What is the Nyquist rate in communication systems?
Correct Answer: Nyquist rate is twice the maximum frequency of the signal.
- Step 1: Understand that signals can have different frequencies, which are how fast they change.
- Step 2: Know that when we want to capture or record a signal, we need to take samples of it.
- Step 3: Realize that if we don't take enough samples, we can get a distorted version of the signal, called aliasing.
- Step 4: Learn that the Nyquist rate is a rule that helps us avoid aliasing.
- Step 5: The Nyquist rate says we need to sample the signal at least twice as fast as the highest frequency in the signal.
- Step 6: If the highest frequency of the signal is 'f', then the Nyquist rate is '2f'.
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