COMPUTER NETWORKING

Detailed explanation-1: -Encoding. Encoding is the process of representing the sampled values as a binary number in the range 0 to n. The value of n is chosen as a power of 2, depending on the accuracy required. Increasing n reduces the step size between adjacent quantisation levels and hence reduces the quantisation noise.

Detailed explanation-2: -The components of a PCM system are a low pass filter, sampler, quantizer, encoder, communication channel, quantizer, decoder, and a reconstruction filter. The input message signal m(t) is the analog signal applied to the sampler. The combination of quantizer and encoder is known as ADC (Analog to Digital Converter).

Detailed explanation-3: -Pulse code modulation (PCM) is a system for converting message signals to a continuous serial stream of binary numbers (encoding). Recovering the message from the serial stream of binary numbers is called decoding. At its simplest, decoding involves: Identifying each new frame in the data stream.