Noise in Communication and Its Types | New Topic [2024]

In this note, we are going to learn about Noise in Communication and Its Types. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.

Author Name: Arun Paul.

What is Noise in Communication?

In communication engineering, โ€œNoiseโ€ is defined as any undesirable or random disruption that disrupts signal transmission and reception. Noise can reduce signal quality, causing inaccuracies in the information being sent.

Types of Noise in Communication
  1. Thermal Noise: Caused by the random migration of electrons in a conductor due to thermal agitation.
  2. Shot Noise: Caused by the discontinuous character of electric charge (for example, electrons) as it crosses junctions in electronic circuits.
  3. Intermodulation Noise: It results from the nonlinear mixing of signals in a circuit or device.
  4. Crosstalk: This happens when a signal from one channel or circuit mistakenly interferes with a signal in another channel.
  5. Impulse Noise: Lightning, switching transients, and electrical failures are all examples of sudden, short-duration disruptions.
  6. Phase Noise: Associated with signal phase changes, which are frequently caused by oscillator or other component instabilities.
  7. Quantization Noise: Originates from the process of transforming an analog signal to a digital signal.
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