A digital signal processing system operates at a sampling ra

A digital signal processing system operates at a sampling rate of 10,000 samples/s Determine the theoretical highest frequency permitted in a baseband signal if a guard band of 4 kHz is to be established between the upper range of the baseband signal and the lower range of the first translated component.

Solution

digital signal processing system operates at a sampling rate of 10,000 samples/s . So according to Nyquist Criteria fs=2fm. That means hightest theoretical frequency in baseband signal should be 5,000 samples/s. But since there is a guard band of 4KHz so theoretical highest frequency permitted in a baseband signal is 1,000 samples /s.