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