Application Engineer- Prototyping at Siemens India

Digital communication

1. advantages of digital signal

• The effect of distortion, noise, and interference is much less in digital signals as they are less affected.
• Digital circuits are more reliable.
• Digital circuits are easy to design and cheaper than analog circuits.
• The hardware implementation in digital circuits is more flexible than analog.
• The occurrence of cross-talk is very rare in digital communication.
• The signal is un-altered as the pulse needs a high disturbance to alter its properties, which is very difficult.
• Signal processing functions such as encryption and compression are employed in digital circuits to maintain the secrecy of the information.
• The probability of error occurrence is reduced by employing error detecting and error correcting codes.
• Spread spectrum technique is used to avoid signal jamming.
• Combining digital signals using Time Division Multiplexing (TDM) is easier than combining analog signals using Frequency Division Multiplexing (FDM).
• The configuring process of digital signals is easier than analog signals.
• Digital signals can be saved and retrieved more conveniently than analog signals.
• Many of the digital circuits have almost common encoding techniques and hence similar devices can be used for a number of purposes.
• The capacity of the channel is effectively utilized by digital signals.