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pseudo ternary method

The pseudo-ternary method is a transmission method for baseband systems that works in exactly the same way as the bipolar method, in which the logical "1" is alternately assigned the transmission amplitude "+A" and "-A".

Pseudo-ternary method

Pseudo-ternary method

The pseudo-ternary code knows three signal states: positive level, no level and negative level. The difference to the bipolar method is that the square wave pulse becomes shorter than the step duration. This has the advantage that the decay of the step is decayed until the next pulse. In contrast, the zero level in the ternary method is fixed as a voltage potential. The ternary method knows the levels -1, 0 and +1.

The pseudo ternary method is used in ISDN. In the USA, the pseudoternary method has been replaced by the 2B1Q coding.

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Englisch: pseudo ternary method
Updated at: 10.09.2012
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