Question

What is digital modulation and its types?

Answer 1

Hint: Here, we are asked to explain what digital modulation is and also give different types of digital modulation. One could recall what this digital modulation is and hence give a brief note on the same. Mention some points on it and also give the basis of classification and also name the different types.

Complete answer:
Digital modulation, DM in short, is a common term that is used for indicating the techniques of modulation. Digital modulation makes use of discrete signals so as to modulate a carrier wave. Amplitude modulation and frequency modulation techniques are analogs to this. The digital modulation has the capability to remove communication noise and by doing so, it provides enhanced strength for the signal intrusion. Introducing a time delay because of the required process is not rare for these digital modulation schemes. Comfort secure stream technology audio is designed to avoid this.
It is a known fact that digital modulation techniques are available in several kinds and this classification is based on the requirement. The different types of DM are:
(1) Amplitude shift key (ASK)
(2) Frequency shift key (FSK)
(3) Phase shift key (PSK)

Note: One should be aware of the fact that digital modulation gives more capacity of data along with high information security as well as the accessibility of much faster by virtue of enormous quality communication. Due to this very reason, DM techniques are in huge demand. Also, their capacity for communicating superior amounts of information is higher than AM techniques.