What is line coding ? Give some examples of line codes and explain in brief.

What is line coding ? Give some examples of line codes and explain in brief.

 

Ans. Digital line encoding involves converting standard logic levels to a

form more suitable to telephone line transmission. Essentially six primary factors

must be considered when selecting a line-encoding format. They are –

transmission voltages and DC component, duty cycle, bandwidth considerations,

clock and framing bit recovery, error detection, ease of detection and decoding.

There are several lines codes that can· be used for the electrical

representation of binary symbols I and 0 as described in line coding.

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