Which Line Code is having large bandwith
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Between RZ and NRZ encoding techniques, which requires higher bandwidth and why? Ans: RZ encoding requires more bandwidth, as it requires two signal changes to encode one bit. 4.
A line code is the code used for data transmission of a digital signal over a transmission line. This process of coding is chosen so as to avoid overlap and distortion of signal such as inter-symbol interference.
Properties of Line Coding
Following are the properties of line coding −
As the coding is done to make more bits transmit on a single signal, the bandwidth used is much reduced.
For a given bandwidth, the power is efficiently used.
The probability of error is much reduced.
Error detection is done and the bipolar too has a correction capability.
Power density is much favorable.
The timing content is adequate.
Long strings of 1s and 0s is avoided to maintain transparency.
Types of Line Coding
There are 3 types of Line Coding
Unipolar
Polar
Bi-polar
Unipolar Signaling
Unipolar signaling is also called as On-Off Keying or simply OOK.
The presence of pulse represents a 1 and the absence of pulse represents a 0.
There are two variations in Unipolar signaling.
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