ISRO Electronics & Communication (ECE) 2025 - Question 23

All ISRO Electronics & Communication (ECE) papers | ISRO Electronics & Communication (ECE) 2025

Topic: Information Theory and Coding

Which of the following statements best describes the primary distinction between Shannon's Source Coding Theorem and Shannon's Channel Coding Theorem?

  • A. Source coding is only for lossless compression, while channel coding is only for lossy compression
  • B. Source coding applies only to discrete sources, whereas channel coding applies to continuous sources
  • C. Source coding deals with compressing data, while channel coding deals with transmitting data reliably over a noisy channel
  • D. Source coding aims to increase redundancy, while channel coding aims to remove redundancy

Answer: C. Source coding deals with compressing data, while channel coding deals with transmitting data reliably over a noisy channel

Explanation: Shannon's Source Coding Theorem establishes the theoretical limit for data compression (entropy), effectively aiming to remove redundancy. Shannon's Channel Coding Theorem establishes the theoretical limit for reliable communication over a noisy channel (channel capacity), which relies on adding controlled redundancy (error correction codes) to combat noise.

| | All questions of ISRO Electronics & Communication (ECE) 2025