Bandwidth Simulation

The Concept

Bandwidth is a fundamental concept in communication and signal processing. It refers to the range of frequencies contained within a signal or the capacity of a communication channel to transmit data. It's usually measured in Hertz (Hz) for analog signals or bits per second (bps) for digital data.

A wider bandwidth allows for the transmission of more information per unit of time. For example, a high-fidelity audio signal requires more bandwidth than a simple voice call because it contains a wider range of sound frequencies.

How to Use the Lab

• Adjust the Base Signal Frequency to simulate different information types (low for voice, high for music). Observe its position on the frequency response graph.
• Adjust the Noise Level to see how unwanted random signals affect the original signal.
• Change the Channel Bandwidth to understand how it limits frequencies. The purple area on the graph shows what passes.
• The top graph shows your Original Signal + Noise. The bottom graph shows the Received Signal after the channel's filtering effect.
• Pay attention to the Signal Quality meter: higher quality means more of your original signal and less noise gets through!