Digital transmission has several advantages over Analog transmission:
1. Analog circuits require amplifiers, and each amplifier adds distortion and noise to the
signal.
2. In contrast, digital amplifier regenerate an exact signal, eliminating cumulative
errors.An incoming (analog) signal is sampled,
then generates a new signal from the bit value; the incoming signal is discarded.
3.)Voice, data, video, etc. can all by carried by digital circuits.
With analog circuits, intermediate nodes amplify the incomiing signal, noise and all.
4.)Digital Communication systems are cheaper to implement then analog.
5.)Digital signals can be coded to yield extremely low error rates and high fidelity as well as privacy.
6.)Easier and more efficient to multiplex several digital signals.such as speech,video and other digital data.
7.)Digital Communication is inherently more efficient than analog in realizing the exchange of signal to noise ration for Band width.
8.)In digital communications Hardware implementation is flexible with the use of microprocessors and large scale integrated circuits.
1. Analog circuits require amplifiers, and each amplifier adds distortion and noise to the
signal.
2. In contrast, digital amplifier regenerate an exact signal, eliminating cumulative
errors.An incoming (analog) signal is sampled,
then generates a new signal from the bit value; the incoming signal is discarded.
3.)Voice, data, video, etc. can all by carried by digital circuits.
With analog circuits, intermediate nodes amplify the incomiing signal, noise and all.
4.)Digital Communication systems are cheaper to implement then analog.
5.)Digital signals can be coded to yield extremely low error rates and high fidelity as well as privacy.
6.)Easier and more efficient to multiplex several digital signals.such as speech,video and other digital data.
7.)Digital Communication is inherently more efficient than analog in realizing the exchange of signal to noise ration for Band width.
8.)In digital communications Hardware implementation is flexible with the use of microprocessors and large scale integrated circuits.
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