PHYSICAL LAYER AND TRANSMISSION MEDIA
DIGITAL TRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Scrambling
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Sampling
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Quantization
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Encoding
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Detailed explanation-1: -PCM consists of three steps which are sampling, quantization and coding. As seen in the above image an input analog signal which is in the form of a sine wave is converted into a digital signal with discrete values.
Detailed explanation-2: -PCM is a technique by which an analog signal gets converted into digital form to have signal transmission through a digital network. The major steps involved in PCM is sampling, quantizing, and encoding.
Detailed explanation-3: -PCM system. A communication system contains a transmitter, channel, and receiver. A transmitter and a receiver have various components depending on the input signal and the output requirements. It performs two functions, modulation and demodulation.