BFSK and from this diagram find the...

Draw the waveform and eye diagram of BPSK and BFSK and from this diagram find the bit spacing.

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Expert Solution

In digital communications, an eye diagram is used to visualize the effect of noise and signal distortion as a result of transmission over a channel. The eye diagram overlays a sequence of received pulses. The eye diagram plots the signal levels on the vertical axis versus the normalized time on the horizontal axis.

in a BPSK system there are four possible transition states: (i) from {+1} to {+1}, (ii) from {+1} to {-1}, (iii) from {-1} to {+1}, and (iv) from {-1} to {-1}.

A visualization of these transitions is:

Eye diagram of BPSK:

The opening in the middle is called “eye opening”, which measures the effect of additive noise on the signal. Namely, if there is more noise (or symbol interference), the opening will be narrower.

Eye Diagram of FSK:

Manojponduru answered 3 months ago
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