Linjakoodaus

Linjakoodaus, also known as line coding, is a technique used in digital communication to represent binary data in a form suitable for transmission over a physical medium. It involves converting a binary data stream into a signal that can be transmitted and then decoded back into the original binary data at the receiving end. This process is crucial for ensuring reliable and efficient data transmission.

Line coding techniques address several challenges in digital communication, such as maintaining synchronization between the transmitter and receiver, minimizing errors, and ensuring that the transmitted signal can be accurately interpreted. Different line coding schemes are used depending on the specific requirements of the communication system, such as the type of medium, the data rate, and the need for error detection and correction.

Some common line coding schemes include Non-Return-to-Zero (NRZ), Manchester, and Differential Manchester. NRZ is a simple scheme where a binary '1' is represented by one signal level and a binary '0' by another. Manchester coding, on the other hand, uses transitions in the signal to represent binary data, which helps in maintaining synchronization. Differential Manchester coding is a variation of Manchester coding that uses the presence or absence of a transition in the middle of the bit period to represent binary data.

Line coding is an essential aspect of digital communication systems, enabling the reliable and efficient transmission of data over various physical media. By converting binary data into a suitable signal format, line coding ensures that the transmitted data can be accurately interpreted and utilized by the receiving end.