Q4Principle of Electronic Communication
Question
2 marks
Q.4. List two advantages of Digital Modulation over Analog Modulation. [2]
Answer
- Digital modulation offers superior noise immunity, since a digital receiver only needs to distinguish between a finite number of discrete symbol levels rather than reconstruct an exact continuous waveform, making it far more tolerant of noise and interference than analog modulation.
- Digital modulation allows easy integration with error detection/correction coding, encryption, compression, and digital signal processing techniques, and supports efficient multiplexing of multiple data streams, advantages not readily available with analog modulation.