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In which modulation does the signal convert its analog information into a binary sequence, i.e., in 1s and 0s 

In which modulation does the signal convert its analog information into a binary sequence, i.e., in 1s and 0s  Correct Answer Pulse code modulation 

Pulse code modulation is a technique to change an analog signal to digital data, i.e. in the form of 1's and 0's. A large bandwidth is required in PCM system.

A PCM encode contain three components:

1) The analog signal is sampled

2) The sampled signal is quantized

3) The quantized values are encoded as stream of bits

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Notes:

  • ASK, PSK and FSK are signaling schemes used to transmit binary sequences through free space. In these schemes, bit-by-bit transmission through free space occurs.
  • In PSK (phase shift keying) binary 1 is represented with a carrier signal and binary O is represented with 180° phase shift of a carrier.
  • In Frequency modulation, the frequency of the carrier is varied according to the amplitude of the message signal and the amplitude of the carrier remains constant.

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